CN101827995A

CN101827995A - System and method for controlling a drilling system for drilling a borehole in an earth formation

Info

Publication number: CN101827995A
Application number: CN200880111782A
Authority: CN
Inventors: 阿什利·约翰逊; 沃特·阿尔德雷德; 杰弗里·唐顿; 赖得·布阿勒格; 科扎尔·豪格沃尔德斯泰德; 迈克尔·谢帕德
Original assignee: Prad Research and Development Ltd
Current assignee: Prad Research and Development Ltd
Priority date: 2007-08-15
Filing date: 2008-08-12
Publication date: 2010-09-08
Anticipated expiration: 2028-08-12
Also published as: CA2694868A1; CA2694857A1; MX341532B; MX2010001816A; EA201070265A1; MX340647B; EA017791B1; MX2010001817A; WO2009022128A1; EA201070267A1; CN101827994A; CN101778992A; WO2009022114A1; EP2188484A1; EA018610B1; CN101784746A; CN101784746B; EA201070263A1; EP2176494A1; CN103774990A

Abstract

A method for using dynamic motion of a drilling system in a borehole being drilled or cored in an earth formation by the drilling system, the drilling system comprising a drill bit and a drill-string, to control the drilling system, comprising: controlling dynamic interactions between a section of the drilling system and an inner surface of said borehole; and using the controlled dynamic interactions between the section of the drilling system and the inner surface of said borehole to control the drilling system and using a drill collar or gauge pad non-concentrically coupled with the drilling system to dynamically interact with the inner surface.

Description

Be used for being controlled at the system and method for the well system of earth formation drilling well eye usefulness

Technical field

The disclosure relates in general to a kind of method and system that is used for being controlled at the well system of earth formation drilling well eye usefulness.More specifically, but not in restrictive mode, in one embodiment of the invention, thus provide the interaction between a kind of inner surface of the well that is used to control the well system of drilling well eye usefulness and is being crept into by described well system the well orientation to be drilled through the system and method for earth formation so that well system is led.In aspect more of the present invention, well system can be controlled so that well arrives the target area target.

In another embodiment of the present invention, can sensing about the well system drilling well data of the function of described well system at the moment, and can be used for interaction between the inner surface of the well system of drilling well eye and well in response to the control of institute sensed data, to be used to control the operation of well system.In certain aspects, can control interaction between well system and the inner surface to be used to control the interaction of drill bit and earth formation.

Background technology

In many industries, usually expectation is by coring in earth formation directional drilling a bite well or the well in subsurface formations, so that well and/or core can be surrounded and/or by deposit and/or reservoir in the stratum, with the predeterminated target in arrival stratum and/or the similar stratum.When drilling well in subsurface formations or when coring, expectation sometimes can change and control drilling direction, with for example towards the target center guiding well of expectation, in case perhaps arrived target center then level is controlled at the interior direction in zone that contains oil gas.Also expectation is can proofread and correct the hole deviation that departs from desired orientation when drilling straight-hole, and perhaps the direction of control well is to avoid obstruction.

For example, in gas industries, can carry out drilling well with the concrete subsurface formations of intercepting particular locations.In some drilling process, in order to bore the well of expectation, can design wellbore trace in advance, and can control well system with consistent with track by earth formation.In other process, perhaps with the combining of aforementioned process in, during drilling process, can be identified for the target of well and can monitor the process of just in earth formation, creeping into well, and can adopt and be used to guarantee that well arrives the step of target area target.In addition, the operation that can control well system is to provide economic drilling well, described economic drilling well can comprise creeps into to drill through earth formation as early as possible, creeps into to reduce bit wear, creeps into to obtain best drilling well and optimal drill bit wearing and tearing and/or the similar results by earth formation.

An aspect of drilling well is known as " directed drilling ".Directed drilling is to have a mind to make well to depart from the path that described well itself is passed through.In other words, directed drilling is that drill string is led, and makes described drill string move along the direction of expectation.

Because directed drilling can bore many mouthfuls of wells from single platform, so the advantage of directed drilling is offshore drilling.Directed drilling can also carry out horizontal drilling by reservoir.Horizontal drilling can make longer pit shaft pass reservoir, and this has increased the productivity ratio of well.

The directed drilling system equally also can be used for the vertical drilling operation.Usually, drill bit is owing to being left the wellbore trace that designs by the uncertain characteristic on the stratum passed or the variation power that drill bit is subjected to.When this hole deviation took place, the directed drilling system can be used for drill bit is put back to the track of stipulating.

The observation process that is used for the directional drilling of well can comprise determines the position of drill bit in earth formation, determine the orientation of drill bit in earth formation, determine the pressure of the drill of well system, determine bit speed by earth formation, the characteristic of definite earth formation that is being crept into, determine the characteristic on the stratum of encirclement drill bit, the characteristic on the stratum of drill bit front is determined in expectation, earth formation is carried out earthquake analysis, the characteristic of the reservoir of definite contiguous drill bit etc., the pressure on the stratum around measuring well intraocular and/or well or the similar item, temperature and/or similar parameters.In arbitrary process of the directional drilling that is used for well, no matter whether after the track of design in advance, whether monitor drilling process and/or drilling condition and/or similar operations, must be able to lead to well system.

Comprise gravity in the power on the drill bit of acting on during the drill-well operation, the moment of torsion that produces by drill bit, the end load that is applied to drill bit and from the moment of flexure of drill string assembly.These power can produce the power system of complex interactions with the stratigraphic type that is being crept into and stratum during drilling process with respect to the inclination angle of well.

Well system can comprise " rotary drilling " system, in described rotary drilling system, comprises that the Bottom Hole Assembly (BHA) of drill bit is connected to the drill string that can be driven from offshore boring island/rotate.In the rotary drilling system, can be by changing the directed drilling that well is provided such as factors such as the pressure of the drill, rotary speeies.

With respect to rotary drilling, the directed drilling known method comprises the rotary drilling system (RSS) that uses.In RSS, drill string rotates from ground, and downhole hardware makes drill bit creep into along the direction of expectation.Rotary drill column has significantly reduced the generation of the unsettled or bit freezing of drill string during the drilling well.

The rotary steerable drilling system that is used for inclined shaft is crept in the earth can rough classification be " towards drill bit " system or " propelling drill bit " system.In bit system, the rotation of drill bit is along the local axis of the roughly deviation in driction Bottom Hole Assembly (BHA) (" BHA ") of new well.According to the routine three point geometry size expansion wells that limit by up and down stabilizer contact point and drill bit.The angle of deviation of the drill axis that is associated with limited distance between drill bit and the following stabilizer produces the crooked required non-colinear condition that will generate.There are many methods can realize this, are included in the Bottom Hole Assembly (BHA) deflection near the stationary curved at the some place of stabilizer down or the bit drive shaft that between last stabilizer and following stabilizer, distributes.

Can comprise towards drill bit and to use the down-hole motor rotary drilling-head, and motor and drill bit are installed on the drill string that comprises the elbow with angle.In this system, drill bit can be connected to motor by mounted model or leaning device/joint, bent sub or similar means, and wherein, drill bit can tilt with respect to motor.When needs change drilling direction, drill string is stopped the rotation, and drill bit can be positioned at the down-hole along the direction of expectation, thereby use down-hole motor, and the rotation of drill bit can make the beginning of creeping into along the direction of expectation.In this layout, drilling direction depends on the angular displacement of drill string.

In the ideal form of drill bit, in bit system, because drill axis is rotated continuously along the direction of crooked hole, therefore, drill bit does not need to carry out the side direction drilling.U.S. Patent application publication No.2002/0011359; 2001/0052428 and U.S. Patent No. 6,394,193; 6,364,034; 6,244,361; 6,158,529; 6,092,610; With 5,113, illustrated towards the example of drill bit type rotary steering system and describedly how to have operated that all these applications are incorporated at this by reference in 953 towards drill bit type rotary steering system.

Advance bit system and method to be applied on the borehole wall power with crooked drill string and/or force drill bit on preferred direction, creeping into.In advancing drill bit rotary steering system, realize required non-colinear condition applying power or produce displacement on by the direction of preferred orientation with respect to the direction of well expansion by making mechanism.There are many methods can realize this, comprise that the guide direction based on method of not rotating (with respect to well) displacement and edge expectation is applied to power the eccentric actuator of drill bit.In addition, realize guiding by between drill bit and two other contact points, producing non-colinear at least.In the ideal form of drill bit, drill bit need carry out the side direction drilling to generate crooked hole.U.S. Patent No. 5,265,682; 5,553,678; 5,803,185; 6,089,332; 5,695,015; 5,685,379; 5,706,905; 5,553,679; 5,673,763; 5,520,255; 5,603,385; 5,582,259; 5,778,992; Illustrated in 5,971,085 how the example that advances drill bit type rotary steering system and described propelling drill bit type rotary steering system operate, and these applications incorporate at this by reference.

The known forms of RSS is provided with " reverse rotation " mechanism of rotating on the direction opposite with drill string rotating.Usually, counter-rotate under the speed identical and take place, make the reverse rotation part keep identical position, angle with respect to the inside of well with drill string rotating.Because the reverse rotation part is not rotated with respect to well, therefore be referred to as by those skilled in the art usually " static over the ground ".In this is open, as broad as long between term " reverse rotation " and " static over the ground ".

Advance bit system to use in the inside or the outside of reverse rotation stabilizer usually.The reverse rotation stabilizer is maintained fixed angle (or static over the ground) with respect to the borehole wall.In the time will making well deflection, actuator is pressed against thrust block pad (pad: perhaps be stretchable sheet) on the borehole wall in the opposite direction from the hole deviation of expectation.The result who produces is that drill bit is pushed on the direction of expectation.

But the power that the power balance by being used for the curved bottom drilling assembly is generated by actuator/thrust block pad, and described power is by the opposite side of actuator/thrust block pad reaction in Bottom Hole Assembly (BHA), and reaction force acts is on the gear wheel of drill bit, thereby well is led.In some cases, can be from the power of thrust block pad/actuator enough greatly to denude the stratum of application system.

For example, Schlurnberger Powerdrive system drilling rod uses three thrust block pads, described three thrust block pads arrange around the cross section of Bottom Hole Assembly (BHA) being disposed synchronously from Bottom Hole Assembly (BHA), thereby promote drill bit and to just leading in the drilled well of advancing along a direction.In described system, thrust block pad is close installation in the scope of drill bit back 1-4ft, and gives described thrust block pad power supply or activate described thrust block pad by the slurry flows of getting from circulation of fluid.In other systems, the pressure of the drill that is provided by well system or wedge or similar item can be used for well system is oriented in well.

Though be used for being applied to power on the borehole wall and use reaction force to promote drill bit or drill bit is moved with the system and method along the direction drilling well of expecting and can use with the well system that comprises the rotary drilling system along a direction, described system and method may have defective.For example, this system and method may need bigger power is applied on the borehole wall and is oriented in the well with crooked drill string or with drill bit; This power may be approximately 5kN or bigger, and 5kN or bigger power may need big/complicated down-hole motor or similar item to generate.In addition, many system and methods can be reused thrust block pad/actuator when Bottom Hole Assembly (BHA) is rotated and outwards be pushed into thrust in the borehole wall to produce the reaction force that promotes drill bit, and this may need the synchro system of complexity/costliness/high maintenance, complicated control system and/or similar system.

Summary of the invention

The disclosure relate in general to a kind of be used to control be configured for creeping into well or the method and system of well system that described well is cored by subsurface formations.More specifically, but not in restrictive mode, embodiments of the invention are used to use between the inner surface of DRILLING NOISE ON (that is, in the unsteady motion of well system during the drilling process in well) and well system and well interaction that the unsteady motion by well system produces with control well system and/or drilling process.

Therefore, embodiments of the invention are used to be controlled at the interaction of the repetition between the inner surface of well system and well during the drilling process, and use repeating the operation/function of interactional control with the control well system between well system and the inner surface.In certain embodiments, can control repeating between the inner surface of the part of well system or a plurality of part and well and interact, well system be led being used for, thus the directed drilling eye.In other embodiments, can control repeating between the inner surface of the part of well system or a plurality of part and well and interact,, for example control the operation of drill bit during drilling process to be used to control the operation of well system.

Therefore, in one embodiment of the invention, provide a kind of being used for to said method comprising the steps of to being configured for the method for the well system of drilling well eye in earth formation:

Dynamic interaction between the part of control well system and the inner surface of described well; And

Controlled dynamic interaction is with the control well system between the described part of use well system and the inner surface of well.

In certain aspects, the step of the dynamic interaction between the inner surface of the part of described control well system and described well comprises: it is heterogeneous making the described part of well system and the described dynamic interaction between the inner surface.In addition, the step of the dynamic interaction between the inner surface of the part of described control well system and described well can comprise: the described part of well system and the dynamic interaction between the inner surface are along the circumferential direction changed around the described part of well system.

