CN101563520B - System for steering a drill string - Google Patents
System for steering a drill string Download PDFInfo
- Publication number
- CN101563520B CN101563520B CN2007800460963A CN200780046096A CN101563520B CN 101563520 B CN101563520 B CN 101563520B CN 2007800460963 A CN2007800460963 A CN 2007800460963A CN 200780046096 A CN200780046096 A CN 200780046096A CN 101563520 B CN101563520 B CN 101563520B
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- Prior art keywords
- motor
- drill bit
- bit assembly
- axle
- phase
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 238000005755 formation reaction Methods 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 2
- 238000005553 drilling Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/062—Deflecting the direction of boreholes the tool shaft rotating inside a non-rotating guide travelling with the shaft
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Flexible Shafts (AREA)
Abstract
In one aspect of the present invention, a drill bit assembly has a body portion intermediate a shank portion and a working portion The working portion has at least one cutting element and at least a portion of a shaft is disposed within the body portion and protrudes from the working portion The shaft has a distal end rotationally isolated from the body portion and is in communication with a subterranean formation A motor is adapted to rotationally control the distal end.
Description
Background of invention
This invention relates to drill bit, particularly is used in the drill bit assembly of oil, natural gas, underground heat and horizontal drilling.Be desirably in the ability that has accurate adjustment probing direction in the down hole drill application, point to specific objective holing.Many steering have been designed for this purpose.
Such system is at United States Patent (USP) the 5th, 803, and is open in No. 185, incorporates by reference the full content that it comprises here into.This patent disclosure the rotary drilling system that turns to of bottom drill tool assembly arranged, bias unit and control module that the bottom drill tool assembly is adjusted except drill bit also comprises, bias unit has many hydraulic actuators around the periphery of this unit, each hydraulic actuator has movable propulsion members (thrust member), it is outside dislocation hydraulically, engages with the stratum with the boring of boring.Each actuator can be connected to by control valve the source of the brill liquid under the pressure, and the operation of valve controlled by control module, in order to be supplied to the fluid pressure of actuator along with the rotation adjustment of bias unit.If with the rotary synchronous operation control valve of bias unit, then propulsion members applies lateral offset to bias unit, and therefore is applied to drill bit, with the direction of control probing.
Summary of the invention
In one aspect of the invention, a kind of drill bit assembly has the main part that is between drillstock part (shank portion) and the working portion.Working portion has at least one cutting element, and at least a portion of axle is placed in the main part and from working portion stretches out.The end that axle has the main part of being rotationally isolated from and interrelates with subsurface formations.Motor is suitable for controlling rotatably end.
Motor can be motor, fluid power motor, positive-displacement engine (positivedisplacement motor) or their combination.Motor is stepping motor, ac motor, universal motor, three-phase AC asynchronous motor, phase AC synchronous motor, two-phase AC servomotor, single-phase ac asynchronous motor, single-phase AC synchronous motor, torque motor, permanent magnet motor, dc motor, DC Brushless Motor, centreless dc motor, linear motor, double fed motor or SF single feed formula motor, or their combination.Motor can be by turbine, battery or the dynamic transfer system excitation from earth's surface or down-hole.
Motor can interrelate with downhole generator.Generator can have the magnet made from SmCo.
Gear drive can be in the middle of axle and the motor, and interrelates with axle and motor.Axle can interrelate by the second gear drive and motor.The second gear drive can be planetary gear system.The second gear drive can have at least 2: 1 gear ratio.
Axle can stretch out 6 to 20 inches from working portion.The sensor that is arranged in the drill bit assembly can be measured axle about the orientation of drill bit assembly.End can be asymmetric.
Drill bit assembly can be measured and keep to the sensor that is fixed to drill bit about the orientation of subsurface formations.Sensor can be gyroscope, tilt meter, magnetometer or their combination.Drill bit assembly can interrelate with the down-hole telemetry systems.
