CN102913131B - A kind of dynamically guiding type rotary steering drilling tool - Google Patents
A kind of dynamically guiding type rotary steering drilling tool Download PDFInfo
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- CN102913131B CN102913131B CN201210402593.5A CN201210402593A CN102913131B CN 102913131 B CN102913131 B CN 102913131B CN 201210402593 A CN201210402593 A CN 201210402593A CN 102913131 B CN102913131 B CN 102913131B
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Abstract
A kind of dynamically guiding type rotary steering drilling tool, including rotating urceolus, stabilized platform, guide offset mechanism, load transfer mechanism, torque-transmitting mechanisms, upper backup pad, lower supporting plate, auger spindle, drill bit, seal bellows, auger spindle connects bearing and conducting slip ring, it is characterized in that: rotate urceolus and directly apply the pressure of the drill and moment of torsion to drill bit, drive auger spindle, drill bit rotates jointly, hole angle to be controlled and azimuth information is calculated by computing unit according to preset well track parameter or ground monitoring system telecommand, use the geostationary control method of stabilized platform, and combine hydraulic drive piston guide offset mechanical work principle, realize biasing mechanism structure bent angle, particularly hole angle and azimuthal accurate control.
Description
Technical field
The present invention relates to oil and gas well drilling technical field, particularly to the dynamic directional type of one
Rotary steering drilling tool.
Background technology
Along with both at home and abroad most oil gas fields subsequently enter mid-later development phase, Reservoir Development difficulty by
Gradually strengthening, drilling strata characteristic is the most complicated, in addition offshore oil, Offshore Oil gas field, coal
The probing successively in layer gas field, to spudders such as conventional extended reach well, horizontal well and multilateral wells
Technology is had higher requirement.Rotary steerable drilling technology is development in recent years
One most advanced and sophisticated closed loop automatic well drill new technique, its appearance is a matter of world well technology
Leap.
Down-hole rotary steering drilling tool system is divided into pushing type according to its guidance mode and refers to
To formula, quiescent biasing formula and dynamic bias formula can be divided into again according to the working method of biasing mechanism,
In terms of applicable cases, the deflecting ability of directional type rotary steerable drilling system does not relies on and well
The contact of wall, be more applicable for big hole diameter or out-of-round oversized hole, soft formation, dead-soft bottom and
The unsettled sidetracking of bore hole of interlayer etc. so that creep into dog-leg severity and lateral drilling deflecting ability greatly carries
Height, contributes to controlling well the optimum position at oil reservoir, improves wellbore quality, it is ensured that well
Lower safety.And wherein dynamic directional type rotary steerable drilling system is especially due to its BHA
Fully rotating, get out well smooth, regular, and rate of penetration can be effectively improved, increase moment of torsion,
Regulation the pressure of the drill, gives full play to bit performance, by oilfield drilling companies many in world wide
Welcome.
World-renowned petroleum technology service company Baker Hughes, Schlumberger,
Halliburton etc. have been developed over respective rotary steering drilling tool system.Domestic west
Peace University of Petroleum, Shengli Oil Field drilling well institute, CNOOC Research Center, China University of Geosciences,
The units such as Southwest Petrol University, Liaohe Oil Field providence petroleum equipment company have also been carried out rotation and have been led
Study to drilling technology, achieve certain achievement in research successively.Generally, rotary steering closes
Ring drilling technology is still in the fast-developing stage, and international competition is the fiercest.Dynamic
Guiding type rotary steering drilling tool system is the high-order of world today's drilling technology development
Section, represents the developing direction of high-precision directional drill well technology.
Chinese patent notification number CN 101586440A, publication date on November 25th, 2009,
(this patent application is also entitled a kind of guiding type rotary steering drilling tool of innovation and creation
Utility model patent mandate, Authorization Notice No.: CN 201450731U, authorized announcement date 2010
On May 12, in), this application case discloses a kind of mechanics of surface spy being independent of stratum
Property, simple in construction, and can accurate and effective control well track directional type rotary steering bore
Well tool system, this system nature is quiescent biasing guiding type rotary steering drilling tool system
Uniting, it is disadvantageous in that when the most described drilling tool works, urceolus does not rotates, and it acts on torsion
Square is less；The guiding of the most described drilling tool is realized by mandrel bending, and this guiding mandrel need to hold
By the alternate stress of high intensity, it is susceptible to fatigue damage.