In the rotary drilling system, the described part that being used to of well system controlled dynamic interaction can keep static over the ground in well in the operating period of well system.In certain embodiments, can control dynamic interaction leads to well system being used for.In other embodiments, can control dynamic interaction to be used to control drill bit.

In some embodiments of the invention, dynamic interaction between the inner surface of at least a portion and the described well of control well system can may further comprise the steps: is connected contact element and well system, and the use contact element is to control dynamic interaction.In the rotary drilling system, it is static over the ground in well to keep in touch element in the operating period of well system.

In aspect more of the present invention, contact element is configured to produce non-homogeneous dynamic interaction with inner surface.In these areas, the shape of contact element can be asymmetric, can be constructed with non-homogeneous flexibility, can comprise and the eccentric cylinder that is connected of Bottom Hole Assembly (BHA), can comprise element and/or like with non-homogeneous distribution of weight.

In certain aspects, contact element can comprise extended element, and described extended element can stretch out and/or stretch out to contact with described inner surface from described well system towards inner surface from well system.Extended element can be used for power is applied to inner surface with the control dynamic interaction.The power that is applied to inner surface can be less than 1kN.

In certain aspects, contact element can be connected with well system so that contact element is arranged in the drilling profile of drill bit.In others, contact element can be connected with well system so that at least a portion of contact element is arranged on outside the cutting profile of drill bit.

In aspect more of the present invention, driver can be used to change/control the dynamic interaction of well system during drilling process.In aspect more of the present invention, processor can be used to handle the system that is used to control the dynamic interaction between well system and the inner surface.The system that manipulation is used to control the dynamic interaction between well system and the inner surface can may further comprise the steps: be positioned at described system on the well system and/or described system is moved on well system.In certain aspects, manipulation processor can from sensor receive the position component of the position of data, well system of the parts of the operation of data about drilling process, well system and/or well system and/or well system data, the target of well in earth formation the position data, in the well condition data, at the just data of the characteristic of the dynamic motion of the different piece of the data of the characteristic of a plurality of parts of earth formation and/or earth formation, well system and/or well system and/or class likelihood data drilling process.

In aspect more of the present invention, can provide control by changing by the profile of the inwall of the well of drilling well to the dynamic interaction between the inner surface of the well system and the well of being crept into.In certain aspects, the device that can control the extended element, electric pulse drill bit, injection apparatus and/or the similar device that extend to inwall such as asymmetric drill bit, secondary drill bit, from well system is so that inwall has non-homogeneous profile, thereby is used to control the dynamic interaction between well system and the inwall.

In an embodiment of the present invention, can control the system and method for the dynamic interaction between the inner surface of the well that is used to control well system and is being crept in real time, so that the real-time control to well system to be provided.Can be by theoretical, experiment, structure by determining the dynamic interaction controller to the simulation of dynamic interaction, from the experience and/or the similar approach of previous drilling process.In certain aspects, the dynamic interaction controller can comprise and being positioned such that apart from the contact element of drill bit less than 10 feet, the contact element in the profile of creeping into that is provided with at drill bit can be comprised, the contact element that extends the external surface of millimeter magnitude outside the profile at least in part that creeps into that is provided with at drill bit can be comprised less than several millimeters external surface.

Description of drawings

In the accompanying drawings, similarly parts and/or feature can have identical Reference numeral.In addition, the various parts of same type can be distinguished by dash line after Reference numeral and second mark of distinguishing in like.As long as in manual, use first Reference numeral, then no matter second Reference numeral illustrates any that is applicable in the like with first identical Reference numeral.

Followingly understand the present invention better according to following non-limitative illustration and exemplary embodiment with reference to accompanying drawing, wherein:

Fig. 1 is the schematic diagram that is used for the system of drilling well eye;

Fig. 2 A is according to an embodiment of the invention, is used for the schematic diagram of the system that the well system to drilling well eye usefulness leads;

Fig. 2 B be according to an embodiment of the invention, by the cross-sectional view that flexiblesystem that system that the well system to drilling well eye usefulness leads uses intercepts that is used at Fig. 2 A;

Fig. 3 A-3C is according to an embodiment of the invention, is used for the schematic diagram of cam control system that well system is led;

Fig. 4 A-4C is according to an embodiment of the invention, is used for the schematic diagram of active gauge stretchable sheet (active gauge pad) that the well system that is configured for the drilling well eye is led;

Fig. 5 provides according to an embodiment of the invention, be used for the schematic diagram of the vibration application system that the well system to directed drilling leads;

Thereby Fig. 6 A and Fig. 6 B show according to an embodiment of the invention, be used for optionally characterizing the inner surface of well so that to the lead system of directed drilling of drilling assembly;

Fig. 7 A is according to an embodiment of the invention, is used for well system is led with the indicative flowchart of the method for directed drilling; And

Fig. 7 B is according to an embodiment of the invention, is used for being controlled at the indicative flowchart of the method for the well system that the earth formation drilling well uses.

The specific embodiment

Explanation subsequently only provides exemplary embodiment, and purpose is not restriction protection domain of the present disclosure, applicability or a structure.On the contrary, the explanation subsequently of exemplary embodiment will be provided for implementing the explanation of one or more exemplary embodiments for those skilled in the art.Do not deviate from as described in the appended claims spirit and the situation of protection domain under can make various changes to the function and the layout of the element of manual.

Below provided detail so that fully understanding embodiment to be provided in the explanation.Yet should be understood that not to have implementing described embodiment under the situation of these details.For example, system, structure and other parts can be shown as the parts of the form of block diagram, thereby can not make embodiment unclear with unnecessary details.In other cases, simply mode illustrates known process, technology and other method, in order to avoid make embodiment unclear.

In addition, be noted that single embodiment can be described as the process of flow chart, flowchart illustrations, structure chart or block diagram.Though flow chart can illustrate the operation as continuous process, can walk abreast or carry out a plurality of operations simultaneously.In addition, can rearrange the order of operation.In addition, any or a plurality of operation can not take place in certain embodiments.When the operation of process is finished, finish described process, but can have the other step that does not comprise in the accompanying drawings.Process can be corresponding with method, program etc.

The disclosure relates in general to a kind of method and system that is used for being controlled at the well system that the earth formation drilling well uses.More specifically, rather than in restrictive mode, embodiments of the invention are used to use the noise (in the instability/transient motion of well system during the drilling process in well) of the drilling process of not being familiar with so far and not being studied and the interaction that the unstable transient motion by well system between well system and the well produces, with control well system and/or drilling process.

In one embodiment of the invention, described system and method be used to control between the inner surface of well system that drilling well uses and the well of being crept into, because the interaction that the unstable transient motion of well system produces during drilling process, well system is led being used for, thereby the well orientation is drilled through earth formation.In aspect more of the present invention, can control well system and make well arrive the target area target or drill through described target area target.In another embodiment of the present invention, can sensing about the data of the function of well system, and ought be just at the moment in drilling well, can in response to institute's sensed data control between the inner surface of the well system of drilling well eye usefulness and well interaction (promptly, interaction between drill bit and earth formation or the like), with the control well system.

Fig. 1 is the schematic diagram that is used for the system of drilling well eye.As shown in the figure, drill string 10 can comprise connector system 12 and Bottom Hole Assembly (BHA) 17, and drill string 10 can be arranged in the well 27.Bottom Hole Assembly (BHA) 17 can comprise drill bit 20 and various other parts (not shown), for example, bit sub, MTR, stabilizer, drill collar, stem, jarring device (" bumper jar "), be used for the conversion joint and/or the like of various screw thread forms.Bottom Hole Assembly (BHA) 17 can provide power with fractured rock for drill bit 20, and wherein said power can provide by the pressure of the drill or similar item-and the Bottom Hole Assembly (BHA) 17 abominable mechanical environment that can be configured to bear high temperature, high pressure and/or corrosive chemicals.Bottom Hole Assembly (BHA) 17 can comprise MTR, directed drilling and measureing equipment, steering tool, logging while drilling apparatus and/or other isolated plant.

Drill collar can comprise the parts that the pressure of the drill can be provided for drilling well of drill string.Therefore, drill collar can comprise the heavy tubular part of heavy wall, and the heavy tubular part of described heavy wall can have hollow centre so that the passage of drilling fluid by drill collar to be provided.The external diameter of drill collar can for circle with well 27 by being crept into, and in some cases, the external diameter of described drill collar can processedly have helicla flute (" grooved drill collar ").Drill collar can comprise that an end is a male thread and another end is the threaded connector of box thread, makes a plurality of drill collars to be screwed to together with other downhole tool, to form Bottom Hole Assembly (BHA) 17.

Action of gravity is gone up so that big downward force to be provided at big quality drill collar (one or more), and drill bit 20 can need described downward force with fractured rock effectively and drill through earth formation.In order accurately to control the size of the power that is applied to drill bit 20, when drill bit 20 has just left the bottom surface 41 of well 27, can monitor the ground weight of measurement carefully.Next, can be slowly and transfer drill string (and drill bit) carefully, touch bottom surface 41 up to described drill string (and drill bit).After described point, when rig continued to transfer the top of drill string, increasing weight was applied to drill bit 20, and correspondingly can measure less weight when the suspension of place, ground.If the ground survey value shows 20,000 pounds [9080kg] (20,000 pounds of weight when leaving bottom surface 41 than drill bit 41 are little), then (in peupendicular hole) should have 20,000 pounds power on drill bit 20.Downhole sensor can be used for more accurately measuring the pressure of the drill, and data are sent to ground.

Drill bit 20 can comprise one or more gear wheels 23.In operation, drill bit 20 can be used to smash and/or the rock at 41 places, drilling bottom surface, so that well 27 is drilled through earth formation 30.Drill bit 20 can be arranged on the bottom of connector system 12, and when drill bit 20 rusts or become can not be further during by earth formation 30, more bit change 20.Can construct drill bit 20 and gear wheel 23 in a different manner the interaction different with earth formation to be provided and to generate different drilling modes.

Traditional drill bit 20 is worked by boring the well bigger slightly than the maximum outside diameter of drill bit 20, and the diameter/size of well 27 is produced by the interaction of the sphere of action of the gear wheel of drill bit 20 and gear wheel and the rock that crept into.This by creeping into of 20 pairs of wells 27 of drill bit can be by rotary drilling-head 20 the drilling effect and since the combination of the pressure of the drill that big quality drill string produces realize.Usually, well system can comprise gauge stretchable sheet (one or more), and described gauge stretchable sheet can extend outwardly into the size of well 27.The gauge stretchable sheet can comprise the stretchable sheet that is arranged on the Bottom Hole Assembly (BHA) 17 or in the end of some gear wheels of drill bit 20 and/or similar in the localities stretchable sheet.The gauge stretchable sheet can be used for drill bit 20 is stabilized in well 27.

Connector system 12 can comprise pipe (one or more)-such as drilling rod, sleeve pipe or similar pipe-flexible pipe and/or similar pipe.The pipe of connector system 12, flexible pipe or similar pipe can be used to connect ground installation 33 and Bottom Hole Assembly (BHA) 17 and drill bit 20.Pipe, flexible pipe or similar pipe can be used for drilling fluid pump is delivered to drill bit 20, and promote, transfer and/or rotate Bottom Hole Assembly (BHA) 17 and/or drill bit 20.

In some systems, ground installation 33 can comprise that top-drive device, rotating disk maybe can pass to the similar device (not shown) of drill bit 20 with rotatablely moving by pipe, flexible pipe or similar pipe.In some systems, top-drive device can be made up of one or more motors (electronic, hydraulic pressure and/or similar motor), and described motor can be connected to a bit of pipe that is called auger spindle by suitable gear.Auger spindle may be screwed to protection joint or drill string itself again.Top-drive device can hang from hook, makes described top-drive device can freely move up and down derrick.Pipe, flexible pipe or similar pipe can be connected to top-drive device, rotating disk or similar device, pass to drill bit 20 rotatablely moving along well 27.

In some well systems, the drill motor (not shown) can be provided with along well 27.Drill motor can comprise electro-motor, hydraulic motor and/or similar motor.The hydraulic motor can by drilling fluid or be pumped in the well 27 and/or along other fluid drives of drill string circulation.Drill motor can be used for providing power/rotate described drill bit to the drill bit on the bottom surface 41 20.Use drill motor can be used for coming drilling well eye 27 by rotary drilling-head 20 under the situation that does not need rotary connector system 12, described connector system can be maintained fixed during drilling process.

Drill bit 20 in well 27 no matter be by rotatablely moving of producing of rotary drill rod or drill motor can be used for smashing and/or the rock at 41 places, scraping bottom surface to bore one section new well 27 at earth formation 30.Drilling fluid can be pumped along well 27 by connector system 12 or similar system, energy being offered drill bit 20, thus rotary drilling-head 20 or similar device, to be used to creeping into well 27,41 to remove drilling cuttings and/or carry out similar action from the bottom surface.