Description of drawings
Fig. 1 is the sectional drawing that is hung in the embodiment of the drill string in the boring.
Fig. 2 is the sectional drawing of the embodiment of drill bit assembly.
Fig. 3 is the sectional drawing of another embodiment of drill bit assembly.
Fig. 4 is the sectional drawing of embodiment of the part of tool post (tool string).
Fig. 5 is the sectional view of the embodiment of the gear drive in the downhole tool post parts.
Fig. 6 is the schematic diagram of the embodiment of the generator that interrelates with load.
Fig. 7 is the schematic diagram of another embodiment of the generator that interrelates with load.
Fig. 8 is the sectional drawing of another embodiment of the part of drill bit assembly.
Fig. 9 is the sectional view of another embodiment of the gear drive in the drill bit assembly.
Figure 10 is the sectional drawing that is hung in another embodiment of the drill string in the boring.
Figure 11 is the phantom drawing of the various embodiments of rig.
Figure 12 is the phantom drawing of the embodiment of the tip of the axis.
Figure 13 is the phantom drawing of another embodiment of the tip of the axis.
Figure 14 is the phantom drawing of another embodiment of the tip of the axis.
Figure 15 is the phantom drawing of another embodiment of the tip of the axis.
Figure 16 is the phantom drawing of another embodiment of the tip of the axis.
Figure 17 is the phantom drawing of another embodiment of the tip of the axis.
Figure 18 is the phantom drawing of another embodiment of the tip of the axis.
Figure 19 is the phantom drawing of another embodiment of the tip of the axis.
Figure 20 is the phantom drawing of another embodiment of the tip of the axis.
Figure 21 is the phantom drawing of another embodiment of the tip of the axis.
Invention and preferred embodiment describe in detail
The embodiment of the drill string 100 that Fig. 1 is sling by boring tower 101.Bottom drill tool assembly 102 and/or drill bit assembly 102 are positioned at the bottom of boring 103 and comprise drill bit 104.Along with drill bit 104 to down-hole rotation, drill string 100 further in depth in.The penetrable soft or hard subsurface formations 105 of drill string.Drill bit assembly can comprise the data acquisition equipment of collecting data.Data send to the earth's surface via the transmission system of leading to data swivel (data swivel) 106.Data swivel 106 can send to surface equipment with data.Further, surface equipment can with data and/power sends to downhole tool and/or drill bit assembly 102.
Fig. 2 discloses the sectional drawing of drill bit assembly 102.Drill bit assembly can comprise and is used for encouraging the electronic equipment that is arranged in 102 li of drill bit assemblies and slurry turbine 201, battery 201 or the dynamic transfer system of instrument from earth's surface or down-hole.Turbine 201 can interrelate with the power generator 203 for drill bit assembly 102 and drill string 100 generation powers supply.Drill bit assembly 102 also can comprise power inverter 204, so that AC power is changed in the electricity output of power supply 201.
Motor 205 can be motor, fluid power motor, positive-displacement engine or their combination.Motor can be stepping motor, ac motor, universal motor, three-phase AC asynchronous motor, phase AC synchronous motor, two-phase AC servomotor, single-phase ac asynchronous motor, single-phase AC synchronous motor, torque motor, permanent magnet motor, dc motor, DC Brushless Motor, centreless dc motor, linear motor, double fed motor or SF single feed formula motor, or their combination.Drill bit assembly 102 can comprise being suitable for providing the control of motor 205 turned to engine control 204.Sensor can be arranged in 102 li of drill bit assemblies, to measure axle 202 about the orientation of drill bit assembly 102.
Drill bit assembly also can comprise gear drive 206, with the rotating speed of Control Shaft 202.Inclination angle and direction sensor 207 also can be arranged in the drill bit assembly, to survey and to measure drill bit assembly 102 in the position of down-hole.Direction sensor 207 also can be kept drill bit assembly about the orientation of subsurface formations 105.Sensor 207 can be gyroscope, tilt meter, magnetometer or their combination.Telemetry network linking 208 also can be arranged in 102 li of drill bit assemblies.