Technically, dynamic directional type rotary steerable drilling system be collection mechanical, electrical,
Liquid is in the closed loop automatic control system of one, and its deflecting ability does not relies on the contact with the borehole wall,
And all parts are fully rotating as technical characteristics with down-hole.
U.S. Patent number 6,109,372, March 15 1999 applying date, grant date 2000
On August 29, in, the rotary steering that the entitled employing Hydraulic Servo-Loop of innovation and creation controls
Well-drilling tool system (Rotary Steerable Well Drilling System UtilizingHydraulic
Servo-loop), this case discloses a kind of based on dynamic directional type rotary steerable tool, outside it
Cylinder directly drives biasing mechanism and then drives bit, is driven by two groups of X-Y direction hydraulic pressure
Dynamic piston uninterruptedly moves the relative position of biasing mechanism and urceolus when controlling work, to reach
The purpose pointed to, its feature is to need the most known urceolus rotary speed accurately, and servo-actuated
Control the run location of X-Y direction two groups of hydraulic drive piston, hydraulic drive piston displacement with
The simultaneous of urceolus rotating speed controls itself high load capacity work in addition, can increase undoubtedly and be accurately directed to
The difficulty controlled.
U.S. Patent number 6,092,610, February 5 1998 applying date, grant date 2000
On July 25, in, the rotary steering drilling tool system that the entitled active of innovation and creation controls
System and method (Actively Controlled Rotary Steerable System and Method
ForDrilling Wells), this case discloses a kind of dynamically guiding type rotary steering drilling tool system
System, its urceolus drives auger spindle and then drives bit, produces bigger rotation torque, should simultaneously
Case proposes a kind of directional type guiding mechanism based on eccentric shaft, and its structure bent angle can arrive at 0 °
Change between design maximum angle, by ensureing that eccentric shaft geography is static, can constant structure bent angle
Value.Its feature is, when being not required to adjust structure bent angle and need to adjust azimuth, the most broken
Bad eccentric shaft geography resting state, when eccentric shaft turns arrives required orientation, then makes its constant speed anti-
To following the tracks of urceolus rotating speed, this case fails clearly to illustrate eccentric hoop type of drive, nothing in detail simultaneously
Method learns eccentric stiffener details.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of dynamically directional type rotary steering and bore
Well tool and method for designing thereof, it rotates urceolus and directly applies the pressure of the drill and moment of torsion to drill bit, carries
Dynamic auger spindle, drill bit rotate jointly, use simultaneously the geostationary control method of stabilized platform and
In conjunction with hydraulic drive piston guide offset mechanical work principle, it is achieved hole angle and azimuthal essence
Really control.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of dynamically guiding type rotary steering drilling tool, including rotate urceolus, stabilized platform,
Guide offset mechanism, load transfer mechanism, torque-transmitting mechanisms, upper and lower support plate, auger spindle,
Drill bit, conducting slip ring, seal bellows and multiple connection bearing.
Rotating urceolus is the hollow ring body that a wall thickness is thicker, by both drilling rod and MTR or
One drives, for applying bigger the pressure of the drill and moment of torsion to drilling tool.
Stabilized platform is placed in rotation outer barrel, including hollow cylindrical body, connect bearing,
Servomotor and supporting shaft coupling, stabilized platform agent structure is from the up-small and down-big round platform of diameter
Body develops, and upper end is stretched out longer, by being arranged on the lower supporting plate and embedding rotating urceolus
Bearing therein connects fixing, and lower end is the hollow circular cylinder that wall thickness is relatively thin, connects outside bearing
Side closely cooperates with rotating outer tube inner wall, inner side stable connection main platform body, and servomotor is installed
On the upper backup pad rotating urceolus, shaft coupling is used for connecting servomotor and stabilized platform master
Body, according to rotating urceolus rotation situation, driven by servomotor stabilized platform main body constant speed is contrary
Rotate so that it is lower holding is the most static in working order.