In some well systems, can use the jarring drill bit with the vertical rock of thumping of job site pneumatic hammer mode much at one.In other well system, the drill bit that down-hole motor can be used for work bit 20 or be associated, perhaps except the energy that is provided by top-drive device, rotating disk, drilling fluid and/or similar device, down-hole motor can offer energy drill bit 20.In addition, fluid ejector, electric pulse and/or similar device can also be used for drilling well eye 27 or combine drilling well eye 27 with drill bit 17.

In some drilling process, the bend pipe (not shown) or the inclination/hinge type mechanism that are known as bent sub can be arranged between drill bit 20 and the drill motor.Bent sub or similar device can be positioned at well so that the surface of drill bit contact bottom surface 41 makes to be used for along concrete direction, angle, track and/or similar parameters drilling well eye 27.Remove from well 27 under the situation of connector system 12 and/or Bottom Hole Assembly (BHA) 17 not needing, can regulate the position of bent sub in well.Yet,, therefore utilize bent sub or similar device to carry out directed drilling and may become complicated because the power in the well may make bent sub be difficult to handle and/or be difficult to be used for effectively well system is led during drilling process.

During drill-well operation, the power on the drill bit 20 of can acting on can comprise gravity, the moment of torsion that produces by drill bit 20, the end load that is applied to drill bit 20, from the moment of flexure and/or the similar power of the well system that comprises connector system 12.These power can produce the complicated active force and the system with interaction of reaction force with the stratigraphic type that is being crept into and drill bit 20 with respect to the inclination angle on the surface of the bottom surface 41 of well 27.Various systems have been considered to be used for carry out directed drilling in the following manner: control/apply these bigger power with bending/shaping/guiding/promotion well system and/or use these bigger power and/or generate reaction forces in the earth formation 30 from outwards being advanced to, thereby well system is carried out orientation and/or described well system carried out orientation and/or promote drill bit 20 so that well system is led with respect to the bottom of well 27 in well, thereby directed drilling eye 27.

Yet using the power (for example, end load) of drilling process may be complicated with the system that well system is led, and the accurate guiding to well system may not be provided.In addition, by in well, moving/directed drilling system and/or push away system that drill bit 20 comes well system is led and may generate the bigger power that surpasses 1kN in the down-hole and/or need make the sizable distance of drilling scope that element extends beyond drill bit from drill string (promptly, profile considerably beyond drill bit, wherein said profile can be limited by the outer drilling edge of drill bit 20) be used to move/directed drilling system and/or push away the reaction force of drill bit 20 so that generate.When well system rotates,, may also need synchronously thrust to be applied on the wall of well 27 by actuator in order in well, to push away or mobile well system.This power generates, surpasses that the big extension of drilling profile of drill bit 20 and/or thrust may need bigger and/or expensive motor synchronously and/or to the operation and the control of complex synchronization system, and may be cost complicated and/or that increase well borer and drilling process.

When utilizing traditional well system drilling straight-hole, under the situation that does not apply lateral force or similar power, the applicant has determined drill bit 20 in well 27 " vibration " basically, and described vibration comprises that drill bit 20 repeating on the direction except drilling direction move.Term vibration/vibration is used to illustrate the repeating motion of well system during drilling process here, described repeating motion can the direction except drilling direction in well on, and in fact can be at random.

These vibration/vibrations of well system may be subject to the gear wheel and the gauge stretchable sheet of the wall of bump well 27 or the effect of similar device on the surface of impact and extended reach well.What found in test, is to comprise drill bit and the diameter of the well that the diameter that do not have a well that the well system of gauge stretchable sheet produces obviously produces greater than the equivalent well system that comprises drill bit and gauge stretchable sheet.Analysis is from the result of these tests, what can determine is operating period at well system, Bottom Hole Assembly (BHA) 17 repeats to be subjected to comprising the motion of central axis away from Bottom Hole Assembly (BHA) 17 and/or drill bit 20 (that is, towards the inwall 40 of well 27 in the radial direction) during drilling process.The analysis of various drill-well operations is obtained this radial motion of gauge stretchable sheet restriction Bottom Hole Assembly (BHA) 17 and/or drill bit 20, thereby produce the well that has than small bore.The gauge stretchable sheet of traditional well system is disposed minimizing/to eliminate the oscillating movement of well system, thereby less/rule boring is provided.

From experiment and analysis to well system, when the applicant finds in drill bit 20 creeps into earth formation 30, gear wheel 23 may not with the mutual effect of earth formation homogeneous phase, for example, may produce landwaste by earth formation 30, therefore, may in Bottom Hole Assembly (BHA) 17 and/or drill bit 20, produce unsteady motion (described unsteady motion be except Bottom Hole Assembly (BHA) 17 and/or drill bit 20 vertically/the motion of going up in a certain direction travelling forward).In addition, the applicant by analysis the operation of well system, and find except instability/transient motion of operating period of well system, power is applied to the earth formation 30 at the place, bottom of well 27 by connector system 12 and drill bit 20, operation/the rotation of drill bit 20, the interaction that drill bit 20 and earth formation are located in the bottom of well 27 (wherein, drill bit 20 possibility slippages, stall, leave the drilling well axis and/or produce similar action), rotatablely moving of connector system 12, the operation of top-drive device, the operation of turntable, the operation of down-hole motor, operation such as the drilling well auxiliary equipment of fluid ejector or electronic pulse system, boring of well 20 (described boring can be irregular) and/or similar action can produce motion in Bottom Hole Assembly (BHA) 17 and/or drill bit 20, and this motion can be repeating motion, random motion, transient motion, wherein, the component of described at least motion along the orientation of its axis of Bottom Hole Assembly (BHA) 17 and/or drill bit 20, does not radially outward point to from longitudinal axis in the center of Bottom Hole Assembly (BHA) 17 and/or drill bit 20 on the contrary.Therefore, during drill-well operation, the power of Bottom Hole Assembly (BHA) 17 can comprise along the lengthwise movement 37 of drilling direction and transition radial motion 36A and 36B, wherein, transition radial motion 36A and 36B can comprise the arbitrary motion that Bottom Hole Assembly (BHA) 17 is pointed to away from the central axis of the central axis 39 of the well 27 of being crept into and/or Bottom Hole Assembly (BHA) 17 and/or drill bit 20.

In a word, it has been determined that the radial motion of Bottom Hole Assembly (BHA) 17 during drilling process in fact can be at random, transition.Therefore, Bottom Hole Assembly (BHA) 17 may be subjected to repeating at random radially/unsteady motion at whole drilling process.In order to carry out this explanation, Bottom Hole Assembly (BHA) 17 can be called as the dynamic motion of Bottom Hole Assembly (BHA) 17 and/or drill string, radial motion, unsteady motion, radially dynamic motion, radially unsteady motion, dynamic or unsteady motion, repeat radial motion, repetition dynamic motion, repetition unsteady motion, vibration, oscillating mode motion and/or similar motion in the repeat radial/unsteady motion in well 27 during the drilling process.

Bottom Hole Assembly (BHA) 17 during the creeping into of well 27 dynamically and/or unsteady motion can produce/cause Bottom Hole Assembly (BHA) 17 and in whole drilling process, repeat to contact and/or impact described inner surface with the inner surface of well 27.The inner surface of well 27 comprises the inwall 40 and the bottom surface 41 of well 27,, limits the whole surface of the earth formation 30 of well 27 that is.As discussed previously, Bottom Hole Assembly (BHA) 17 dynamically and/or unsteady motion in fact can be at random, therefore, can produce/cause random and periodical/repeat to contact and/or impact between Bottom Hole Assembly (BHA) 17 and the inner surface during the drilling process.

By Bottom Hole Assembly (BHA) 17 during the drilling process dynamically and/or between the drill string 10 that produces of unsteady motion and the inner surface the intermittence/repeat to contact and/or impact one or more part/parts that may occur in drill string 10 and inner surface.For example, described part/parts can be the parts of the close drill bit 20 of drill string 10, Bottom Hole Assembly (BHA) 17, and the parts of Bottom Hole Assembly (BHA) 17 are (for example, drill collar, gauge stretchable sheet, stabilizer, motor), the part of connector system 12 and/or similar portions/parts.In order to describe, between drill string 10 and the inner surface by Bottom Hole Assembly (BHA) 17 dynamically and/or the interaction of instability generation/cause can be called as dynamic interaction, unstable phase mutual effect, radial motion interaction, vibration interaction and/or similar interaction.

Fig. 2 A is according to an embodiment of the invention, is used for the schematic diagram of the system that the well system to drilling well eye usefulness leads.In Fig. 2 A, the well system of drilling well eye usefulness can comprise Bottom Hole Assembly (BHA) 17, and described Bottom Hole Assembly (BHA) can comprise drill bit 20 again.Well system can be used to creep into the well 50 that has inwall 53 and creep into face 54.

During drilling process, drill bit 20 can contact the face of creeping into 54 and smash/move the rock that creeps into table 54 place.In an embodiment of the present invention, drill collar assembly 55 can be connected with Bottom Hole Assembly (BHA) 17 by flexible member 57.Drill collar assembly 55 can be pipe, cylinder, framework or similar assembly.Drill collar assembly 55 can have external surface 55A.

Drill collar assembly 55 comprises in the aspect of pipe, cylinder and/or similar assembly therein, and external surface 55A can comprise the external surface of pipe/cylinder and/or any stretchable sheet, jut and/or the like that is connected with the external surface of pipe/cylinder.The external surface of drill collar assembly 55 can have and is used to increase the external surface of drill collar assembly 55 and coarse part, coating, the jut of the CONTACT WITH FRICTION between the inwall 53.Drill collar assembly 55 can comprise the stretchable sheet that is configured for contacting inwall 53.

In certain aspects, drill collar assembly 55 can comprise gauge stretchable sheet system.Drill collar assembly 55 can comprise that (for example, stretchable sheet or like in) the aspect, external surface 55A can be limited by each the external surface in the element (stretchable sheet) of drill collar assembly 55 a series of elements therein.In an embodiment of the present invention, drill collar assembly 55 can form with Bottom Hole Assembly (BHA) 17 structure so that during drilling process external surface 55A and inwall 53 and/or creep into face 54 and engage, contact, interact owing to the dynamic motion of Bottom Hole Assembly (BHA) 17 and/or carry out similar action.Structure/profile of external surface 55A/flexibility and/or external surface 55A can be used to control external surface 55A and inwall 53 with respect to the layout of the drilling profile of drill bit 20 and/or creep into dynamic interaction between the face 54.

Flexible member 57 can comprise that it is at least in part towards moving that the central axis 61 of Bottom Hole Assembly (BHA) 17 points to that the structure of drill collar assembly 55 with respect to the lateral movement of drill bit 20, wherein said lateral movement are provided.In certain aspects, it is flexible that drill collar assembly 55 can be formed on the lateral itself, and can be connected to Bottom Hole Assembly (BHA) 17 under the situation of flexible member 57 and/or can be the part of Bottom Hole Assembly (BHA) 17 not needing to use.

In one embodiment of the invention, the flexibility of flexible member 57 can along the circumferential direction be heterogeneous.In such an embodiment, the flexibility of one or more parts on lateral that is provided with around the circumference of flexible member 57 of flexible member 57 can be bigger than the flexibility of the other parts of flexible member 57.

As previous observed, during drilling process, one or more parts of Bottom Hole Assembly (BHA) 17 or Bottom Hole Assembly (BHA) 17 may be subjected to inwall 53 and/or creep into the dynamic interaction of face 54.In an embodiment of the present invention, drill collar assembly 55 can be configured such that dynamic motion in Bottom Hole Assembly (BHA) during the drilling process 17 is at drill collar assembly 55 and inwall 53 and/or creep between the face 54 and produce dynamic interaction.In different aspect of the present invention, drill collar assembly 55 can provide drill collar assembly 55 and inwall 53 and/or creep into dynamic interactions different between the face 54 with relative excircle difference between Bottom Hole Assembly (BHA) 17 and/or the drill bit 20.For concrete drilling process, simulation, theory analysis, experiment and/or similar research can be used to select drill collar assembly 55 poor with the relative excircle between Bottom Hole Assembly (BHA) 17 and/or the drill bit 20, with generation want/expectation dynamic interaction.

In the embodiment that flexible member 57 along the circumferential direction changes, drill collar assembly 55 and inwall 53 and/or the dynamic interaction that creeps between the face 54 along the circumferential direction can be uneven around drill collar assembly 55 in wherein lateral flexibility of the present invention.Only in the mode of example, flexible member 57 can comprise and reduces flexibility district 59B and increase flexibility district 59A.In certain aspects, with the part that reduces lateral flexibility having of flexible member 57 (promptly, reduce flexibility district 59B) the top compare at drill collar assembly 55 and inwall 53 and/or the dynamic interaction that creeps between the face 54, in part (that is, increasing flexibility district 59A) top that having of flexible member 57 increases lateral flexibility at drill collar assembly 55 and inwall 53 and/or creep into that dynamic interaction can be weakened between the face 54.