Fig. 3 and Fig. 4 disclose interchangeable embodiment of the present invention.Drill bit assembly 102 can comprise 301 li in the hole that is arranged in drill bit assembly 102, the first rotor 300 of close drill bit 104, and itself and axle 202 interrelate.The first rotor 300 can be the part of turbine 201, although the first rotor also can be the part of motor.Turbine 201 preferably includes 3 to 5 impellers 304 that are fixed to the first rotor.A plurality of stator vanes 305 of contiguous each impeller 304 can be fixing about the hole rotation of assembly 102.The second gear drive 210 is connected to the first rotor 300 with the second rotor 307.The second gear drive can comprise at least 2: 1 gear ratio.The second gear drive 210 is suitable for making the second rotor 307 to turn soon than the first rotor 300.Along with boring the turbine 201 of liquid through 301 li of via holes, impeller 304 rotates, thereby makes the second gear drive 210 and the first rotor and the second rotor.Preferably, the first rotor will be with different speed rotations with the second rotor, and preferably, the second rotor 307 will rotate to get 1.5 to 8 times soon than the first rotor.Bore liquid along the mobile mobile change direction of boring liquid that makes of the circulating path in the hole 301 of drill string 100 by stoping, the stator vane 305 that turbine is 201 li can help to increase the efficient of turbine 201.
The second rotor 307 can be the part of generator 308.Generator 308 can comprise the stator around the second rotor 307.Stator can comprise the conductive coil with 1 to 50 winding.Spendable a kind of such generator is the Astro40 that comes from AstroFlight company.Generator 308 can comprise the independent magnetic stripe of arranging along the outside of rotor 307, and along with the magnetic stripe rotation, it magnetically interacts with coil, generation current in conductive coil.Because SmCo has high-curie temperature and high resistance demagnetization property, magnetic stripe is preferably made with SmCo.
Coil and load interrelate.When application load, draw electric power from generator 308, cause 307 rotations of the second rotor slack-off, therefore make turbine 201 and the first rotor 300 rotations slack-off.Therefore can apply the rotation that load comes turbine 201 under the control well.Because the second rotor 307 turns soon than the first rotor 300, so it produces less torque, thereby needs less electric current from load make rotation slack-off.Therefore, the second gear drive 210 can provide the advantage that the electric power of minimizing control turbine 201 rotations requires.This is very useful, because generation and the storage of well dynamic in the down-hole is difficult to.
In order to produce multiple current more or to help the rotation of the first generator 308, the second generator 409 that is connected to the first generator 308 can be arranged also.Load can be resistor, nichrome wire, helix, electronic equipment or their combination.Can be by applying and disconnecting consumers with the same fast speed of rotary speed of the second rotor 307 at least.
Generator 308,409 can interrelate with the load as the part of circuit 401.Circuit 401 can be arranged in 402 li of the hole walls of drill bit assembly 102.Generator 309 can be connected to circuit 401 by coaxial cable 403.Circuit 401 is parts of closed-loop system.Circuit 401 also can comprise sensor, is used for the various aspects of monitoring probing, and for example rotary speed or drill bit assembly 102 are about the orientation on stratum 105.Sensor also can be measured generator 308 about the orientation of drill bit assembly 102.
For Control Shaft 202 and its end 211, can be used to adjust the rotary speed of turbine 201 from the data of these sensors collections.The terminal 211 asymmetric tops that can comprise that drill bit 104 is turned to and therefore drill string 101 be turned to.Control turbine 201 has just been controlled terminal 211 speed and orientation, and has just controlled thus probing track (drilling trajectory).Axle 202 can be connected to the first rotor 300 by gear drive 206, and along with the rotation of turbine 201, it makes axle 202 in opposite spin.Therefore, under the help of the rotary speed of controlling turbine 201, can make axle 202 about drill string 100 rotations, and simultaneously static in fact about the stratum 105 of boring, and allow terminal 211 drill string 100 is turned to.