Guide offset mechanism is positioned at stabilized platform body interior, by being mutually 120 ° of three installed
Hydraulic drive piston forms, and the central area that hydraulic drive piston is surrounded has an auger spindle to connect
Bearing.It is angular contact bearing that this auger spindle connects bearing, tight with auger spindle top union joint inside it
Close fit, outside is joined directly together with each hydraulic drive piston.Change hydraulic drive piston
Linear motion displacement, will change the structure bent angle of auger spindle.
Load transfer mechanism includes the pressure of the drill bearing ring, elastic washer, sphere thrust ring and sphere rotation
Change, the pressure of the drill bearing ring is " recessed " shape column structure porose in the middle of, and its upper end is placed in
Rotating on outer tube inner wall concave station, lower end connects with the upper cardan cage set of torque-transmitting mechanisms
Touching, directly carrying comes the pressure of the drill on spinning urceolus, elastic washer, sphere thrust ring and sphere
Rotating ring is placed in, inside the pressure of the drill bearing ring, being sequentially connected with, and is installed with auger spindle in load transfer mechanism,
Its upper end is fastenedly connected with interior eccentric hoop bias ducted body by bearing, and middle part is extended with cylinder
In the middle of shape " convex " platform and spherical rotary ring, inner concave connects CN 102913131A description
Touch by page 5 3/6 6, to such an extent as in the future can be further transferred to auger spindle by the pressure of the drill on spinning urceolus
On, and then can be transferred to be installed on the drill bit of auger spindle front end.
Torque-transmitting mechanisms be positioned at rotation urceolus bottom, including upper cardan cage, under universal
Save cage, steel ball, key and be used for protecting two collars of torque-transmitting mechanisms, upper and lower
Universal-joint Rzeppa agent structure is similar to, and is a hollow circular cylinder, is evenly equipped with 8 at inwall
1/4 " concave spherical surface ", it just forms face, the whole world with another 1/2 " concave spherical surface " on auger spindle, interior
It is equipped with high-quality steel ball.Dynamic torque is transferred to by eight " keys " being distributed on around urceolus
Lower cardan cage, then utilizes 8 major diameters " steel ball " to incite somebody to action in the way of sphere-contact
Moment of torsion puts on auger spindle, and then acts on drill bit.
Dynamically the conducting slip ring in guiding type rotary steering drilling tool can not be by stabilized platform work
When making, power supply and control signal are caused on stabilized platform servomotor by the impact of rotation status；
And seal can realize with corrugated tube as very important auger spindle upper and lower side.
Dynamically guiding type rotary steering drilling tool may also include that and is positioned at the brill rotated above urceolus
Quickly, to improve the effect the pressure of the drill rotating urceolus；It is positioned at the MTR rotated above urceolus,
To change the rotation torque rotating urceolus；It is positioned at the turbogenerator rotated above urceolus, is used for
Electric power support is provided for this rotary steerable tool.
For realizing guiding flexibly and smooth working of dynamic guiding type rotary steering drilling tool, this
Invention also provides for that a kind of well track to this instrument is servo-actuated and stable control method, according to well
The feature of track servo antrol, uses the close-loop control scheme containing fuzzy controller,
Change in a big way and load disturbance is to well eliminating drilling parameter to a greater extent
The impact of track；Follow the tracks of preset well track parameter or ground monitoring system telecommand, meter
The information such as rate of penetration, hole angle and azimuth at different well depth that calculate are as control system
Input variable；Consider measurement hole angle deviation, azimuth angle deviation, drilling speed deviation and each
Deviation variation rate, determines the membership function of fuzzy variable and controls rule, designing and stably put down
The servo-actuated fuzzy controller of platform and hole angle, azimuth guiding module fuzzy controllers, improve multi input list
The Fuzzy control system of output, it is achieved to stabilized platform, guide offset mechanism and the control of auger spindle
Requirement processed.Present configuration is compact, reasonable in design, easy to adjust, is dynamically pointed to by it
Rotary drilling mode, can creeping into horizontal well, extended reach well, high angle hole and Multilateral Wells etc.