In some embodiments of the invention, drill collar assembly 55 can be configured such that drill collar assembly 55 is connected with Bottom Hole Assembly (BHA), so that in the whole drilling profile 21 that is arranged on drill bit 20 of drill collar assembly 55, and drilling profile 21 comprises the drilling profile while arriving of drill bit 20.In other embodiments of the invention, the part of the part of drill collar assembly 55, drill collar assembly 55, external surface 55A and/or external surface 55A can extend beyond drilling profile 21.Only in the mode of example, drill collar assembly 55 can be connected with Bottom Hole Assembly (BHA) 17, so that external surface 55A is about tens millimeters of 1-in drilling profile 21.In others, and once more only in the mode of example, drill collar assembly 55 can be connected with Bottom Hole Assembly (BHA) 17, so that at least a portion of external surface 55A reaches tens millimeters scope or in larger scope extending beyond drilling profile 21.

Fig. 2 B be according to an embodiment of the invention, by the cross-sectional view that flexiblesystem that system that the well system to drilling well eye usefulness leads uses intercepts that is used at Fig. 2 A.Flexible member shown in the cross section in Fig. 2 B comprises to be increased flexibility district 59A and reduces flexibility district 59B.In certain aspects, in flexible member 57, can only have zone and/or other the regional increase be left with respect to flexible member 57 or the single zone that reduces flexibility.In others, flexible member 57 can comprise any structure that produces non-homogeneous flexibility around flexible member 57.

In Fig. 2 B, flexible member 57 is shown as the solid cylindrical structure, yet, in different aspect of the present invention, flexible member 57 can comprise the structure of other type, for example, around Bottom Hole Assembly (BHA) 17 arrange and be configured to drill collar assembly 55 be connected to Bottom Hole Assembly (BHA) 17 a plurality of flexible members, drill collar assembly 55 can be connected to Bottom Hole Assembly (BHA) 17 and the assembly and/or the similar structures of support component of the lateral movement of drill collar assembly 55 is provided.In others of the present invention, drill collar assembly 55 itself can be the structure with integral type flexible part, wherein can be selected as around drill collar assembly 55 be uneven to the integral type flexible part, and under the situation that does not have flexible member 57, drill collar assembly 55 can be connected with Bottom Hole Assembly (BHA) 17, perhaps can be the part of Bottom Hole Assembly (BHA) 17.In aspect another, drill collar assembly 55 can comprise a plurality of flexible members such as stretchable sheet or like, and a plurality of flexible member is connected with Bottom Hole Assembly (BHA) 17, and in the flexible member at least one has the flexibility that is different from other flexible member.

In an embodiment of the present invention, increasing flexibility district 59A can be arranged on the flexible member 57 with to reduce flexibility district 59B relative along diametric(al).In such an embodiment, flexible member 57 can prevent that drill collar assembly inside in the position that reduces flexibility district 59B (making progress) from moving as shown in Fig. 2 A, but can allow drill collar assembly 55 inside at increase 59A place, flexibility district (downward as shown in Fig. 2 A) to move.Therefore, when drill bit 20 is subjected to dynamic motion during drilling process, described drill bit 20 can and/or creep into face 54 with inwall 53 and interact, and can be often along the direction that increases flexibility district 59A and/or towards described increase flexibility district (as shown in Fig. 2 A upwards) move, be directed or preferentially smash/remove rock.In such an embodiment, because flexible member 57 has selecteed non-homogeneous flexibility, therefore during drilling process, because 17 and the dynamic motion of drill bit 20, flexible member 57 can make well system be directed to, and the directed drilling to well 50 can be provided.During drilling process, the INHOMOGENEOUS INTERACTION of the inner surface of well system and well 27 can also be used to control the interaction of drill bit 20 and earth formation, and therefore can also be used to control the function of drill bit 20.

In an embodiment of the present invention, any non-homogeneous circumferential flexibility of drill collar assembly 55 or flexible member 57 can be used for well system is led/controls.The non-homogeneous flexibility sectional drawing that can select the size of different flexibilities of drill collar assembly 55 and/or flexible member 57 and/or drill collar assembly 55 and/or flexible member 57 is to provide guiding response and/or the control to drill bit 20 expectations.For flexibility difference and/or circumferential flexibility sectional drawing, can be in theory, derive, determine the guiding response and/or the drill bit response of well system by simulation, by experiment by previous drilling process and/or similar approach.

Be configured for not relating to that the well system that uses rotary drilling-head uses or (for example of the present invention at the shell of well system, the shell of Bottom Hole Assembly (BHA)) be that drill collar assembly 55 and/or flexible member 57 can be connected with well system or shell among the embodiment under the non-rotary situation.In such an embodiment, well system can be arranged in the well, and increases flexibility district 59A and be set to drill bit 20 at concrete place, orientation, to be used for along the direction drilling well eye 50 that increases flexibility district 59A.In order to change drilling direction, can change the position that increases flexibility district 59A by well system.

In certain embodiments, can comprise that the positioner 65 of motor, hydraulic actuator and/or similar device can be used for rotation/location drill collar assembly 55 and/or flexible member 57, to be used for by the direction drilling well eye 50 of well system along expectation.Positioner 65 can be communicated by letter with processor 70.Processor 70 can be controlled positioner 65 so that the directed drilling of expectation to be provided.Processor 70 can be determined drill collar assembly 55 and/or the position of flexible member 57 in well 50 by manual intervention, can also determine the end points target of well, the wellbore trace of expectation, the drill bit response of expectation, the interaction of drill bit and earth formation expectation, geological data, the input from the sensor (not shown) about the data of earth formation can be provided, condition in the well 50, well data (for example, the pressure of the drill, bit speed and/or class likelihood data), the vibration data of well system, dynamic interaction data and/or about the class likelihood data of the location/position of drill bit in earth formation, data and/or class likelihood data about the track/direction of well.

Processor 70 can be connected with the display (not shown) to show orientation/direction/position, well system, drill bit 20, drill collar assembly 55, flexible member 57, bit speed, wellbore trace and/or the similar parameters of well 50.Display can be supplied to data away from the drilling well position and by for example Internet connection, network connection, radio communication connection and/or similar connection, and can be used for the remote-controlled operation drilling process.The data of from processor 70 can be stored in memory and/or other processor and/or the system that is associated with drilling process given in communication.

In another embodiment of the present invention, guiding/drill bit function control system can be configured to use with rotary-type well system, in described rotary-type well system, drill bit 20 can rotate during drilling process, therefore, drill bit 20 and/or Bottom Hole Assembly (BHA) 17 can be rotated in well 50.In such an embodiment, drill collar assembly 55 and/or flexible member 57 can be configured such that the motion of drill collar assembly 55 and/or flexible member 57 is independent or be independent of rotatablely moving of drill bit 20 and/or Bottom Hole Assembly (BHA) 17 to small part.Therefore, during drilling process, it is static over the ground that drill collar assembly 55 can keep in well 50.

In certain aspects, drill collar assembly 55 and/or flexible member 57 can be passive systems, and described passive system comprises the one or more cylinders that are provided with around well system.In some cases, one or more cylinders can be provided with around the Bottom Hole Assembly (BHA) 17 of well system.One or more cylinders can be configured to be independent of the well system rotation.In these areas, one or more cylinders can be configured such that the friction between one or more cylinders and the stratum can fix, and the friction between one or more cylinder and the stratum prevents that one or more cylinders are rotated motion with respect to the rotary drilling system.In aspect more of the present invention, when not having the pressure of the drill and therefore not having drilling well at the moment, one or more cylinders can lock onto Bottom Hole Assembly (BHA), and when applying the pressure of the drill and beginning drilling well, described one or more cylinders are directed and are released from Bottom Hole Assembly (BHA) then; Friction between one or more cylinders and the inner surface keeps the orientation of one or more cylinders.In aspect more of the present invention, one or more cylinders can be connected with Bottom Hole Assembly (BHA) 17 by bearing or like.

In some embodiments of the invention, when in non-rotating well system, the position of one or more cylinders can be provided by positioner 65, described positioner can make the position of one or more cylinder rotations with the effective area of change cylinder in well 50, thereby changes the function of drilling direction and/or drill bit 20.For example, flexible member 57 can comprise cylinder and can rotate around Bottom Hole Assembly (BHA) 17, change increasing flexibility district 59A and/or to reduce the position of flexibility district 59B, thereby change the drilling direction of well system owing to the dynamic interaction between drill collar assembly 55 and the inwall 53.Alternatively, active controller can be used for during drilling process keeping drill collar assembly 55 and/or flexible member 57 position/location with respect to the expectation of Bottom Hole Assembly (BHA) 17.In addition, this class device can use in motor sub-assembly to replace bent sub.This benefit of bringing is by pipeline and completion restriction assembly to be transferred in the well when with the rotation mode drilling straight-hole.

Fig. 3 A-3C be according to an embodiment of the invention, for the schematic diagram of the cam control system that well system is led.Fig. 3 A has shown the directed drilling system that has cam control system according to an embodiment of the invention.In Fig. 3 A, well system drills through earth formation with well 50.Well system comprises that be arranged on will be drilled/or the Bottom Hole Assembly (BHA) 17 at the place, end of the well 50 of being crept into.Bottom Hole Assembly (BHA) 17 comprises drill bit 20, described drill bit contact earth formation and drilling well eye 50.

In an embodiment of the present invention, gauge stretchable sheet assembly 73 can be connected with Bottom Hole Assembly (BHA) 17 by flexible coupler 76.Gauge stretchable sheet assembly 73 can comprise the non-drilling limit and/or the similar device of one or more gear wheels of drill collar, cylinder, drill bit 20.Fig. 3 B shows gauge stretchable sheet assembly 73 according to an aspect of the present invention.As shown in the figure, gauge stretchable sheet assembly 73 comprises the cylinder 74A with a plurality of stretchable sheet 74B, and described a plurality of stretchable sheets are arranged on the surface of cylinder 74A.In certain aspects, a plurality of stretchable sheet 74B can have flexible characteristic, and in others, a plurality of stretchable sheet 74B can be inflexibilities, and can comprise metal.In some embodiments of the invention, gauge stretchable sheet assembly 73 itself can be flexible, and flexible gauge stretchable sheet assembly can be connected with the element of Bottom Hole Assembly (BHA) 17 under the situation that does not have flexible coupler 76.

In one embodiment of the invention, cam 79 can be connected with Bottom Hole Assembly (BHA) 17.Cam 79 can move on Bottom Hole Assembly (BHA) 17.In an embodiment of the present invention, cam 79 can comprise off-centre/asymmetric cylinder.Cam 79 can move with contact gauge stretchable sheet assembly 73.Gauge stretchable sheet assembly 73 can be configured to contact inwall 53 and/or creep into face 54 during the process of drilling well eye 50.Gauge stretchable sheet assembly 73 can directly be connected with Bottom Hole Assembly (BHA) 17, be connected to Bottom Hole Assembly (BHA) 17 by coupling 76 or like.Coupling 76 can comprise flexible/elastic section bar material, and described flexible/elastic section bar material can allow gauge stretchable sheet assembly 73 to move with respect to Bottom Hole Assembly (BHA) 17.

Cam 79 can be activated by controller 80.Controller 80 can comprise motor, hydraulic system and/or similar system, and can be used at translating cam during the drilling process 79 and/or maintenance cam 79 static over the ground in well 50.In certain aspects, cam 79 can comprise having external surface 81 and the groove in external surface 81 82.In these areas, during drilling process, controller 80 can be used for that cam 79 is moved to external surface 81 can be near gauge stretchable sheet assembly 73 or the active position that contacts with described gauge stretchable sheet assembly.In some embodiments of the invention, can not have controller 80, and can before being positioned at Bottom Hole Assembly (BHA) 17 in the well 50, can for example cam 79 be set to active position.

In one embodiment of the invention, cam 79 can be used for by making that the characteristic of gauge stretchable sheet assembly 73 is heterogeneously to control gauge stretchable sheet assembly 73 and inwall 53 and/or creep into dynamic interaction between the face 54 around gauge stretchable sheet assembly 73.In yet another embodiment of the present invention, replace using cam 79 to change characteristic, position and/or the similar characteristics of gauge stretchable sheet assembly 73, piezo-activator, hydraulic actuator and/or other mechanical actuator can be used to make gauge stretchable sheet assembly 73 to have non-homogeneous characteristic, make non-homogeneous characteristic can be used to control gauge stretchable sheet assembly 73 and inwall 53 and/or creep into dynamic interaction between the face 54.

At active position, that is, in cam 79 and position that gauge stretchable sheet assembly 73 engages, can suppress gauge stretchable sheet assemblies 73 moving by cam 79 along the lateral central axis of Bottom Hole Assembly (BHA) 17 and/or well 50 (that is, towards).At the active position place, groove 82 can separate spacing 83 with gauge stretchable sheet assembly, and wherein spacing 83 is greater than in other position gauge stretchable sheet assembly 73 of system for winding and the spacing between the external surface 81.Therefore, compare with the other parts that are arranged on external surface 81 tops of gauge stretchable sheet assembly 73, the part of gauge stretchable sheet assembly 73 above groove 82 can have more freedom degree/can shifted laterally.Therefore, will be uneven around gauge stretchable sheet assembly 73 at gauge stretchable sheet assembly 73 and inwall during the drilling process and/or the interaction of creeping between the face 54.