Load can interrelate with down-hole telemetry systems 404.Such system is United States Patent (USP) the 6th, 670, and No. 880 disclosed IntelliServ systems incorporate its disclosed all the elements here by reference into.Can send to the earth's surface by telemetry systems 404 from the data of sensor or other down-hole electronic unit collection.In order to monitor conditions down-hole, in ground table analysis data.If drill bit assembly 102 runs into the stratum 105 of different hardness, but then operator's usage data on earth's surface is adjusted drilling rate.The telemetry systems 404 of other type can comprise mud pulse system, electromagnetic wave system, induction system, fibre system, directly connected system, wired pipe system or their any combination.In some embodiments, sensor can be the part of feedback control loop that the logic of control load is controlled.In these embodiments, can make the probing automation, and electronic installation can comprise that enough intelligence avoids possible coarse formations drilled 105, simultaneously drill string 100 is remained on the correct track.In some embodiments, probing is by full automation, and wherein the position of desired track and actual load (pay load) is programmed in the electronic installation, and allows its own operation and do not need manual control.
Stabilizer 312 can be around 301 li in the hole of drill bit 104 or drill bit assembly 102 be arranged in axle 202, and it can prevent the crooked of axle 202 or disperse.
The second gear drive 210 in the embodiment of Fig. 5 is planetary gear systems, and it can be used to axle 202 is connected to the first rotor 300.Planetary gear system comprises the central gear 500 that is rotated by the first rotor 300 that is connected to turbine 201.Along with central gear 500 rotation, around and a plurality of peripheral gears 501 rotations of interlocking central gear 500, this causes again outside gear ring 502 rotations.The rotary speed of central gear 500 and outside gear ring 502 is than the size that depends on central gear 500 and a plurality of peripheral gears 501.The second gear drive 210 also comprises in order to keep the supporting member 503 of peripheral gears 501 axial restraints.
Planetary gear system is arranged in 315 li of cases, and is just gapped 504 between outside gear ring 502 and the case 315 like this, so that gear ring 502 is rotatable.Case 315 also can comprise inner shaft bearing surface 505, and like this, the second gear drive 210 and case 315 can flush with gear ring 502, and still rotatable.Case 315 also can comprise a plurality of paths 506, and wherein boring liquid can be through the hole 301 of drill bit assembly 102.
With reference now to Fig. 6,, load 600 is resistors of 401 li in circuit, and it is electrically connected to generator 308.Being rotated between two generator terminals 601,602 of generator 308 produces alternating voltage.Circuit comprises bridge rectifier 603, and it makes alternating voltage be converted to DC voltage.Circuit also comprises dc switch 604, field-effect transistor (FET) for example, and it drives conducting or disconnections by logical order 605.When dc switch 604 conducting, closing of circuit, so that DC voltage produces pressure drop in load 600, and therefore generator 308 outputting powers cause the rotary speed of generator 308 to slow down.Yet when dc switch 604 disconnected, circuit was open circuit, did not have power from 308 outputs.Although need DC current to operate, the FET switch is the cheaply selection of closed circuit.
Fig. 7 shows another embodiment of the circuit that comprises alternating-current switch 700.Alternating-current switch 700 can be the triode (triac) for alternating current, and it allows load to connect alternating current or disconnects alternating current.Alternating voltage one zero passage, triac just can be carried out switch motion, depend on the logical order 605 of driving switch, and alternating voltage zero-crossing can occur in half circulation of the output of generator 308.The alternating-current switch 700 of alternative triac is igbt (IGBT).Use the advantage of IGBT to be, although IGBT is more expensive and complicated than triac, the speed that IGBT carries out switch can be independent of cycle period and the zero crossing of the alternating voltage of generator 308.