Process effectively guides, and can increase moment of torsion, regulation the pressure of the drill, improves rate of penetration, fully
Play bit performance, and then improve drilling efficiency.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Fig. 1 is embodiment of the present invention generalized section；
Fig. 2 is embodiment of the present invention hydraulic-driven guide offset structural scheme of mechanism；
Fig. 3 is that the embodiment of the present invention controls circuit diagram；
Fig. 4 is that embodiment of the present invention well track is servo-actuated and stable control method structured flowchart；
Drawing reference numeral: 1 drill bit, 2 inner sleeves, 3 outer sleeves, 4 sphere thrust rings,
5 elastic washers, 6 rotate urceolus, and 7 auger spindles connect bearing, and 8 hydraulic drive piston are straight
Line slide block, 9 lower supporting plates, 10 stabilized platform servomotors, 11 stabilized platform conductions
Slip ring, 12 upper backup pads, 13 control circuit mounting boxs, 14 stabilized platform servomotors
Shaft coupling, the 15 embedded bearings of lower supporting plate, 16 stabilized platform main bodys, 17 stabilized platforms
Connecting bearing, 18 auger spindles, 19 the pressure of the drill bearing rings, 20 spherical rotary rings, on 21
Universal-joint Rzeppa, 22 steel balls, 23 lower cardan cage, 24 seal bellows.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case the most clearly and completely describes.Obviously, the present invention is not limited by following embodiment,
Specific embodiment can be determined according to technical scheme and practical situation.Based on this
Embodiment in invention, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, all should belong to the scope of protection of the invention.
Embodiments provide a kind of down-hole for but not limited to natural petroleum gas field
Dynamically guiding type rotary steering drilling tool, in particular, provides a kind of based on stabilized platform and liquid
Pressure drives the offset guide mechanism of piston.The guidance mode of this instrument is directional type, guide offset
The working method of mechanism is dynamic bias formula.The embodiment of the present invention rotates urceolus and drill string or brill
Lever system is connected, and drill bit is connected with auger spindle；Stabilized platform is driven by motor and makes it rotate with urceolus
Speed is equal in magnitude, in opposite direction, keeps geographical resting state；Hydraulic-driven is had to live inside it
Plug offset guide mechanism, in drilling process, urceolus rotates all the time, and moment of torsion is high with the pressure of the drill
Pass to drill bit to effect；By adjusting the flexible of two groups of hydraulic drive piston in guide offset mechanism
Straight-line displacement, can realize auger spindle centrage and urceolus centrage formed structure bent angle from 0 ° to
Change between design max architecture bent angle value, and then reach to control the purpose of hole angle；By adjusting
Stabilized platform rotates against the angular displacement of urceolus, and auger spindle centrage can be made to point to the four corners of the world
Any control azimuth in the range of 0～360 °.
The embodiment of the present invention also provides for a kind of to this dynamic guiding type rotary steering drilling tool
Well track is servo-actuated and stable control method, specifically includes: according to control structure bent angle, well
Oblique angle and azimuth value, in conjunction with hydraulic drive piston guide offset mechanical work principle, calculate
The straight-line displacement that each hydraulic drive piston need to be run, uses servo rotary control algolithm simultaneously,
After adjusting hole angle and azimuth, holding stabilized platform is the most quiet with offset guide mechanism
Only state, thus reach the purpose dynamically pointed to.Technical scheme, for dynamically pointing to
The research and development of formula rotary steering drilling tool provide theoretical foundation.
In embodiments of the present invention, for the ease of describing, the equal root of relative position relation of each parts
Being described according to the layout of Figure of description, such as upper and lower position relation, to be based on description attached
Scheme each parts layout to determine.
In order to ensure to reach constant guiding and the brill of a direction in the case of urceolus rotates
Effective transmission of pressure moment of torsion, specially requires when Design of Mechanical Structure: 1. power drilling tool drilling speed
It is controlled by urceolus drilling speed, will act at moment of torsion on urceolus and pass to drilling tool；2. guide offset machine
Structure rotates with stabilized platform, and can realize that this drilling speed and urceolus drilling speed be equal in magnitude, direction
On the contrary；3. guide offset mechanism should have hole angle and azimuth control structure flexibly；④
In the case of not affecting power drilling tool drilling speed, it is ensured that high the pressure of the drill, high pulling torque act on drill bit.
Fig. 1 is embodiment of the present invention generalized section.This dynamic directional type rotary steerable drilling work
Tool embodiment include rotate urceolus 6, stabilized platform, guide offset mechanism, load transfer mechanism,
Torque-transmitting mechanisms, upper backup pad 12, lower supporting plate 9, drill bit 1, auger spindle 18, stable flat
Platform conducting slip ring 11, seal bellows 24 and for each rotating parts position connect many
Individual bearing.
