WO2020119671A1 - Dispositif de forage directionnel - Google Patents

Dispositif de forage directionnel Download PDF

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Publication number
WO2020119671A1
WO2020119671A1 PCT/CN2019/124237 CN2019124237W WO2020119671A1 WO 2020119671 A1 WO2020119671 A1 WO 2020119671A1 CN 2019124237 W CN2019124237 W CN 2019124237W WO 2020119671 A1 WO2020119671 A1 WO 2020119671A1
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WO
WIPO (PCT)
Prior art keywords
drilling device
directional drilling
shaft assembly
fixed sleeve
drive
Prior art date
Application number
PCT/CN2019/124237
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English (en)
Chinese (zh)
Inventor
徐梓辰
万晓跃
Original Assignee
徐梓辰
万晓跃
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 徐梓辰, 万晓跃 filed Critical 徐梓辰
Publication of WO2020119671A1 publication Critical patent/WO2020119671A1/fr

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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
    • 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
    • E21B4/02—Fluid rotary type drives

Definitions

  • the invention relates to the technical field of drilling operations, in particular to a directional drilling device.
  • the object of the present invention is to provide a directional drilling device which makes the drill easy to go out of the well and has simple operation.
  • the present invention provides a directional drilling device, which at least includes:
  • the fixed sleeve is provided with a drive shaft assembly, and the drive shaft assembly includes an upper rotating part, a flexible section and a lower rotating part which are sequentially connected from top to bottom.
  • the lower end of the fixed sleeve is connected through a steering structure Is in contact with the lower end of the lower rotating part or the flexible section, and there is a movable gap between the fixed sleeve and the flexible section, and a drill bit is connected to the lower end of the lower rotating section;
  • a deflection control mechanism is provided in the fixed sleeve.
  • the deflection control mechanism includes at least one set of drive assemblies, the drive assembly includes at least three sets disposed between the drive shaft assembly and the fixed sleeve
  • a driving hydraulic cylinder arranged along the radial direction of the driving shaft assembly the driving hydraulic cylinder includes a cylinder barrel connected to the side wall of the fixed sleeve and a driving piston arranged in the cylinder barrel, The drive piston can move toward or away from the axis of the drive shaft assembly, and the movement of each drive piston can drive the drive shaft assembly to deflect relative to the fixed sleeve.
  • the drive assembly further includes a force transmission member disposed between the drive shaft assembly and the fixed sleeve, and each of the drive pistons can communicate with the force Pieces connected.
  • the steering connection structure includes a fixed portion and a rotating portion, the rotating portion is rotatably connected to the fixed portion, and the rotating portion is connected to the fixed portion
  • the surface is an arc surface
  • the fixing portion is fixedly connected to the fixing sleeve
  • the rotating portion is sleeved outside the lower rotating portion and is in contact with the lower rotating portion.
  • the deflection control mechanism further includes a hydraulic system
  • the hydraulic system includes a hydraulic pump connected to an electric motor, a power fluid line and a return fluid line
  • the power fluid line is provided with
  • the cylinder wall of the fixed sleeve is provided with a hydraulic power accommodating cavity and a liquid return storage cavity
  • the motor and the hydraulic pump are arranged in the hydraulic power accommodating cavity, and each of the cylinders
  • the cartridge is in sealed communication with the hydraulic pump through the power liquid line
  • the power liquid line is in communication with the liquid return storage cavity through the liquid return line.
  • the directional drilling device further includes an electric power system including an energy transmission member, a circuit connector provided at the upper end of the upper rotating part, and the fixed A control circuit and a measurement circuit on the side wall of the sleeve
  • the energy transmission member includes an energy output end sleeved on the outer circumferential surface of the drive shaft assembly, and an inner wall surface connected to the fixed sleeve An energy receiving end, the energy output end is electrically connected to the circuit connector, the energy receiving end is electrically connected to the control circuit and the measurement circuit, and the control circuit is electrically connected to the motor.
  • the directional drilling device as described above, wherein the energy transmission member is a wireless energy transmission member, the energy output end is a wireless energy transmission end, and the energy reception end is a wireless energy reception end.
  • the directional drilling device as described above, wherein the outer peripheral surface of the fixed sleeve is provided with a hydraulic pushing mechanism capable of contacting the formation and having an anti-rotation function.