With reference to figure 8, terminal 211 are adjusted to the steering that it can be used as drill string 100.Terminal 211 can comprise asymmetric top, and like this, a side 801 has the surface areas that are exposed to stratum 105 more.Gear drive 206 be adjusted to so that the rotary speed of turbine 201 than fast 10 to 25 times of terminal 211 rotary speed.Along with the rotation of drill string, turbine 201 is rotatable and so that terminal 211 keep fixing with respect to stratum 105 rotatably.When end 105 engages and rotatably with respect to stratum 105 fixedly the time, thinks that the asymmetric direction of drill string 100 that will make of end 211 departs from against the stratum.Terminal 211 orientation can be by the logic adjustment that interrelates with load.Sensor can be indicated terminal 211 position, and by feedback control loop, the load of logic capable of regulating is to redefine the direction of end 211.With a kind of like this method, complicated probing track is possible.Owing to cause the end 211 of axle 202 with drill bit 104 rotations, and think and cause drill string 100 in substantially straight direction probing.
Can comprise straight spur gear with reference to figure 9, the second gear drives 210.The first straight spur gear 900 can be connected to the first rotor 300, and interrelates with the second straight spur gear 901.The second straight spur gear 901 can be connected to the jackshaft 902 that is supported by case 315.The second axle 902 also can comprise the 3rd gear 903, and it interrelates with the 4th gear 904 that is connected to the second rotor 307.The size of gear is adjusted to so that the second rotor 307 turns soon than the first rotor 300.Case 315 and/or jackshaft 902 can comprise bearing surface 905, reduce the friction that case 315 supports jackshaft 905 places.
With reference now to Figure 10,, boring tower 101 drill string 100 that plays.Drill bit assembly 102 is positioned at the bottom of boring 103 and comprises drill bit 104.Along with drill bit 104 rotates in the down-hole, drill string 100 is advanced further in the ground.Drill string 100 can redirect to preferred direction.In some embodiments, sensor 207 can be arranged on the drill string component 102, and is suitable for receiving the acoustic signal 1001 that is produced by drill bit 104.The acoustic signal 1001 that drill bit 104 produces can be from the stratum 105 be returned.This is useful in the characteristic of determining Different Strata 105.
Figure 11 shows and is used in the various embodiments that turn to the rig in the application.In one embodiment, suppose to have for example blowout of emergency, in order controllably to reduce subsurface pressure, settle rig 1100, so that can get out a directed rescue boring 1155, to intersect with another mouthful well 1150.During a plurality of reservoirs 1140 approximate probings along the vertical track location that rig 1110 can be used on wherein oil for example or natural gas reservoirs are used.In this environment, get out straight in fact track 1151 in the place of contiguous reservoir 1140, and 1140 to get out from a plurality of tracks 1152 of main orbit 1151 bifurcateds be useful from straight in fact track 1151 to reservoir.Equally, during drilling operation, may be necessary to form boring 1115 around obstructions such as boulder, hard formation, rock salt or area of low pressure 1103.When using the drill string that can turn to, an available rig 1120 arrives a plurality of reservoirs 1160.Boring 1125 can be drilled towards the first reservoir.If other boring is positioned near the first boring, then the steering capability of drill string can allow to be drilled into each reservoir, and need not shift out drill string and again rig 1120 is positioned for each drilling operation.In some cases, reservoir 1170 can be positioned at below the structure 1101, and like this, rig 1130 just can not be located immediately at the top of reservoir and drill a straight track.Therefore, need proximity structure 1101 to form boring 1135, and use the steering capability of drill string to form crooked track towards reservoir.This tool post can be equipped with to drill in off-shore applications and in the land application.