Specifically, it is internal that stabilized platform is placed in rotation urceolus 6, stable including hollow cylindrical
Main platform body 16, stabilized platform connect bearing 17, stabilized platform servomotor 10 and supporting
Stabilized platform servomotor shaft coupling 14, stabilized platform main body 16 upper end is by being arranged on rotation
The lower supporting plate 9 of urceolus 6 and lower supporting plate embedded bearing 15 connect fixing, and lower end is by steady
Fixed platform connects bearing 17 and closely cooperates with rotating urceolus 6 inwall, stabilized platform servomotor
10 are arranged on the upper backup pad 12 rotating urceolus 6, upper backup pad 12 and lower supporting plate 9
Rotated on urceolus 6 by interior hexagonal screw threads for fastening, and moving the most together；Stabilized platform is watched
Take motor coupler 14 for stable connection platform servomotor 10 and stabilized platform main body 16,
Stabilized platform servomotor 10 drives stabilized platform main body 16 relative to rotating urceolus 6 constant speed phase
Despining so that it is lower holding is the most static in working order.
Fig. 1 lower half describes the pressure of the drill and the torque-transmitting mechanisms of the embodiment of the present invention.The pressure of the drill
Transmission mechanism includes the pressure of the drill bearing ring 19, elastic washer 5, sphere thrust ring 4 and from top to bottom
Spherical rotary ring 20, the pressure of the drill bearing ring 19 is " recessed " shape column structure porose in the middle of,
Its upper end is placed on rotation urceolus 6 inwall concave station, up to ten thousand with torque-transmitting mechanisms of lower end
Contacting to joint cage set 21, directly carrying carrys out the pressure of the drill of spinning urceolus 6；Elastic washer 5,
It is internal that sphere thrust ring 4 and spherical rotary ring 20 are all sequentially placed into the pressure of the drill bearing ring 19, the pressure of the drill
Being installed with auger spindle 18 in transmission mechanism, its upper end connects bearing 7 by auger spindle and lives with hydraulic-driven
Plug jam connects, and it is middle with spherical rotary ring 20 that middle part is extended with cylinder " convex " platform
Inner concave contacts, to such an extent as to can in the future be further transferred to bore by the pressure of the drill on spinning urceolus 6
On axle 18, and then can be transferred to be installed on the drill bit 1 of auger spindle front end.
Torque-transmitting mechanisms be positioned at rotation urceolus 6 bottom, including upper cardan cage 21,
Lower cardan cage 23, steel ball 22, connecting key 25 and be used for protecting torque-transmitting mechanisms
Inner sleeve 2 and outer sleeve 3, upper cardan cage 21 and lower cardan cage 23 main body
Structure is similar to, and is hollow circular cylinder, is evenly equipped with 8 1/4 " concave spherical surface " at inwall, its
Just form face, the whole world with another 1/2 " concave spherical surface " on auger spindle 6 relevant position, sphere is built-in
There is high-quality steel ball 22.Dynamic torque is transmitted by eight connecting keys 25 being distributed on around urceolus
Supreme universal-joint Rzeppa 21 and lower cardan cage 23, then utilize 8 major diameter steel balls
22 place a torque in auger spindle 18 in the way of sphere-contact, and then act on drill bit 1.
When creeping into, upper drilling string, the pressure of the drill and the power that produce including drill collar, MTR etc. turn
Square all will put on rotation urceolus 6, and overwhelming majority the pressure of the drill therein is by the pressure of the drill bearing ring 19
Pass to elastic washer 5 successively, sphere thrust ring 4 and spherical rotary ring 20, then act on
On auger spindle 18, and fraction the pressure of the drill is also ultimately applied to auger spindle 18 through torque-transmitting mechanisms
On；When creeping into, most longitudinal resistances of drill bit are then passed through auger spindle through spherical rotary by rock
Ring 20, sphere thrust ring 4, elastic washer 5 and the pressure of the drill bearing ring 19 pass to rotate urceolus
6.Dynamic torque is passed to up to ten thousand by being distributed on eight connecting keys 25 rotated around urceolus 6
To joint cage 21 and lower cardan cage 23, major diameter steel ball 22 is then used to connect with sphere
The mode touched can place a torque in auger spindle 6.Have benefited from sphere thrust ring 4 and spherical rotary ring
The sphere-contact of 20, and upper cardan cage 21 and lower cardan cage 23 are with auger spindle 18
Sphere 22 connected mode, can be while the pressure of the drill moment of torsion efficiently transmits, it is achieved clog-free
Rotary steering.