In aspect more of the present invention, cam 79 can be used to control the skew of gauge stretchable sheet assembly 73, thereby so that gauge stretchable sheet assembly 73 produces skew well system is led, thereby the skew that perhaps reduces in the gauge stretchable sheet assembly 73 is used for drilling straight-hole.Embodiment in the operation that is used for controlling drill bit 20, cam 79 can be used to control the skew of gauge stretchable sheet assembly 73,, thereby or reduce the different qualities that skew in the gauge stretchable sheet assembly 73 provides drill bit 20 so that thereby gauge stretchable sheet assembly 73 produces a certain characteristic that skew produces drill bits 20.

Cam 79 can comprise camcylinder.In operation, cam 79 can engage with gauge stretchable sheet assembly 73, and can be so that at least a portion of gauge stretchable sheet assembly 73 can be with respect to drill bit 20 sizes big (over gauge).Therefore, larger-size gauge stretchable sheet assembly 73 can contact in mode heterogeneous with the inner surface of well 50.Cam 79 can have the external diameter that has steady change to be used for the stable dimension/diameter that changes at least a portion of gauge stretchable sheet assembly 73 during drilling process.

During drilling process, Bottom Hole Assembly (BHA) 17 can be subjected to dynamic motion in well 50, thereby produces dynamic interaction between the inner surface of Bottom Hole Assembly (BHA) 17 and well 50.In an embodiment of the present invention, since with compare with respect to the flexibility of the gauge stretchable sheet assembly 73 of the position of the opposite side of groove at gauge stretchable sheet assembly 73, gauge stretchable sheet assembly 73 above groove 82 has bigger flexibility, therefore gauge stretchable sheet assembly 73 and inwall 53 and/or creep into the dynamic interaction that repeats between the face 54 well system will be crept into along drilling direction 85, wherein drilling direction 85 is along the direction sensing of groove 82.When engaging, cam 79 can prevent that gauge stretchable sheet assembly 73 inside (making progress as shown in the figure) from moving, but can allow gauge stretchable sheet assembly 73 in the opposite direction (downward as shown in the figure) mobile.Therefore, drill bit 20 will move up, vibrate with respect to gauge stretchable sheet assembly 73, be used for thus by the well system edge upward to creeping into towards groove 82, to produce the section of being directed upwards towards of well 50.

In an embodiment of the present invention, cam 79 can be used to make gauge stretchable sheet assembly 73 axis in geostationary plane with the journal offset of drill bit 20.In certain aspects, when gauge stretchable sheet assembly 73 rotates with drill bit 20 and/or Bottom Hole Assembly (BHA) 17, can provide the skew of gauge stretchable sheet assembly 73 by cam 79.

When the bending section that uses well system drilling well eye (for example, having the bending sections of/100 feet hole deviations of 10 degree), the actual sidetracking of well can be less; For example, in this bending section, for the well of creeping into 150mm (6 inches) forward, the sidetracking of well is 0.07mm.In an embodiment of the present invention, because it is less to be used to produce the sidetracking of bending section with per 100 feet about 10 degree hole deviations, therefore be used for during drilling process, producing the little deflection that can generate well with the system of the in check non-homogeneous dynamic interaction of the inner surface of well.In experiment, use drill collar/gauge stretchable sheet assembly that central axis with respect to Bottom Hole Assembly (BHA) and/or drill bit has an eccentric circumferentially profile (comprising the big and/or less eccentric profile of size with respect to bit size) that the control of dynamic interaction is produced guiding to the bending section with this desired curvature of well to embodiments of the invention.

In aspect more of the present invention, in order to minimize power demand, gauge stretchable sheet assembly 73 can be installed on the flexible coupler 76, and the dead in line of the axis of gauge stretchable sheet assembly 73 and drill bit 20 and/or drilling system, and described drilling system can comprise drill bit 20.In an embodiment of the present invention, can realize guiding with the direction of the flexibility of restriction flexible coupler 76 by using cam 79 to well system, therefore gauge stretchable sheet assembly 73 can move in one direction, but but is unusual (motion is radially had repellence) of rigidity in the opposite direction.In certain aspects, for well system is led with drilling straight-hole, described cam 79 can be engaged so that moving on all directions of gauge stretchable sheet assembly 73 systems is (can not carry out radial motion) of rigidity.

In an embodiment of the present invention, gauge stretchable sheet assembly 73 can comprise single ring-shaped component, and described ring-shaped component carries the gauge stretchable sheet, and described ring-shaped component cooperates with drill bit 20 sizes.In certain aspects, size is big or size is less is admissible among a small circle.In optional embodiment, the stretchable sheet on the gauge stretchable sheet assembly 73 can be installed in ring-shaped component and/or can be by independent control independently.Gauge stretchable sheet assembly 73 can be installed on the rigid and flexible structure, and can move radially with respect to drill bit 20.Cam 79 can be eccentric, and can be configured to when well system is led static over the ground and be introduced into, remove and/or similar action when drill string is making a trip or do not expecting to lead.By cam 79 is remained on geostationary position, the active part of cam 79 (for example, groove 83 or similar portions) can remain on resting position over the ground to be used for the direction direction of geostationary groove 83 (for example, along) drilling well eye 50 with respect to well 50 along expectation.In certain aspects, cam 79 can be geostationary, and gauge stretchable sheet or like can rotate freely during drilling process.

As discussed previously, the whole bag of tricks can be used to connect gauge stretchable sheet assembly 73 and drill bit 20 and/or Bottom Hole Assembly (BHA) 17.In certain aspects, support can be a radial compliance, but can also give Bottom Hole Assembly (BHA) 17 with moment of torsion and axial weight transmitting.In one embodiment of the invention, can be that the flexible coupler 76 of support or like can comprise thin cylinder, described thin cylinder have groove otch in cylinder to allow radially flexibility ratio but keep tangential and axial stiffness.Other embodiment can comprise and be used for weight transmitting can be used for the male joint of transfer torque and/or the bearing surface of pivotal arm.

Use can retaining groove 82 (or the larger-size part of cam 79, in the less part of size, or the combination of the radial rigidity of cam 79 and gauge stretchable sheet assembly 73 or gauge stretchable sheet assembly 73 or radial compliance part) structure of geostationary gauge stretchable sheet assembly 73 and/or flexible coupler 76 in well 50, well system can be controlled to directed drilling eye 50.In some embodiments of the invention, processor 75 can be used for steering controller 80 being used for making cam 79 rotation during the drill-well operation or between described drill-well operation, thus the direction of continuous control drilling process.In certain embodiments, groove 82 can have the classification profile 82A of the degree of depth that is used to change groove 82.In such an embodiment, can change gauge stretchable sheet assembly 73 in the not relative flexibility of gauge stretchable sheet assembly 73 part groove 82 above between of the part above the groove 82 with respect to gauge stretchable sheet assembly 73.Like this, in some embodiments of the invention, can control the acute angle (θ) 86 of drilling direction 85 in the mode that changes.

In aspect more of the present invention, a plurality of grooves can be arranged in the cam 79 to be used to control the interaction between gauge stretchable sheet assembly 73 and the inwall 53.A plurality of grooves can be arranged on different positions around the circumference of cam 79, so that the guide effect of expectation to be provided.In addition, a plurality of cams can use so that different guide effect to be provided during drilling process together with the one or more gauge stretchable sheet assemblies on the Bottom Hole Assembly (BHA) 17.

Fig. 4 A-4C is according to an embodiment of the invention, is used to control the schematic diagram of active (active) gauge stretchable sheet system of the well system that is configured to the drilling well eye.In an embodiment of the present invention, active gauge stretchable sheet 100 can be used to control the well system of drilling well eye usefulness, and described well system can comprise the drilling rod 90 that is connected with Bottom Hole Assembly (BHA) 95.Bottom Hole Assembly (BHA) 95 can comprise the drill bit 97 that is used for the drilling well eye.Active gauge stretchable sheet 100 can comprise drill collar, gauge stretchable sheet, Bottom Hole Assembly (BHA) a part, tubular assembly, drill bit a part and/or can be with the inner surface interactional like of non-homogeneous mode with the well of being crept into.

Active gauge stretchable sheet 100 can comprise disk, cylinder, a plurality of independent component-for example, the a series of stretchable sheets that are provided with around the circumference of Bottom Hole Assembly (BHA) 95 or drilling rod 90, described disk, cylinder, a plurality of independent component can be connected with well system, and interact with the inner surface of the well of being crept into during drilling process.In certain aspects, for the interaction that repeats between the inner surface that active gauge stretchable sheet 100 or like and well are provided, active gauge stretchable sheet 100 can be connected with well system with the distance of drill bit 97 less than 20 feet.In others, active gauge stretchable sheet 100 can be connected with well system with the distance of drill bit 97 less than 10 feet.

In an embodiment of the present invention, active gauge stretchable sheet 100 can move in well.Therefore, active gauge stretchable sheet 100 can use actuator or similar device to navigate to orientation in the well in well, produces control to the well system expectation with the INHOMOGENEOUS INTERACTION owing to active gauge stretchable sheet 100 (in being oriented in well time) and the inner surface of well.Use processor or similar device to control the position of active gauge stretchable sheet 100 in well, can control/handle operation and/or guiding, and this control/manipulation can take place in real time in certain aspects well system.

In Fig. 4 A, the interaction with the inner surface of the well that provides and crept in the position near drill bit 97 is provided with Bottom Hole Assembly (BHA) 95 active gauge stretchable sheet 100.In the well system that drilling rod 90, Bottom Hole Assembly (BHA) 95 and/or like rotate during drill-well operation, active gauge stretchable sheet 100 keeps static over the ground during can being formed at drill-well operation therein.Actuator, frictional force and/or similar device can be used to keep active gauge stretchable sheet 100 static over the ground.Only in the mode of example, in one embodiment of the invention, active gauge stretchable sheet can the distance less than the 10-20 foot be connected with Bottom Hole Assembly (BHA) 95 in drill bit 97 back.

Fig. 4 B shows an embodiment of the active gauge stretchable sheet of the system shown in Fig. 4 A.In Fig. 4 B, according to embodiments of the invention, active gauge stretchable sheet 100A can comprise asymmetric element.By asymmetric active gauge stretchable sheet is connected the external surface that makes the external surface of gauge stretchable sheet 100A extend beyond drill string with drill string, the external surface of asymmetric active gauge stretchable sheet can interact with the inner surface of the well of being crept into.Because active gauge stretchable sheet 100A has asymmetric external surface, therefore active gauge stretchable sheet 100A can interact with the inner surface of well owing to drill string carries out dynamic motion in mode heterogeneous during drilling process, and described non-homogeneous mode depends on the unsymmetric structure of active gauge stretchable sheet 100A.

Only in the mode of example, the structure of active gauge stretchable sheet 100A can be asymmetric, and can be configured to be connected with Bottom Hole Assembly (BHA) as several inches distances that arrive in the scope of 10-20 foot in the drill bit back that provided among Fig. 4 A.In certain embodiments, active gauge stretchable sheet 100A can comprise even cylinder and can be arranged in prejudicially on the Bottom Hole Assembly (BHA), to provide since the dynamic motion of drill string and with inner surface interaction heterogeneous.

In certain embodiments, active gauge stretchable sheet 100A can comprise stationary tube over the ground, and size is less a little in a side.In other embodiments, active gauge stretchable sheet 100A can be less in a side size, and can size bigger at opposite side.In certain aspects, active gauge stretchable sheet 100A can comprise a plurality of stationary tubes over the ground, and described stationary tube over the ground size in a circumferential direction is less or size is bigger, and can connect around the circumference of drilling rod 90 and/or Bottom Hole Assembly (BHA) 95.In an embodiment of the present invention, active gauge stretchable sheet 100A can be configured to make active gauge stretchable sheet 100A to be connected with drill string, makes in the whole drilling profile that is arranged on drill bit of active gauge stretchable sheet 100A; The drilling profile comprises edge-to-edge's drilling profile of drill bit.In other embodiments of the invention, the part of active gauge stretchable sheet 100A or all active gauge stretchable sheet 100A can extend beyond the drilling profile of drill bit.

Only in the mode of example, active gauge stretchable sheet 100A can be connected with drill string so that the external surface of active gauge stretchable sheet 100A about tens millimeters of 1-in the drilling profile.In others, and once more only in the mode of example, active gauge stretchable sheet 100A can be connected with drill string so that at least a portion of the external surface of active gauge stretchable sheet 100A extends beyond the drilling profile at a few tenths of millimeter in tens millimeters scope.