  • the hydraulic pushing mechanism includes an anti-rotation hydraulic cylinder and The pushing member, the anti-rotation piston of the anti-rotation hydraulic cylinder can push the pushing member to come into contact with the formation.
  • the deflection control mechanism further includes a hydraulic system
  • the hydraulic system includes a hydraulic pump connected to an electric motor, a power fluid line and a return fluid line
  • the power fluid line is provided with
  • the cylinder wall of the fixed sleeve is provided with a hydraulic power accommodating cavity and a liquid return storage cavity
  • the motor and the hydraulic pump are arranged in the power accommodating cavity, and each of the cylinders Sealingly communicate with the hydraulic pump through the power fluid line, and the power fluid line communicates with the liquid return storage cavity through the liquid return line;
  • the anti-rotation hydraulic cylinder communicates with the power fluid line through an anti-rotation force line.
  • the directional drilling device as described above, wherein the force transmission member is an annular bracket sleeved outside the drive shaft assembly, and a lower end of the annular bracket extends downward to be connected with the rotating part.
  • the force transmission member is a sleeve that is clamped in the accommodating space.
  • the force transmission member includes:
  • a power transmission shoe which is connected to the driving piston, and the movement of the driving piston can drive the power transmission shoe to push against the bias cylinder, and the bias cylinder can drive the drive shaft assembly relative to the The fixed sleeve deflects.
  • the directional drilling device applies thrust to the force transmission member through the driving pistons when the drill bit comes out of the well. Since the thrusts exerted by the pistons in different directions are different, the resultant force in different directions and different magnitudes can be generated.
  • the thrust of the piston adjusts and adjusts the direction and the magnitude of the resultant force at the point where the drive shaft is pushed, so that the direction of the drive shaft and the degree of deflection can be controlled, and finally the hole trajectory during drilling Control, and makes the drill easy to go out of the well.
  • FIG. 1 is a schematic structural view of a directional drilling device of the present invention
  • FIG. 2 is an enlarged schematic structural view of part A in FIG. 1;
  • FIG. 3 is another schematic structural view of the directional drilling device of the present invention.
  • FIG. 4 is an enlarged schematic structural view of part B in FIG. 3;
  • FIG. 5 is a schematic structural view of the drive shaft assembly in FIG. 4;
  • FIG. 6 is another schematic structural view of the directional drilling device of the present invention.
  • FIG. 7 is an enlarged schematic structural view of part C in FIG. 6;
  • FIG. 8 is a schematic structural view of the D-D section in FIG. 7;
  • FIG. 9 is a schematic view of the structure of the E-E section in FIG. 7.
  • Hydraulic system 41, hydraulic pump; 42, electric motor; 43, power fluid pipeline; 44, return fluid pipeline;
  • the present invention provides a directional drilling device, which at least includes a fixed sleeve 1 and a deflection control mechanism, Among them, the fixed sleeve 1 is in a static non-rotation state with respect to the formation, and the fixed sleeve 1 is penetrated with a drive shaft assembly 2 which includes an upper rotating part 21, a flexible section 22 and Lower rotating portion 23, the lower end of the fixed sleeve 1 is connected to the lower end of the lower rotating portion 23 or the flexible section 22 through the steering connection structure 7, and there is a movable gap between the fixed sleeve 1 and the flexible section 22, the drive shaft assembly 2 It can deflect with respect to the fixed sleeve 1.
  • a drive shaft assembly 2 which includes an upper rotating part 21, a flexible section 22 and Lower rotating portion 23, the lower end of the fixed sleeve 1 is connected to the lower end of the lower rotating portion 23 or the flexible section 22 through the steering connection structure 7, and there is a movable gap between the fixed sleeve 1 and
  • the deflection control mechanism is arranged in the fixed sleeve 1, and the deflection control mechanism is close to the side of the drive shaft assembly 2 facing the drill bit 20.
  • the deflection control mechanism includes at least one set of drive components, preferably, Along the circumferential direction of the drive shaft assembly 2, the deflection control mechanism includes three sets of drive components arranged at intervals of 120°. Of course, more than three sets of drive components can also be provided according to actual use requirements.
  • the drive components include At least three drive hydraulic cylinders 3 arranged at equal intervals of 120° from each other in the radial direction of the drive shaft assembly 2 between the assembly 2 and the fixed sleeve 1, preferably, as shown in FIG.