Fig. 2 further describes the hydraulic-driven biasing mechanism guiding principle of the embodiment of the present invention.
It is internal that guide offset mechanism is positioned at stabilized platform main body 16, by being mutually 120 ° of three installed
Hydraulic drive piston 8 forms, and the central area that described hydraulic drive piston 8 is surrounded has one
Auger spindle connects bearing 7, can form knot by adjusting the straight-line displacement of each hydraulic drive piston
Structure bent angle, there is design maximum straight-line displacement in this straight-line displacement, this structure bent angle from 0 ° to
Big design angle change, structure bent angle design maximum angle sets with hydraulic drive piston 8 maximum
Meter straight-line displacement determines auger spindle 18 and transmits machine from auger spindle connection bearing 7 lower surface to moment of torsion
Structure guides the designed distance of rotary middle point O.
In the embodiment of the present invention, stabilized platform servomotor uses hollow shaft type servomotor, and this is real
Leaving hollow gap in executing the certain limit of example central axis, inside has mud to run passage, makes
Mud runs and ejects from drill bit 1 to drill bit 1 inside, then by rotating urceolus 6
And the annular space between the borehole wall returns to ground.Particularly, as very important auger spindle 18 with under
The mud of universal-joint Rzeppa 23 seals and can realize with seal bellows 24, similarly, seals
Corrugated tube can also realize the good mud sealing effectiveness of auger spindle 18 and hydraulic drive piston.
The embodiment of the present invention may also include that and is positioned at the drill collar rotated above urceolus, to improve rotation
Effect the pressure of the drill of urceolus；It is positioned at the MTR rotated above urceolus, rotates urceolus to change
Rotation torque；It is positioned at the turbogenerator rotated above urceolus, is used for as this rotary steerable tool
Offer electric power is supported.
The embodiment of the present invention also includes for stable connection platform servomotor and control circuit plate
Power supply and the guide link of control signal wire, this guide link is arranged on upper backup pad 12 following table
Face.
The embodiment of the present invention also provides for a kind of for this dynamic guiding type rotary steering drilling tool
Control method.It is illustrated in figure 3 the embodiment of the present invention and controls loop structure block diagram, mainly wrap
Include ground monitoring system, uplink/downlink communication system, measure system and down-hole rotation with brill (MWD)
Transduce to well-drilling tool system four major part.Whole system is controlled greatly loop and forms by inside and outside two,
Outer layer is the guiding by realizing ground monitoring and manual decision with (MWD) the measurement system of boring
Loop, internal layer is that down-hole rotary steering controls loop, and its guide track setting value can be to go into the well
Before preset geometry guide track parameter, it is also possible to be by MWD actual measurement formation parameter after
The geosteering trajectory parameters determined.It figure is then the core of rotary steerable drilling system in wire frame
Down-hole dynamic guiding type rotary steering drilling tool system.
Embodiment of the present invention well track is servo-actuated and stable control method structured flowchart such as Fig. 4 institute
Show.Hole angle to be controlled and side is calculated by computing unit according to preset well track parameter
Azimuth angle information, and desired structure bent angle value, and combine hydraulic drive piston guide offset mechanism
Operation principle, from which further follows that linear running displacement and the stabilized platform of each hydraulic drive piston
Main body 16 rotates against angular displacement relative to rotation urceolus 6.For realizing this hole angle and side
The accurate control of parallactic angle, uses double-closed-loop control device, and wherein closed loop I mainly realizes stably putting down
Platform main body 11 follows the reverse constant speed control rotating urceolus 6, it is achieved its geography is static, and this is right
It is accurately directed to control be extremely important；It can use fluxgate, utilizes geomagnetic field
North-South polarity feature, the circumferential variation magnetic field recorded is changed into circumferential variation number of times,
To rotating urceolus 6 rotating speed, or use laser gyro system, to eliminate the impact of magnetic drill collar,
Realize rotate kinetic measurement, rotation urceolus 6 actual speed measurement result is constantly adjusted to
Motion tracking variable, can be selected for the sensor of the different principle such as electric capacity, photoelectricity, Hall, and perception is revolved
The difference between CW and CCW speeds turning urceolus 6 and stabilized platform main body 15 is different, utilizes fuzzy controller a real
Its accurate dynamic servo-actuated reverse constant speed existing is followed the tracks of；Three axis accelerometer, magnetic is used in closed loop II
Power meter etc. can conveniently calculate real well oblique angle and azimuth；Fuzzy controller b is utilized to realize each
The linear running displacement of group hydraulic drive piston and stabilized platform main body 16 are relative to rotating urceolus
The accurate control rotating against angular displacement of 6, rotation speed change is to hole angle to be controlled and side
The impact of parallactic angle can be compensated by by the fine setting increment unit after being positioned at below closed loop I.