Figure 12 is until 15 illustrate various terminal 211 embodiments.Figure 12 shows the main crooked surface (primary deflecting surface) 1206 with slight convex geometry 1200.In the embodiment of Figure 13, main surface 1206 can comprise flat geometry 1300.At Figure 14, terminal 211 also can have the geometry 1400 of slight projection, but can comprise the radius of curvature larger than the embodiment that shows among Figure 12.Main crooked surface can comprise 0.750 to 1.250 inch radius.Think that the geometry 1400 of projection will allow terminal 211 by the point load stratum 105 of crushing, occur by surface loading in having the embodiment of plane geometric shape and be different from.Point load is considered to be preferred for turning to application.Figure 15 shows to have main surperficial 1206 of slightly recessed geometry 1500.Terminal 211 can have polygonal shape along its length.
Figure 16 shows the asymmetric terminal 211 of flat surfaces 1600 in fact, and surface 1600 is to intersect to the central axis 1601 of the angle 1602 between 89 degree with axle 202 at 1 degree.Ideally, angle 1602 is spent to 60 at 30 degree.Figure 17 shows the asymmetric geometry of the end 211 that comprises otch 1701.Otch 1701 can be that be recessed into, projection or smooth.Figure 18 shows the geometry on plane 1800 of the projection 1801 of skew.The embodiment of Figure 19 shows the offset protrusion 1801 on plane 1900.The asymmetric geometry of Figure 20 is leg-of-mutton substantially.In other embodiments, asymmetric geometry is taper substantially.Figure 21 shows the asymmetric geometry of end 211 of the cardinal principle triangle 2100 of recessed side 2101.
Although specifically described the present invention about accompanying drawing, should be understood that except these demonstrations or suggestion other and further change can in scope and spirit of the present invention, carry out.
Claims (16)
1. drill bit assembly comprises:
Drill bit, described drill bit comprises:
Main part, it is between drillstock part and the working portion, and described working portion comprises at least one cutting element;
Axle, it is arranged in the described main part of described drill bit, and described the tip of the axis stretches out from described working portion, and described end is rotationally isolated from described main part and interrelates with subsurface formations; And
Turn to motor, its be adapted to pass through make axle about the rotation of described main part and simultaneously described end fixedly come in fact rotatably to control rotatably described axle about described subterranean layer, described end is asymmetric, when described end engages and rotatably with respect to described subterranean layer fixedly the time, the asymmetric direction of drill string that will make of described end departs from against described subterranean layer.
2. drill bit assembly as claimed in claim 1, wherein said motor is motor, fluid power motor, positive-displacement engine or their combination.
3. drill bit assembly as claimed in claim 1, wherein said motor and downhole generator interrelate.
4. drill bit assembly as claimed in claim 3, wherein said generator comprise the magnet made from SmCo.
5. drill bit assembly as claimed in claim 1, wherein gear drive is between described axle and the described motor and with described axle and described motor and interrelates.
6. drill bit assembly as claimed in claim 1, wherein said axle interrelates by gear drive and described motor.
7. drill bit assembly as claimed in claim 6, wherein said gear drive is planetary gear system.
8. drill bit assembly as claimed in claim 6, wherein said gear drive comprises at least 2: 1 gear ratio.
9. drill bit assembly as claimed in claim 1 wherein is arranged in the described axle of sensor measurement in the described drill bit assembly about the orientation of described drill bit assembly.
10. drill bit assembly as claimed in claim 1 wherein is fixed to the sensor measurement of described drill bit assembly and keeps described drill bit assembly about the orientation of subsurface formations.
11. drill bit assembly as claimed in claim 10, wherein said sensor are gyroscope, tilt meter, magnetometer or their combination.
12. drill bit assembly as claimed in claim 2, wherein said motor is stepping motor, ac motor, universal motor, torque motor, permanent magnet motor, dc motor, linear motor, double fed motor or SF single feed formula motor, or their combination.
13. drill bit assembly as claimed in claim 1, wherein said drill bit assembly and down-hole telemetry systems interrelate.
14. drill bit assembly as claimed in claim 1, wherein said motor is by turbine, battery or dynamic transfer system excitation from earth's surface or down-hole.
15. drill bit assembly as claimed in claim 1, wherein said axle stretches out 6 to 20 inches from described working portion.