In an embodiment of the present invention, because active gauge stretchable sheet 100A and Bottom Hole Assembly (BHA) are decentraction, but asymmetric and/or similar structures, therefore active gauge stretchable sheet 100A since the radial motion of well system in well can and during drilling process, interact with the inner surface of mode heterogeneous with the well of being crept into.The dynamic interaction that repeats between the inner surface of active gauge stretchable sheet 100A (as shown in Fig. 4 B) and well during the drilling process can make well system often creep into along downward direction 103, as shown in FIG..By keeping active gauge stretchable sheet 100A static over the ground during drilling process, active gauge stretchable sheet 100A can be used for well system is led.

In an embodiment of the present invention, can be used for little gap that drill bit 97 is led by making active gauge stretchable sheet 100A less than size, can between active gauge stretchable sheet 100A and inner surface, producing at least one circumferential position of the circumference that is wound with source gauge stretchable sheet 100A.Therefore, in some embodiments of the invention, can come well system is led by utilizing the contact surface on the Bottom Hole Assembly (BHA) 95, described contact surface can be shifted contact surface outside the drilling profile onto in by the profile of gear wheel drilling and/or not.

Fig. 4 C shows another embodiment of the active gauge stretchable sheet of the system shown in Fig. 4 A.In Fig. 4 C, active gauge stretchable sheet 100B can comprise the drill collar 105 that is connected with extensible element 107.Drill collar 105 can comprise the part of cylinder, disk, drill collar gauge stretchable sheet, Bottom Hole Assembly (BHA) 95, the part of drill string, a part and/or the like of drilling rod.

In an embodiment of the present invention, extended element 107 can be the element that can be controlled to change the circumferential profile of drill collar 105.Extended element 107 can controlled device 110 control/actuatings.Controller 110 can comprise motor, hydraulic system and/or similar device.In an embodiment of the present invention, controller 110 can activate extended element 107 stretching out from Bottom Hole Assembly (BHA) 95, thus change by well system during the drilling process in well radially/dynamic interaction between the inner surface of dynamic motion and the active gauge stretchable sheet 100B that produces and the well of being crept into.

In some embodiments of the invention, active gauge stretchable sheet 100B can be configured such that active gauge stretchable sheet 100B integral body is arranged in the drilling profile of drill bit when extending.In other embodiments of the invention, the active gauge stretchable sheet 100B that one section or whole extension/part is extended can extend beyond the drilling profile of drill bit.Only in the mode of example, active gauge 100B can be connected with drill string so that the external surface of the active gauge 100B in the extended position about 1-10mm in the drilling profile.In others, and once more only in the mode of example, active gauge stretchable sheet 100B can be connected with drill string, so that at least a portion of the external surface of active gauge stretchable sheet 100B extends beyond the drilling profile at a few tenths of millimeter in tens millimeters scope when extending or partly extend.

In an embodiment of the present invention, can control interaction between active gauge stretchable sheet 100B and the inner surface by the location/extension of extended element 107, be used for to well system lead and by well system to just carrying out directed drilling in the drilled well of advancing.In certain aspects, processor 70 can receive about the data of the drilling direction of expectation, about the data of drilling process, about the data of well, about the condition in the well data, geological data, about the data and/or the class likelihood data on the stratum that surrounds well, and can operation control 110 so that the location/extension of extended element 107 to be provided, thereby well system is led.In an embodiment of the present invention, extended element 107 can extend with the dynamic interaction between the inner surface of the well of regulating active gauge stretchable sheet 100 and being crept into.This may need extended element 107 simple passive extensions, makes active gauge stretchable sheet 100 have the non-homogeneous shape around the central axis of well system and/or well, and need not and thrust or power must be applied on the inner surface.

Yet in certain aspects, extended element 107 can be positioned, extend so that power is applied on the inner surface.Only in the mode of example, in certain embodiments, extended element 107 can be applied to the power less than 1kN on the inner surface, to be used for being applied on the well system reaction force from inner surface and the dynamic interaction between control well system and the inner surface.Because the power of 1kN can not need very big down-hole power consumption/power supply, can reduce the size and sophistication of controller 110 and/or like.Operating extended element 107 is favourable with the power that is used to apply less than this power.

In an embodiment of the present invention, Bottom Hole Assembly (BHA) 95, drill bit 97, active gauge stretchable sheet 100 and/or like can be constructed with uneven distributed mass.The quality of Bottom Hole Assembly (BHA) 95, drill bit 97, active gauge stretchable sheet 100 and/or like can along the circumferential direction or in a similar manner change, so that the interaction between the inner surface of the unsteady motion of well system and/or well system and well is uneven.Therefore, the non-homogeneous weight of well system can be used for well system is controlled and/or led.Only in the mode of example, the drill collar that the pressure of the drill is provided can be the cylinder with non-homogeneous distribution of weight.In certain aspects, cylindrical drill collar can rotate to change non-homogeneous weight/mass and distribute with respect to the profile of well, to provide to the expectation control of well system and/or to the guiding of well system.

In some embodiments of the invention, replace gauge stretchable sheet, drill collar and/or like or with described gauge stretchable sheet, drill collar and/or like, drill string can be formed and be used for control and the unsettled interaction of inner surface.For example, Bottom Hole Assembly (BHA) 95 can be formed asymmetrical, have asymmetrical flexibility and/or a similar structures.In addition, according to some embodiments of the present invention, drill bit 97 can be asymmetric, have asymmetric flexibility, have non-homogeneous drilling characteristic and/or similar characteristics.In addition, well system can be configured to well system increases unsteady motion during drilling process.Simulation, experiment and/or similar approach can be used to design the well system of the unsteady motion with increase.The position of the gear wheel on the drill bit 97, gear wheel operating parameter can be used to provide the unsteady motion of increase.In some embodiments of the invention, well system can be equipped with flexible/flexible coupler, bent sub and/or can be used to increase the unstable phase mutual effect, improves like (not shown) to the control of well system by unstable phase mutual effect and/or similar item.

Fig. 5 provides according to an embodiment of the invention, be used for well system is led with the schematic diagram of the repeat radial motion actuator of directed drilling eye.In an embodiment of the present invention, well system can comprise drill string 140, and described drill string can comprise Bottom Hole Assembly (BHA) 95 again, and well system can be configured for well is drilled through earth formation.

In certain embodiments, radial motion generator 150 can be connected to drill string 140.Radial motion generator 150 can be configured to make Bottom Hole Assembly (BHA) 95 to generate radial motion in well; Wherein radial motion any motion that can be Bottom Hole Assembly (BHA) 95 point to towards the inwall of well away from the central axis of well.Radial motion generator 150 can comprise mechanical vibrator, sonic wave vibrator and/or can make Bottom Hole Assembly (BHA) 95 produce the similar device of repeat radial motion (for example, vibration).Radial motion generator 150 can be according to the physical characteristic adjustment of drill string 140 and/or Bottom Hole Assembly (BHA) 95 to be used to increase the radial motion that is produced.

In an embodiment of the present invention, the interaction between the inner surface of Bottom Hole Assembly (BHA) 95 and well can be produced, improve, changes and/or carried out similar action by radial motion generator 150.Radial motion generator 150 can be used for by the interaction between the inner surface that produces, applies, changes Bottom Hole Assembly (BHA) and well and/or carry out similar action and come drill string 140 is led.By drill string 140 is led, the well of creeping into by drill string 140 can be directed and creep into.Processor 155 can be used to control radial motion generator 150 and interact to produce between Bottom Hole Assembly (BHA) 95 and inner surface, thereby is used for along the direction of expectation drill string 140 being led.

In some embodiments of the invention, radial motion generator 150 can be used in combination with produce interactional other method of inhomogeneous instability between the inner surface of well system and the well of being crept into, and example as described in this manual.In such an embodiment, radial motion generator 150 can be used to increase or suppress the unsteady motion of drill string, with the effect and/or the control unstable phase mutual effect controller of increase/inhibition unstable phase mutual effect controller.Like this, unstable phase mutual effect controller can be as the controller/manager of unstable phase mutual effect controller, and itself can by processor control be used for to well system control/lead and/or increase/suppress the non-homogeneous unsteady motion interaction between the inner surface of unstable phase mutual effect controller and well.

Fig. 6 A and Fig. 6 B show according to an embodiment of the invention, are used for optionally characterizing the inner surface of well so that drilling assembly is led with the system of directed drilling eye.In drilling process, drill string 160 can be used for well is drilled through earth formation.Drill string 160 can comprise Bottom Hole Assembly (BHA) 165 and coupling 170, and described coupling can connect the equipment at Bottom Hole Assembly (BHA) 165 and ground location or close described ground location place.Bottom Hole Assembly (BHA) can comprise drill bit 173, and described drill bit can comprise a plurality of teeth 174 of the well that the rock that is used for scraping/smash earth formation is being crept into generation/extension.

During drilling process, the shape of the inner surface of the well of being crept into can be regular a little, and can be limited by the external diameter of drill bit 173.Usually, the shape of inner surface is circular a little.The characteristic of the different piece of earth formation can produce inner surface in irregular shape.In Fig. 6 A, according to embodiments of the invention, building mortion 180 interacts with change/formation inner surface with inner surface.Building mortion 180 can comprise the fluid injection system that is used to spray a fluid on the inner surface, be configured for side direction creeps into the drill bit in the inner surface, the scraper that is used for the scraping inner surface and/or similar device.

In an embodiment of the present invention, building mortion 180 can be used to change the profile of inner surface to be used to control the interaction between Bottom Hole Assembly (BHA) 165 and the inner surface.In certain aspects, gauge stretchable sheet 185 can be connected with Bottom Hole Assembly (BHA) 165 near drill bit 173, and can be configured to interacting with inner surface by during the well system drilling well eye.Under the uniform relatively situation of inner surface, the interaction at random that is produced by the radial motion of Bottom Hole Assembly (BHA) 165 during drilling process between gauge stretchable sheet 185 and the inner surface can be uniformly on an average, and can not influence drilling direction.In an embodiment of the present invention, building mortion 180 can form the described inner surface of profile/formation of inner surface with the interaction between control gauge stretchable sheet 185 and the inner surface.In aspect more of the present invention, Bottom Hole Assembly (BHA) 165 can not comprise gauge stretchable sheet 185, and interaction can be directly between Bottom Hole Assembly (BHA) 165 and inner surface.

In an embodiment of the present invention, by the interaction between control gauge stretchable sheet 185 and the inner surface, can lead to well system.In certain aspects, it is static over the ground that building mortion 180 can keep during the guiding process, to be used for can moving/accurately selecting when rotating when the parts of drill string 140 and/or drill string 140 zone of the inner surface that will pass through building mortion 180 formation during drilling process in well.

Building mortion 180 can comprise the gauge cutter that is installed in drill bit and the water jet between the gauge stretchable sheet.Water jet or similar item can be used to excavate the earth formation of gauge stretchable sheet front, to generate the gap that is used for according to embodiments of the invention well system being vibrated guiding between inner surface and gauge stretchable sheet.In other embodiments, electronic pulse system can be installed in gauge stretchable sheet front, and the part that can be used for softening inner surface is smashed the material of this part to allow the gauge stretchable sheet, thereby is generated the gap that is used for according to an embodiment of the invention well system being vibrated guiding.In other embodiments, electronic pulse system can be used for directly generating the gap.

In Fig. 6 B, drill bit 173 can be configured to the well of the selective non-homogeneous inner surface of drilling tool.In certain aspects, the tooth 190 of drill bit 173 can be configured to optionally be activated, so that the profile on the inner surface to be provided.In others, different technology can be used to control drill bit 173 optionally to form inner surface.Can optionally be placed on profile, the shape of the inner surface of groove, groove or similar portions in the inner surface by control, the interaction that can control the radial motion that during the creeping into of well, produces by Bottom Hole Assembly (BHA) 165 between inner surface and the Bottom Hole Assembly (BHA) 165 and produce, and therefore can also control drilling direction.

Fig. 7 A is according to an embodiment of the invention, is used for well system is led with the indicative flowchart of the method for directed drilling eye.In step 200, well system can be used to drill through one section well of earth formation.Well system can comprise the drill string that is connected to ground installation or similar devices.Drill string itself can comprise Bottom Hole Assembly (BHA), and described Bottom Hole Assembly (BHA) comprises the drill bit that is used to the borehole segments that contacts earth formation and drilled through earth formation.Bottom Hole Assembly (BHA) can be passed through drilling rod, sleeve pipe, flexible pipe or similar pipe and be connected with ground installation.Drill bit can be supplied with power by top-drive device, rotating disk, motor, drilling fluid and/or similar device.During drilling process, drill string can be subjected to random motion in well, and wherein random motion can comprise the radial vibration that makes drill string repeat to contact the inner surface of well during drilling process.The interaction that is produced by radial vibration between drill string and the inner surface can major part results from the place, bottom of well, at place, described bottom, can interact between Bottom Hole Assembly (BHA) and inner surface.