The technical method of the embodiment of the present invention and scheme of machine design, can not affect drillng operation
On the premise of, surge well oblique angle and azimuthal measurement data, keeping the most static of stabilized platform
During state, by adjusting linear running displacement and the stabilized platform main body of each hydraulic drive piston
Rotate against angular displacement relative to rotate urceolus, the accurate control of dynamic directional type can be realized,
Being effectively improved drilling efficiency, this embodiment can be widely applied to the stratum of various mechanical characteristic,
Particularly in soft formation, dead-soft bottom.
Above example is only in order to illustrate the technical scheme of the embodiment of the present invention, rather than limits it
System；Although the embodiment of the present invention being described in detail with reference to previous embodiment, this area
Those of ordinary skill it is understood that it still can be to the skill described in foregoing embodiments
Art scheme is modified, or wherein portion of techniques feature is carried out equivalent；And these
Amendment or replacement, do not make the essence of appropriate technical solution depart from the embodiment of the present invention and respectively implement
The spirit and scope of example technical scheme.
Claims (4)
1. a dynamic guiding type rotary steering drilling tool, including rotate urceolus, stabilized platform,
Guide offset mechanism, load transfer mechanism, torque-transmitting mechanisms, upper backup pad, lower supporting plate,
Auger spindle, drill bit, seal bellows, auger spindle connect bearing and conducting slip ring, it is characterised in that:
Rotate urceolus and directly apply the pressure of the drill and moment of torsion to drill bit, drive auger spindle, drill bit jointly to rotate, logical
Cross the angular displacement changing stabilized platform relative to rotating urceolus, auger spindle centrage can be made to point to thing
Any control azimuth in the range of north and south 0～360 °, guide offset mechanism is positioned at stabilized platform main body
Inside, stabilized platform is placed in rotation outer barrel, including hollow cylindrical stabilized platform main body,
Stabilized platform connects bearing, stabilized platform servomotor and supporting stabilized platform motor shaft coupling
Device, stabilized platform main body upper end is by being arranged in the lower supporting plate and lower supporting plate rotating urceolus
Embedding bearing connects fixing, and lower end connects bearing by stabilized platform and closely joins with rotating outer tube inner wall
Close, stabilized platform servomotor be arranged on rotate urceolus upper backup pad on, upper backup pad with under
Gripper shoe is being rotated on urceolus by interior hexagonal screw threads for fastening, and moves the most together, stable flat
Platform motor coupler is for stable connection platform servomotor and stabilized platform main body, stabilized platform
Driven by servomotor stabilized platform main body is relative to rotating urceolus constant speed phase despining so that it is in work
Make to keep the most static under state；Described stabilized platform servomotor is hollow shaft type motor.
2. dynamically guiding type rotary steering drilling tool as claimed in claim 1, its feature exists
In: guide offset mechanism is to be mutually 120 ° of three hydraulic drive piston installed, described liquid
The central area that pressure drives piston to be surrounded has an auger spindle to connect bearing, can be by adjusting each liquid
Pressure drives the straight-line displacement of piston, forms structure bent angle, and it is straight that this straight-line displacement exists design maximum
Displacement of the lines, this structure bent angle changes from 0 ° to design maximum angle, structure bent angle design maximum
Angle determines auger spindle with hydraulic drive piston design maximum straight-line displacement and is connected bearing from auger spindle
Lower surface is to the designed distance guiding rotary middle point in torque-transmitting mechanisms；Described auger spindle is even
Joint bearing is angular contact bearing, closely cooperates with auger spindle top union joint inside it, outside and each
Individual hydraulic drive piston is joined directly together.