16. drill bit assembly as claimed in claim 12, wherein said ac motor is three-phase AC asynchronous motor, phase AC synchronous motor, two-phase AC servomotor, single-phase ac asynchronous motor or single-phase AC synchronous motor, and described dc generator is DC Brushless Motor or centreless dc motor.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/611,310 US7600586B2 (en) | 2006-12-15 | 2006-12-15 | System for steering a drill string |
| US11/611,310 | 2006-12-15 | ||
| US11/668,341 US7497279B2 (en) | 2005-11-21 | 2007-01-29 | Jack element adapted to rotate independent of a drill bit |
| US11/668,341 | 2007-01-29 | ||
| US11/673,872 | 2007-02-12 | ||
| US11/673,872 US7484576B2 (en) | 2006-03-23 | 2007-02-12 | Jack element in communication with an electric motor and or generator |
| US11/837,321 US7559379B2 (en) | 2005-11-21 | 2007-08-10 | Downhole steering |
| US11/837,321 | 2007-08-10 | ||
| PCT/US2007/086323 WO2008076625A2 (en) | 2006-12-15 | 2007-12-04 | System for steering a drill string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101563520A CN101563520A (en) | 2009-10-21 |
| CN101563520B true CN101563520B (en) | 2013-04-10 |
Family
ID=39536950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800460963A Expired - Fee Related CN101563520B (en) | 2006-12-15 | 2007-12-04 | System for steering a drill string |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP2092153A4 (en) |
| CN (1) | CN101563520B (en) |
| AU (1) | AU2007334141B2 (en) |
| BR (1) | BRPI0718338A2 (en) |
| CA (1) | CA2672658C (en) |
| MX (1) | MX338284B (en) |
| MY (1) | MY155017A (en) |
| NO (1) | NO20092420L (en) |
| WO (1) | WO2008076625A2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012122211A1 (en) * | 2011-03-10 | 2012-09-13 | Halliburton Energy Services, Inc. | Magnetostrictive motor for a borehole assembly |
| CN103089159A (en) * | 2011-11-08 | 2013-05-08 | 南通永大管业股份有限公司 | Intelligent drilling rod with chip and intelligent drilling rod data transmission device |
| CN104160107B (en) * | 2012-01-11 | 2017-05-31 | 哈里伯顿能源服务公司 | Pipe-in-pipe BHA electric drive motors |
| CN103672165A (en) * | 2012-09-05 | 2014-03-26 | 许文红 | Long-lasting wireless probe device capable of replacing wired probes |
| CN103306606B (en) * | 2013-06-28 | 2015-07-08 | 中国地质大学（武汉） | Planetary gear train energy-saving dual-layer drill for drilling of deep oil gas well |
| WO2015126399A1 (en) * | 2014-02-20 | 2015-08-27 | Halliburton Energy Services, Inc. | Closed-loop speed/position control mechanism |
| FR3017897B1 (en) * | 2014-02-21 | 2019-09-27 | I.T.H.P.P | ROTARY DRILLING SYSTEM BY ELECTRIC DISCHARGES |
| CN108736463A (en) * | 2017-04-24 | 2018-11-02 | 通用电气公司 | Generating power downhole system and method |
| CN112227952A (en) * | 2020-10-31 | 2021-01-15 | 河南城建学院 | Trenchless directional drill bit |
| CN114086949B (en) * | 2021-10-21 | 2023-04-11 | 航天凯天环保科技股份有限公司 | Geological exploration sampling method guided by hydraulic pressure |
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| US2300016A (en) * | 1939-04-03 | 1942-10-27 | Reed Roller Bit Co | Directional drilling apparatus |
| US4875531A (en) * | 1987-01-23 | 1989-10-24 | Eastman Christensen Company | Core drilling tool with direct drive |
| US5193628A (en) * | 1991-06-03 | 1993-03-16 | Utd Incorporated | Method and apparatus for determining path orientation of a passageway |