In step 210, the oscillating mode between drill string and the inner surface interacts can be controlled.In some embodiments of the invention, can be at the bottom of well control dynamic interaction.In some embodiments of the invention, it is uneven can using some devices in the bottom of well so that the oscillating mode between Bottom Hole Assembly (BHA) and the inner surface interacts.In such an embodiment, the interactional step of oscillating mode between control drill string and the inner surface can comprise: interact in a plurality of positions inhibition of the circumferencial direction that centers on inner surface and/or the oscillating mode that strengthens between Bottom Hole Assembly (BHA) and the inner surface.Along with well is crept into, can keep or change a plurality of positions around the circumferencial direction of inner surface to interactional inhibition of the oscillating mode between Bottom Hole Assembly (BHA) and the inner surface and/or enhancing.In certain aspects, multiple arrangement can be used for producing INHOMOGENEOUS INTERACTION between Bottom Hole Assembly (BHA) and inner surface.

In an embodiment of the present invention, can in step 212, use the interaction element to be used to control dynamic interaction.The interaction element can be the independent component such as drill collar, gauge stretchable sheet assembly, cylinder or other element that can be connected with drill string, and in certain aspects, Bottom Hole Assembly (BHA) can be the part of drill string, for example, and the part of Bottom Hole Assembly (BHA) or similar item.The interaction element can be configured to provide the interaction element and the inner surface of the well of being crept between interact uniformly.

Usually, the well of being crept into is the well with substantial cylindrical inner surface in the earth formation.Therefore, in certain aspects, the interaction element can comprise that the center that has with respect to drill string and/or well is the element of non-homogeneous profile.Only in the mode of example, the interaction element can comprise the camcylinder that is connected with Bottom Hole Assembly (BHA); Wherein, when being connected with Bottom Hole Assembly (BHA), the central axis of camcylinder not with the central axes of Bottom Hole Assembly (BHA).In another example, the interaction element can comprise a series of stretchable sheets, described stretchable sheet is around the Bottom Hole Assembly (BHA) setting, and be configured to the cylindrical form interior surface of contact well during drilling process, wherein, at least one in the stretchable sheet is configured to compare with other stretchable sheet from Bottom Hole Assembly (BHA) and stretches out still less or more length.

In other embodiments, the interaction element can comprise the element with non-homogeneous flexibility.Only in the mode of example, flexible member can comprise the element with certain flexibility, and the part of described element has with respect to certain flexibility of this element remainder to be increased or reduces flexibility, and be configured such that at least a portion of increasing the flexibility district or reducing at least a portion in flexibility district and the element with certain flexibility each can contact cylindrical form interior surface owing to the dynamic motion of Bottom Hole Assembly (BHA) during drilling process.In some embodiments of the invention, actuator can be used to change the feature of interaction element, with from the inner surface of well with the interactional element of even mode to activating the interaction element with non-homogeneous mode and the interactional element of inner surface.

In some embodiments of the invention, the interaction element, no matter be that element and/or the element with non-homogeneous section, non-homogeneous flexibility can be configured to pressure is applied to inner surface or be pushed against on the inner surface, and in fact described interaction element can be passive and since during drilling process drill string dynamic motion and interact with inner surface.For example, the interaction element can comprise from the outward extending extendible member of drill string.In certain aspects, can power be applied on the inner surface, but for simple and economical reason, power can only be little in fact that promptly, power is less than about 1kN by extendible member.

In some embodiments of the invention, the interaction element can be configured to not extend beyond drill bit gear wheel profile and/or be arranged in the described profile by integral body.In other embodiments, the interaction element can have the part of the profile that extends beyond drill bit at least.In aspect more of the present invention, the interaction element can be outside the profile of drill bit extends in 1 millimeter to tens millimeters the scope, and this expanded range is used for well system is led/controls.

In the element that wherein interacts of the present invention comprised aspect some of one or more extended elements, one or more extended elements can extend with profile that extends not more than gear wheel and/or drill bit and/or whole being arranged in the profile of described gear wheel and/or drill bit.In others, one or more extended elements can extend the profile that makes at least a portion of one or more extended elements extend beyond gear wheel and/or drill bit.In some embodiments of the invention, can provide guiding by the profile that makes one or more extended elements in the 1-10mm scope, extend beyond gear wheel and/or drill bit to well system.In such an embodiment, with use reaction force, push hard and lean against that to be used to the directed drilling system that leads on the borehole wall different, can only use/need a spot of power and/or minimum underground equipment to activate and/or to keep extended element in expanded range above the expectation of the profile of gear wheel and/or drill bit.

In aspect using some of multiple arrangement, the combination of device can be configured to provide drill string and the interaction heterogeneous between the inner surface of drill string along the circumferential direction, and in this structure, the mode that can avoid multiple arrangement and drill string with a device influence of another device to be cancelled in the influence of dynamic interaction is connected.The device that can be used to control dynamic interaction can comprise together with other device: gauge stretchable sheet, drill collar, stabilizer and/or be arranged in other device on the Bottom Hole Assembly (BHA) in the mode of decentraction; Gauge stretchable sheet, drill collar, stabilizer and/or can be configured to along the circumferential direction have the similar device of non-homogeneous compression coefficient; Be used to change the device of the profile/shape/profile of inner surface; Be configured to get out the drill bit of well with irregular inner surface; And/or similar device.

In step 220, can interact by the oscillating mode between the inner surface of control drill string and well well system is led.In an embodiment of the present invention, the device that is used to control the dynamic interaction between the inner surface of drill string and well can optionally be positioned in the well, so that dynamic interaction leads to well system.Therein in the well system that at least a portion of drill string is rotated during drilling process, device can keep static over the ground and lead being used in well.In some embodiments of the invention, before boring one section well, the device that is used to control the dynamic interaction between the inner surface of drill string and well optionally can be positioned at drill string, so that the guiding that well system is expected to be provided.In certain aspects, before boring another section well, can reorientate the device of the dynamic interaction between the inner surface that is used to control drill string and well.For example the actuator of cam or similar device is used for changing the embodiment of characteristic of the device of the dynamic interaction between the inner surface that is used to control drill string and well therein, during drilling process, can optionally locate and/or reorientate cam, rather than optionally locate and/or reorientate the device that is used to control dynamic interaction.

In some embodiments of the invention, control is used to control the device in position, orientation well in, position on drill string and/or the orientation of device in well of the dynamic interaction between the inner surface of drill string and well, and/or be used for the dynamic interaction between the inner surface of actuation control drill string and well device device (for example, cam or similar device), can be used to move the device of the dynamic interaction between the inner surface of control drill string and well during the drilling process.

In step 230, well system is led with the direction drilling well eye along expectation.In an embodiment of the present invention, can be identified for direction with one section drilled well expectation, and the device that is used to control dynamic interaction can be positioned in the well and/or on the drill string so that well system is led, thereby bore one section well along the direction of expectation.In certain aspects, processor can be controlled position, orientation and/or the similar parameters of the device that is used for the dynamic interaction on control well intraocular and/or the drill string, makes to bore one section drilled well along the direction of expectation.In certain embodiments, can by processor processing from be arranged on sensing data on the drill string, from the data that are arranged on the sensor in the well, geological data and/or class likelihood data, the drilling direction of thinking expectation is identified for controlling the location/position of the device of dynamic interaction.

Fig. 7 B is according to an embodiment of the invention, is used for controlling the indicative flowchart that is used in the method for the well system of earth formation drilling well eye.In step 240, comprise that the drill string that is configured to drilling well eye in earth formation and the well system of drill bit can be used to bore one section well.In step 250, data that can sensing operation during drilling process about drill string and/or drill bit.Described data can comprise the parameter such as the rotating speed of the pressure of the drill, well system, hook load, moment of torsion and/or similar parameters.In addition, can be from the stratum and/or the similar local image data of well, ground installation, encirclement well, and described data can be the inputs about intervention/drilling process of implementing maybe will implement in drilling process.For example, can determine pressure and/or temperature in well and the stratum, can obtain geological data, can discern property of drilling fluid and/or similar performance by well and/or stratum.

In step 260, can handle about the sense data of well system and/or about the data and/or the class likelihood data of the condition in the earth formation and/or the well of being crept into.In fact it can be conclusive handling/at random, and described processing can be discerned the current of well system and/or in the future potential state.For example, can condition for identification and/or stopping and/or the condition of similar performance and/or potential well system condition such as the invalid performance of drill bit, drill bit.

In some embodiments of the invention, the processor of reception sense data can be used to handle to the interactional control of the unsteady motion between the inner surface of well system and well.For example, magnetometer, hydrometer, accelerometer, free gyroscope system and/or similar device can be determined amplitude, frequency, speed, acceleration and/or the similar parameters of well system, so that the understanding to the unsteady motion of well system to be provided.The data of autobiography sensor send to processor in the future, so that handle, and the value that is used for the unsteady motion of well system can be shown, controlling the unstable interactional control system use of drill string, processed with other data from earth formation, well and/or similar place, is used to control the unstable interactional control system of drill string and/or similar device with manipulation.Only, can realize the communication of sense data by telemetry system, optical fiber, wired drill pipe, steel wire flexible pipe, radio communication and/or similar fashion to processor in the mode of example.

In step 270, can control drill string and the inner surface of the well of being crept between oscillating mode interact.The profile of gear wheel that can be by the change/manipulation/part of change Bottom Hole Assembly (BHA), the part of drill string, drill bit, the inner surface of well or the contact characteristic of similar item provide the interactional control between the inner surface of drill string and well.Contact characteristic can be with the gear wheel of the part of the external surface of the part of Bottom Hole Assembly (BHA), drill string, drill bit and/or can contact the feature that the similar item of the inner surface of well is associated during drilling process.Profile/shape that contact characteristic can comprise external surface (promptly, can comprise eccentric shape around the external surface of the central axis of well system, Bottom Hole Assembly (BHA), drill bit and/or like, the big and/or less part of size of size that can comprise external surface), can comprise non-homogeneous flexibility and/or similar item around external surface.

In step 280, the controlled oscillating mode between the inner surface of drill string and well interacts and can be used to control the operation/function of well system.For example, when the rotation buzz of the drill bit that can detect or predict well system, the oscillating mode that can control between the inner surface of drill string and well interacts to eliminate, to reduce and/or to prevent to rotate buzz.In an embodiment of the present invention, the function of well system can be determined, and the function of described well system can be changed by the interaction between the inner surface of control drill string and well by the data of handling.Like this, embodiments of the invention can be provided for controlling the new system and method for the operation of well system.

In order to be aware and understand, described the present invention in detail.Yet what will be familiar with is can implement some changes and modification in the protection domain of claims.In addition, in the above description, for purposes of illustration, the whole bag of tricks and/or process have been described with concrete order.Should be familiar with in optional embodiment, can carry out described method and/or process with the order that is different from described order.

Claims

1. method of utilizing the dynamic motion of well system in the well of in earth formation, being crept into or coring to control described well system by described well system, described well system comprises drill bit and drill string, said method comprising the steps of:

Be controlled at the dynamic interaction between the inner surface of the part of described well system and described well; And

The controlled dynamic interaction of use between the inner surface of the described part of described well system and described well is to control described well system.

2. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

It is heterogeneous making the described part of described well system and the described dynamic interaction between the described inner surface.

3. method according to claim 1, wherein, the step of the dynamic interaction between the part of the described well system of described control and the inner surface of described well comprises:

A described part and the described dynamic interaction between the described inner surface of described well system are along the circumferential direction changed around the described part of described well system.

4. method according to claim 1, further comprising the steps of:

Keep the described part of described well system static over the ground in described well in the operating period of described well system.

5. method according to claim 1, wherein, the controlled dynamic interaction of described use between the inner surface of at least a portion of described well system and described well comprises with the step of controlling described well system:

Use described dynamic interaction so that described well system is led.

6. method according to claim 1, wherein, the controlled dynamic interaction of described use between the inner surface of the part of described well system and described well comprises with the step of controlling described well system:

Use described dynamic interaction with the interaction between the bottom of controlling described drill bit and described well.

7. method according to claim 1, wherein, the controlled dynamic interaction of described use between the inner surface of the part of described well system and described well comprises with the step of controlling described well system:

Use described dynamic interaction to improve the performance of drill bit.

8. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

It is asymmetric making the described part of described well system.

9. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Make the described part of described well system comprise the quality of non-uniform Distribution.

10. method according to claim 9, wherein, the quality of described non-uniform Distribution along the circumferential direction changes around the described part of described well system.

11. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Make the described part of described well system have non-homogeneous flexibility.

12. method according to claim 11, wherein, described non-homogeneous flexibility along the circumferential direction changes around the described part of described well system.

13. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of described at least a portion that is controlled at described well system and described well comprises:

Connect contact element and described well system, and use described contact element to control described dynamic interaction.

14. method according to claim 13 is further comprising the steps of:

Keep described contact element static over the ground in described well in the operating period of described well system.

15. method according to claim 13, wherein, described contact element is configured to produce the non-homogeneous dynamic interaction with described inner surface.