  • each drive hydraulic The cylinders 3 are arranged at equal intervals along the outer peripheral surface of the fixed sleeve 1. It should be noted that the arrangement of the drive assembly of the directional drilling device shown in FIGS. 1 and 3 and the arrangement of the drive assembly shown in FIG. 8 In the same way, each driving hydraulic cylinder 3 can apply a force to the driving shaft assembly 2.
  • the driving hydraulic cylinder 3 includes a cylinder 31 and a driving piston 32 disposed in the cylinder 31.
  • the driving piston 32 can be driven toward or away from The axis of the shaft assembly 2 moves, and the movement of each drive piston 32 can drive the lower rotating portion 23 of the drive shaft assembly 2 to deflect relative to the fixed sleeve 1, and the drive of the drive shaft assembly 2 by each drive hydraulic piston can drive
  • the deflection force of the shaft assembly 2 causes the drive shaft assembly 2 to flex, and finally achieves the purpose of changing the direction of the bit 20.
  • the applied force may be an inward thrust (pointing to the direction of the axis of the drive shaft assembly 2) Or it is the pulling force outward (2 axis away from the drive shaft assembly).
  • the drive shaft assembly 2 is a continuous pipe string.
  • the continuous pipe string includes two or more pipe sections that are connected with each other through a completely locked connection method such as threading, plug welding, etc., but a universal joint cannot be used between adjacent two pipe sections Type can make the drive shaft assembly 2 can be connected by variable angle force transmission.
  • the driving piston 32 is in the cylinder barrel 31, that is, the driving piston 32 is in a contracted state, at this time, there is no contact between the driving hydraulic cylinder 3 and the driving shaft assembly 2, and the driving shaft assembly 2 cannot be relatively fixed
  • the drive piston 32 extends out of the cylinder 31, that is, the drive piston 32 is in an open state.
  • all the drive pistons 32 can apply thrust to the drive shaft assembly 2 Because of the different thrusts exerted by the pistons in different directions, the resultant forces of different magnitudes toward different directions are generated, so that the direction of the resultant force is directed in the direction opposite to the direction of guidance.
  • the resultant thrust in the direction opposite to the direction of guidance acts on the drive shaft assembly 2 to drive
  • the shaft assembly 2 bends in the opposite direction to the guide direction, and because the deflection control mechanism is disposed on the side close to the drill bit 20, the drive shaft assembly 2 only deflects on the side near the drill bit 20, thereby causing the drill bit 20 to deflect , Making the drill bit 20 easy to go out of the well.
  • the directional drilling device applies thrust to the drive shaft assembly 2 through each driving piston 32. Since the thrusts applied by the pistons in different directions are different, a resultant force in different directions and different sizes is generated.
  • Thrust adjust the direction of the resultant force at the pushed point of the drive shaft assembly 2 and the size of the resultant force, so that the direction of the drive shaft assembly 2 and the degree of deflection can be controlled, and finally the drilling process It controls the trajectory of the hole and makes the trajectory of the well bore easy to control.
  • the drive assembly further includes a force transmission member 33 disposed between the drive shaft assembly 2 and the fixed sleeve 1.
  • Each drive piston 32 can be connected to the force transmission member 33 for use.
  • each driving hydraulic cylinder 3 can apply force to the force transmission member 33, and the force transmission member 33 is applied to the drive shaft assembly 2, so that the drive shaft assembly 2 deflects relative to the fixed sleeve 1, thereby driving the drill bit 20 Deflection occurred.
  • the force transmission member 33 and the fixed sleeve 1 are sealed by a bellows (not shown in the figure) to prevent the cuttings from falling out of the gap between the force transmission member 33 and the fixed sleeve 1, wherein the bellows
  • the connection method is the existing technology, and will not be repeated here.
  • the steering connection structure 7 is located between the drill bit 20 and the deflection control mechanism.
  • the steering connection structure 7 is a fulcrum of the drive shaft assembly 2 relative to the fixed sleeve 1.