| US5803185A (en) * | 1995-02-25 | 1998-09-08 | Camco Drilling Group Limited Of Hycalog | Steerable rotary drilling systems and method of operating such systems |
| CN1617973A (en) * | 2001-07-16 | 2005-05-18 | 国际壳牌研究有限公司 | Steerable rotary drill bit assembly with pilot bit |
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| US2540464A (en) * | 1947-05-31 | 1951-02-06 | Reed Roller Bit Co | Pilot bit |
| US6367565B1 (en) * | 1998-03-27 | 2002-04-09 | David R. Hall | Means for detecting subterranean formations and monitoring the operation of a down-hole fluid driven percussive piston |
| US6670880B1 (en) | 2000-07-19 | 2003-12-30 | Novatek Engineering, Inc. | Downhole data transmission system |
| US6729420B2 (en) * | 2002-03-25 | 2004-05-04 | Smith International, Inc. | Multi profile performance enhancing centric bit and method of bit design |
| US20050133268A1 (en) * | 2003-12-17 | 2005-06-23 | Moriarty Keith A. | Method and apparatus for casing and directional drilling using bi-centered bit |
| US20060077757A1 (en) * | 2004-10-13 | 2006-04-13 | Dale Cox | Apparatus and method for seismic measurement-while-drilling |
| US8827006B2 (en) * | 2005-05-12 | 2014-09-09 | Schlumberger Technology Corporation | Apparatus and method for measuring while drilling |
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2007
- 2007-12-04 CA CA2672658A patent/CA2672658C/en not_active Expired - Fee Related
- 2007-12-04 BR BRPI0718338-0A patent/BRPI0718338A2/en not_active Application Discontinuation
- 2007-12-04 MY MYPI20092369A patent/MY155017A/en unknown
- 2007-12-04 WO PCT/US2007/086323 patent/WO2008076625A2/en active Application Filing
- 2007-12-04 AU AU2007334141A patent/AU2007334141B2/en not_active Ceased
- 2007-12-04 CN CN2007800460963A patent/CN101563520B/en not_active Expired - Fee Related
- 2007-12-04 EP EP07865141.1A patent/EP2092153A4/en not_active Withdrawn
- 2007-12-04 MX MX2009006368A patent/MX338284B/en active IP Right Grant
-
2009
- 2009-06-25 NO NO20092420A patent/NO20092420L/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2300016A (en) * | 1939-04-03 | 1942-10-27 | Reed Roller Bit Co | Directional drilling apparatus |
| US4875531A (en) * | 1987-01-23 | 1989-10-24 | Eastman Christensen Company | Core drilling tool with direct drive |
| US5193628A (en) * | 1991-06-03 | 1993-03-16 | Utd Incorporated | Method and apparatus for determining path orientation of a passageway |
| US5803185A (en) * | 1995-02-25 | 1998-09-08 | Camco Drilling Group Limited Of Hycalog | Steerable rotary drilling systems and method of operating such systems |
| CN1617973A (en) * | 2001-07-16 | 2005-05-18 | 国际壳牌研究有限公司 | Steerable rotary drill bit assembly with pilot bit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008076625A2 (en) | 2008-06-26 |
| WO2008076625A3 (en) | 2009-02-26 |
| MX338284B (en) | 2016-04-11 |
| MY155017A (en) | 2015-08-28 |
| EP2092153A4 (en) | 2015-03-25 |
| CN101563520A (en) | 2009-10-21 |
| MX2009006368A (en) | 2009-08-26 |
| EP2092153A2 (en) | 2009-08-26 |
| BRPI0718338A2 (en) | 2013-11-19 |
| CA2672658C (en) | 2014-07-08 |
| AU2007334141B2 (en) | 2014-03-06 |
| AU2007334141A1 (en) | 2008-06-26 |
| CA2672658A1 (en) | 2008-06-26 |
| NO20092420L (en) | 2009-06-25 |
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