16. method according to claim 13, wherein, the shape of described contact element is asymmetric.

17. method according to claim 13, wherein, described contact element has non-homogeneous flexibility.

18. method according to claim 13, wherein, described contact element comprises the part of the flexibility with increase or the part of the flexibility that reduces.

19. method according to claim 13, wherein, described part or described part with the flexibility that reduces with flexibility of increase is positioned on the described well system, is used for along the direction of expectation described well system being led.

20. method according to claim 13 is further comprising the steps of:

Described contact element is positioned in the described well, so that described well system produces the function of expectation.

21. method according to claim 20, wherein, the function of described expectation is that described well system is led.

22. method according to claim 13, wherein, described contact element is connected with Bottom Hole Assembly (BHA).

23. method according to claim 13, wherein, described contact element is connected with described drill bit.

24. method according to claim 13, wherein, described contact element is connected with described well system, so that described contact element repeats to contact with the inner surface of described well during drilling process.

25. method according to claim 13, wherein, described contact element is configured such that the described dynamic interaction between the inner surface of described contact element and described well along the circumferential direction changes around described contact element.

26. method according to claim 13, wherein, described contact element comprises cylinder, and described cylinder is connected with described Bottom Hole Assembly (BHA) in the mode of off-centre.

27. method according to claim 13, wherein, described contact element can move on described Bottom Hole Assembly (BHA).

28. method according to claim 27, wherein, described contact element can rotate on described Bottom Hole Assembly (BHA).

29. method according to claim 13, wherein, described contact element comprises extended element, and described extended element can stretch out towards described inner surface from described contact element.

30. method according to claim 29, wherein, described extended element can be applied to power described inner surface, and described power is applied to described inner surface to control described dynamic interaction.

31. method according to claim 29, wherein, the power that is applied to described inner surface is less than 1kN.

32. method according to claim 13, wherein, described contact element is connected with described well system, so that described contact element is arranged in the drilling profile of described drill bit.

33. method according to claim 13 is further comprising the steps of:

During drilling process, change the dynamic motion of described Bottom Hole Assembly (BHA).

34. method according to claim 33, wherein, the described step that changes the dynamic motion of described Bottom Hole Assembly (BHA) during drilling process comprises:

Drive described well system in described well, to carry out radial motion.

35. method according to claim 13, wherein, described contact element is connected with described well system, so that at least a portion of described contact element is arranged on outside the drilling profile of described drill bit.

36. method according to claim 1 is further comprising the steps of:

Use processor to handle control to described dynamic interaction.

37. method according to claim 36, wherein, described processor real-time is handled the control to described dynamic interaction.

38. method according to claim 36 further may further comprise the steps:

Use described processor so that the active position of described contact element on described Bottom Hole Assembly (BHA) handled, so that the control to described well system expectation to be provided; And

Described contact element is positioned at described active position place.

39. method according to claim 36 further may further comprise the steps:

Sense data; And

Described sense data is communicated by letter to described processor.

40. according to the described method of claim 37, wherein, described sense data comprises performance data, and wherein said performance data comprises the data about the function of at least one function element of described well system.

41. according to the described method of claim 37, wherein, described sense data comprises the data about the dynamic motion of described well system in described well.

42. according to the described method of claim 37, wherein, described sense data comprises the geological data about the earth formation that surrounds described well.

43. according to the described method of claim 37, wherein, described sense data comprises wellbore data, and wherein said wellbore data comprises the data about the condition in the described well.

44. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Use with the non-gauge stretchable sheet that is connected with one heart of described well system or drill collar to interact with dynamical fashion with described inner surface.

45. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Use asymmetric drill collar or asymmetric gauge stretchable sheet to interact with dynamical fashion with described inner surface.

46. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Use flexible drill collar or flexible gauge stretchable sheet to interact with dynamical fashion with described inner surface, wherein, described flexible drill collar or described flexible gauge stretchable sheet are configured to provide the external surface non-homogeneous flexibility along the circumferential direction around described flexible drill collar or described flexible gauge stretchable sheet.

47. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Use flexible drill collar or flexible gauge stretchable sheet to interact with dynamical fashion with described inner surface, wherein, described flexible drill collar or described flexible gauge stretchable sheet are constructed with the Mass Distribution that along the circumferential direction changes around described flexible drill collar or described flexible gauge stretchable sheet.

48. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Control the profile of described inner surface.

49. according to the described method of claim 48, wherein, asymmetric drill bit is used to control the profile of the inner surface of described well.

50. according to the described method of claim 48, wherein, in injection apparatus, electrical pulse device, secondary drill bit and the extended member one is used to control the profile of the inner surface of described well.

51. method according to claim 1, wherein, the step of the dynamic interaction between the inner surface of a described part that is controlled at described well system and described well comprises:

Control the dynamic motion of described well system.

52. according to the described method of claim 51, wherein, the step of the dynamic motion of the described well system of described control comprises:

It is the dynamic motion of expectation that described well system is driven.

53. one kind be used to be controlled at well system during the drilling process and by well system crept into or the inner surface of the well of coring between dynamic interaction to control the operated system of described well system, comprising:

Be used to be controlled at the device of the dynamic interaction between the inner surface of the part of described well system and described well, wherein said dynamic interaction is produced by the dynamic motion of described well system during described drilling process.

54. according to the described system of claim 53, wherein, the device construction of the dynamic interaction between the inner surface of a described part that is used to be controlled at described well system and described well becomes to make that described dynamic interaction is uneven.

55. according to the described system of claim 53, wherein, the device construction of the dynamic interaction between the inner surface of a described part that is used to be controlled at described well system and described well becomes to make described dynamic interaction to change at the diverse location place of described well system, thereby makes in the described diverse location at least one because dynamic motion of described well system interactional mode and interaction of described inner surface to be different from other position and described inner surface.

56. according to the described system of claim 53, wherein, the device construction of the dynamic interaction between the inner surface of a described part that is used to be controlled at described well system and described well becomes to make described dynamic interaction along the circumferential direction to change around described well system.

57. according to the described system of claim 53, wherein, the device construction of the dynamic interaction between the inner surface of a described part that is used to be controlled at described well system and described well becomes to be used for described well system is led.

57. according to the described system of claim 53, wherein, the device construction of the dynamic interaction between the inner surface of a described part that is used to be controlled at described well system and described well becomes to be used to control the operation of described well system.

59., also comprise the device of the operating characteristics that is used for definite described well system according to the described system of claim 53.

60., also comprise the device of operation of the device of the described dynamic interaction between the inner surface that is used to handle the part that is controlled at described well system and described well according to the described system of claim 53.

61., also comprise the device that is used for determining the position of described well system in earth formation according to the described system of claim 53.

62., also comprise the device of the characteristic that is used for definite earth formation according to the described system of claim 53.

63. one kind is used for being controlled at earth formation drilling well eye or to the core system of well system of usefulness of described well, comprises:

Described well system, wherein, described well system comprises drill string, Bottom Hole Assembly (BHA) and drill bit, and the described well of wherein being bored by described well system is limited by the inner surface of the bottom of inwall that comprises described well and described well; With

The interaction element, described interaction element is connected with described well system, and is configured to control the dynamic interaction between described well system and the described inner surface.

64. according to the described system of claim 63, wherein, described interaction element is controlled described dynamic interaction so that described well system is led.

65. according to the described system of claim 63, wherein, described interaction element is controlled described dynamic interaction to control the performance of described drill bit.

66. according to the described system of claim 63, wherein, described interaction element is connected with described Bottom Hole Assembly (BHA).

67. according to the described system of claim 63, wherein, described interaction element is connected with described well system in the position of the described drill bit of distance less than 20 feet.

68. according to the described system of claim 66, wherein, described interaction element is connected with described Bottom Hole Assembly (BHA), so that the outline of described interaction element and described Bottom Hole Assembly (BHA) is asymmetric.

69. according to the described system of claim 66, wherein, described interaction element is flexible, and wherein said interaction element is connected with described Bottom Hole Assembly (BHA), so that the flex profile of described interaction element and described Bottom Hole Assembly (BHA) along the circumferential direction changes around described interaction element and described Bottom Hole Assembly (BHA).

70. according to the described system of claim 66, wherein, described interaction element is connected with described Bottom Hole Assembly (BHA), so that described interaction element and described Bottom Hole Assembly (BHA) have non-homogeneous distribution of weight.

71. according to the described system of claim 63, also comprise actuator, described actuator configurations becomes to make described interaction element to move on described well system.

72. according to the described system of claim 71, wherein, described actuator configurations becomes described interaction element is rotated on described well system.

73. according to the described system of claim 63, also comprise processor, described processor is connected with described actuator, and is configured to control described actuator so that described interaction element is positioned on the described well system.

74. according to the described system of claim 73, also comprise sensor, described sensor arrangement becomes gives described processor with data communication.

75. according to the described system of claim 74, wherein, described sensor comprises a kind of in geophysics sensor, accelerometer, gyrosensor, temperature pick up, position sensor, pressure sensor, radial motion sensor and the wear sensor.

76. according to the described system of claim 73, also comprise driver, described driver constructions becomes to drive described well system to carry out radial motion in described well.

77. one kind is used to control the system that is configured for the well system of drilling well eye in earth formation, comprises:

Described well system, wherein, described well system comprises drill bit, Bottom Hole Assembly (BHA) and drill string; With

Cylinder, described cylinder is connected with Bottom Hole Assembly (BHA) is eccentric, so that the dynamic interaction between the inner surface of described cylinder and described well is uneven.

78. one kind is used to control the system that is configured for the well system of drilling well eye in earth formation, comprises:

Interaction element, described interaction element be around described Bottom Hole Assembly (BHA) setting, and be configured to during the process of boring described well to interact with dynamical fashion with the inner surface of described well, and wherein, described interaction element is asymmetric.

79. one kind is used to control the system that is formed at the well system of drilling well eye usefulness in the earth formation, comprises:

A plurality of interaction elements, described a plurality of interaction element is connected with the external surface of described Bottom Hole Assembly (BHA), and be configured to be controlled at the dynamic interaction between the described Bottom Hole Assembly (BHA) and described inner surface during the described drilling process, wherein, described a plurality of interaction element is configured such that described dynamic interaction changing with the interactional part of described inner surface according to described well system.

80. one kind is used to control the system that is formed at the well system of drilling well eye in the earth formation, comprises:

Vibration source, described vibration source is connected with described well system, and is configured at the described well system of described well internal vibration, with the dynamic interaction between the inner surface that is used to control described well system and described well.

81. one kind is used to control the system that is configured for the well system of drilling well eye in earth formation, comprises:

Described well system, wherein, described well system comprises drill bit and shaped portion, and wherein said shaped portion comprises the uneven part of dynamic interaction between the inner surface described well system, that be configured such that described well system and described well.

82. a system that is used to handle unstable phase mutual effect controller, described unstable phase mutual effect controller is used to be controlled at the well system of drilling well eye usefulness in the earth formation, and the described system that is used to handle unstable phase mutual effect controller comprises:

Described well system, wherein, described well system comprises drill bit and drill string;

Described unstable phase mutual effect controller, wherein, described unstable phase mutual effect controller is configured to control described well system by the unstable phase mutual effect between the inner surface of controlling described well system and described well; With

Processor, described processor is connected with described unstable phase mutual effect controller, and is configured to handle the operation of described unstable phase mutual effect controller.

83. 2 described systems according to Claim 8 also comprise:

Sensor, described sensor is connected with described well system, and is configured to the feature of the described well system of sensing during drilling process, and described sensed characteristic is communicated by letter to described processor.

84. 2 described systems according to Claim 8, wherein, described sensor arrangement becomes the unsteady motion of the described well system of sensing in described well.

85. 2 described systems according to Claim 8, wherein, described sensor arrangement becomes the operating characteristics of the described drill bit of sensing.

86. method that is configured to be controlled at the dynamic interaction controller of the operation of the well system of drilling well eye usefulness in the earth formation, described dynamic interaction controller is configured to control the dynamic interaction between the inner surface of described well system and described well, said method comprising the steps of:

Determine the operation of described well system expectation; And

Construct described dynamic interaction controller so that the operation of described expectation to be provided.

87. 6 described methods according to Claim 8, wherein, the described dynamic interaction controller of described structure comprises with the step of operation that described expectation is provided:

Determine on described well system the position with the location contact element, wherein, described contact element be configured to since described well system in described well dynamic motion and contact with described inner surface, and wherein said contact element is configured such that the dynamic interaction between described contact element and the described inner surface partly changes with described inner surface interaction according to which of described contact element.

88. 4 described methods according to Claim 8, wherein, the described dynamic interaction controller of described structure comprises with the step of operation that described expectation is provided: determine the physical characteristic of contact element, wherein:

Described contact element be configured to since described well system in described well dynamic motion and contact with described inner surface; And

Described contact element is configured such that the dynamic interaction between described contact element and the described inner surface according to which part of described contact element interacts with described inner surface to be changed.