  • the steering connection structure 7 includes a fixed portion 71 and the rotating portion 72, the rotating portion 72 is rotatably connected to the fixed portion 71, and the connecting surface of the rotating portion 72 and the fixed portion 71 is an arc surface, so that the rotating portion 72 can rotate relative to the fixed portion 71, the fixed portion 71 Fixedly connected to the inner wall surface of the fixed sleeve 1, the rotating part 72 is sleeved on the outside of the lower rotating part 23 and is connected to the lower rotating part 23, and the upper end of the rotating part 72 can be connected to the force transmission member 33 during operation , Each driving hydraulic cylinder 3 can apply force to the force transmission member 33, the force transmission member 33 is applied to the rotating portion 72, and then transmitted through the rotating portion 72 to the lower rotating portion 23, so that the drive shaft assembly 2 is
  • a bearing 6 with a centralizing function is connected between the rotating portion 72 and the lower rotating portion 23, so that the drive shaft assembly 2 The driving force cannot be transmitted to the fixed sleeve 1, which realizes torque isolation, thereby ensuring that the fixed sleeve 1 will not rotate relative to the formation.
  • the bearing 6 with the centering function may be a centering bearing having a centering section of more than 200 mm, or may be or consist of two or more independent centering bearings.
  • rotating portion 72 and the fixed portion 71 may directly constitute the inner rotor and the outer stator of the bearing having the centering function.
  • the fixed sleeve 1 and the drive shaft assembly 2 are connected by a first thrust bearing 81 that is thrust upward and a second thrust bearing 82 that is thrust downward.
  • a thrust bearing 81 and a second thrust bearing 82 realize the displacement limitation of the drive shaft assembly 2 and the fixed sleeve 1 in the axial direction.
  • the deflection control mechanism further includes a hydraulic system 4, which includes a motor 42 A hydraulic pump 41, a power fluid line 43, and a return fluid line 44, a throttle valve (not shown) is provided on the power fluid line 43, and a hydraulic power accommodating cavity is provided on the wall of the fixed sleeve 1
  • a hydraulic system 4 which includes a motor 42 A hydraulic pump 41, a power fluid line 43, and a return fluid line 44
  • a throttle valve (not shown) is provided on the power fluid line 43
  • a hydraulic power accommodating cavity is provided on the wall of the fixed sleeve 1
  • the liquid return storage chamber 11 the electric motor 42 and the hydraulic pump 41 are disposed in the hydraulic power accommodating chamber, each cylinder 31 is in sealed communication with the hydraulic pump 41 through the power liquid line, and the power liquid line 43 passes through the liquid return line 44 and
  • the liquid storage chamber 11 communicates with each other, and the hydraulic pump 41 can provide power fluid for the driving piston 32.
  • the motor 42 drives the hydraulic pump 41 to input pressure fluid to the cylinder 31 through the power fluid line to drive the piston 32 is pushed out, so that the driving piston 32 extends out of the cylinder 31, and the pressure fluid throttled by the throttle valve in the power fluid line 43 flows into the return fluid storage chamber for storage via the return fluid line 44, that is, in the power fluid pipeline 43
  • the power fluid returns to the return fluid storage chamber 11 after passing through the throttle valve, which makes the extension operation of the driving piston 32 simple and convenient, and the setting of the throttle valve causes the pressure fluid to be damped during the flow to the return fluid storage chamber. In order to ensure that the power fluid line 43 has sufficient pressure.
  • the directional drilling device further includes a power system 5 including an energy transmission member, a circuit connector 53 provided at the upper end of the upper rotating portion 21, and a
  • the control circuit 54 and the measurement circuit 55 on the side wall the energy transmission member includes an energy output end 51 sleeved on the outer peripheral surface of the drive shaft assembly 2, and an energy receiving end 52 connected to the inner wall surface of the fixed sleeve 1 ,
  • the energy output terminal 51 is electrically connected to the circuit connector 53
  • the energy receiving terminal 52 is electrically connected to the control circuit 54 and the measurement circuit 55
  • the control circuit 54 is electrically connected to the motor 42, wherein the energy transmission part is a wireless energy transmission part, and the energy output end 51 is the wireless energy transmitting end, and the energy receiving end 52 is the wireless energy receiving end.
  • the energy is transmitted from the drive shaft assembly 2 to the fixed sleeve 1 through the energy transmission member.
  • the measuring circuit 55 can measure the high side of the tool, and the control circuit 54 can control each of the arranged driving hydraulic cylinders 3 to generate a specific hydraulic pressure according to the intended steering direction, so that it generates a resultant force away from the intended steering direction.
  • a voltage stabilizing circuit can be installed between the energy receiving end and other circuits.