3. dynamically guiding type rotary steering drilling tool, its feature as claimed in claim 1
It is: load transfer mechanism includes that the pressure of the drill bearing ring, elastic washer, sphere are only from top to bottom
Throw-out collar and spherical rotary ring, torque-transmitting mechanisms include upper cardan cage, lower cardan cage,
Steel ball, connecting key and for protecting inner sleeve and the outer sleeve of torque-transmitting mechanisms；The pressure of the drill passes
Being installed with auger spindle in passing mechanism, its upper end connects the eccentric hollow of bearing and interior eccentric hoop by auger spindle
Body is fastenedly connected, and middle part is extended with cylinder " convex " platform inner concave middle with spherical rotary ring
Contact, to such an extent as to can be further transferred on auger spindle by the pressure of the drill on spinning urceolus in the future, enter
And can be transferred to be installed on the drill bit of auger spindle front end；Described the pressure of the drill bearing ring is to have in the middle of one
" recessed " the shape column structure in hole, its upper end is placed on rotation outer tube inner wall concave station, and lower end is same
The upper cardan cage set of torque-transmitting mechanisms contacts, and directly carrying comes on spinning urceolus
The pressure of the drill, elastic washer, sphere thrust ring and spherical rotary ring are all sequentially placed in the pressure of the drill bearing ring
Portion, the guiding center of rotation that centre of sphere O is auger spindle of sphere thrust ring and spherical rotary ring, institute
The upper cardan cage stated is similar with lower cardan cage agent structure, is hollow circular cylinder,
Be evenly equipped with 8 1/4 " concave spherical surface " at inwall, its just with another 1/2 on auger spindle relevant position
Face, " concave spherical surface " composition whole world, face, the described whole world is built-in with high-quality steel ball, and dynamic torque is by all
The cloth eight connecting keys around urceolus are transferred to upper cardan cage and lower cardan cage, and
Rear eight major diameter steel balls are utilized to place a torque in the way of sphere-contact in auger spindle, Jin Erzuo
For drill bit.
4. dynamically guiding type rotary steering drilling tool as claimed in claim 1, its feature exists
In: described dynamic guiding type rotary steering drilling tool includes being arranged on upper backup pad lower surface
For stable connection platform servo motor power supply and the stabilized platform conducting slip ring of control signal wire；
Described auger spindle is connected the mud of bearing and seals and can realize with seal bellows with auger spindle；Described
The mud of auger spindle and lower cardan cage seal and can realize with seal bellows.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210402593.5A CN102913131B (en) | 2012-08-14 | 2012-10-19 | A kind of dynamically guiding type rotary steering drilling tool |
| CN201510140405.XA CN104775803B (en) | 2012-10-19 | 2012-10-19 | A kind of well track to dynamic guiding type rotary steering drilling tool is servo-actuated and stable control method |
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| CN201210288263.8 | 2012-08-14 | ||
| CN201210288263 | 2012-08-14 | ||
| CN2012102882638 | 2012-08-14 | ||
| CN201210402593.5A CN102913131B (en) | 2012-08-14 | 2012-10-19 | A kind of dynamically guiding type rotary steering drilling tool |
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| CN201510140405.XA Division CN104775803B (en) | 2012-10-19 | 2012-10-19 | A kind of well track to dynamic guiding type rotary steering drilling tool is servo-actuated and stable control method |
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| CN102913131A CN102913131A (en) | 2013-02-06 |
| CN102913131B true CN102913131B (en) | 2016-08-10 |
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| CN201210402593.5A Expired - Fee Related CN102913131B (en) | 2012-08-14 | 2012-10-19 | A kind of dynamically guiding type rotary steering drilling tool |
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| CN104499940B (en) * | 2014-11-02 | 2017-04-05 | 中国石油集团钻井工程技术研究院 | A kind of full rotation directional type steering tool and guidance method |
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| CN104832088B (en) * | 2015-03-25 | 2015-11-18 | 中国石油大学(华东) | Dynamic guiding type rotary steering drilling tool and investigating method thereof |
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