  • the outer peripheral surface of the fixed sleeve 1 is provided with a connection member that can contact the formation and has an anti-rotation function, and the fixed sleeve 1 and the formation are in a relatively static state through the connection member.
  • the connecting member is a hydraulic pushing mechanism.
  • the hydraulic pushing mechanism includes an anti-rotation hydraulic cylinder 9 and a pushing member 10.
  • the anti-rotation piston can push the pusher 10 into contact with the formation, and the frictional force between the pusher 10 and the formation can rotate the fixed sleeve 1 to make the fixed sleeve 1 and the formation relatively stationary.
  • the deflection control mechanism further includes a hydraulic system 4, the hydraulic system 4 includes a hydraulic pump 41 connected to an electric motor 42, a power fluid line 43 and a return fluid line 44, the power fluid line 43 is provided with a throttle valve and a fixed sleeve
  • the cylinder wall of the cylinder 1 is provided with a hydraulic power accommodating cavity and a liquid return storage cavity 11, a motor 42 and a hydraulic pump 41 are disposed in the hydraulic power accommodating cavity, and each cylinder 31 is sealed with the hydraulic pump 41 through a power fluid line 43
  • the electric motor 42 drives the hydraulic pump 41 to input pressure fluid to the cylinder 31 through the power fluid line.
  • the driving piston 32 is pushed out, so that the driving piston 32 extends out of the cylinder 31, and the pressure fluid throttled by the throttle valve in the power liquid line 43 flows into the liquid return storage chamber through the liquid return line 44 for storage, that is, the power liquid line 43
  • the power fluid in the system returns to the liquid storage chamber 11 after passing through the throttle valve.
  • the anti-rotation hydraulic cylinder 9 communicates with the power fluid line 43 through the anti-rotation force line, that is, the use of the driving hydraulic cylinder 3 and the driving anti-rotation hydraulic cylinder 9
  • the same power fluid line 43 is driven, so that the overall structure of the directional drilling device is more reasonable, and the directional drilling device can have a smaller size.
  • each pushing member 10 Preferably, 1-2 anti-rotation hydraulic cylinders 9 are provided below each pushing member 10.
  • the connecting member is an anti-rotation roller (not shown in the figure).
  • the anti-rotation roller is easy to install and easy to use.
  • the lower end of the fixed sleeve 1 is provided with at least one of a contracting centralizing block, a gamma measuring device 12, an acoustic wave transmitter, and an acoustic wave receiver, wherein the contracting centralizing block, a gamma measuring device 12.
  • the installation positions of the sound wave transmitter and the sound wave receiver are the same.
  • the lower section of the force transmission member 33 is connected to the lower rotating portion 23 through a centralizing bearing (not shown).
  • the centralizing bearing is a cemented carbide centralizing bearing.
  • the rotor and the rotor The stator may be respectively embedded on the inner circumferential surface of the lower rotating portion 23 and the outer circumferential surface of the lower section of the force transmission member 33, the inner circumferential surface of the upper section of the force transmission member 33 is a curved surface, and each of the driving piston 32 and the force transmission member 33 The inner surface of the upper section abuts.
  • the upper rotating portion 21, the flexible section 22 and the lower rotating portion 23 are of an integrated structure, and the force transmission member 33 is sleeved outside the drive shaft assembly 2
  • the ring bracket, the lower end of the ring bracket extends downward and is in contact with the rotating part 72.
  • each driving hydraulic cylinder 3 can apply force to the force transmitting member 33, and the force transmitting member 33 is applied to the rotating part 72.
  • Rotating relative to the fixed portion 71 causes the rotating portion 72 to apply force to the drive shaft assembly 2 through the bearing 6, so that the drive shaft assembly 2 deflects relative to the fixed sleeve 1, thereby causing the drill bit 20 to deflect.
  • hydraulic pushing mechanism is located above the deflection control mechanism to ensure that the side of the fixed sleeve 1 close to the drill bit will not deflect relative to the ground.
  • the upper end of the lower rotating portion 23 is provided with a circular slot 231, and the lower end of the flexible section 22 is inserted into the circular slot 231 It is connected to the ring slot 231, that is, the drive shaft assembly 2 is a split structure, and the flexible section 22 and the upper rotating section 21, and the flexible section 22 and the lower rotating section 23 are detachable connections.
  • the lower end of the fixed sleeve 1 is in contact with the flexible section 22 so that the entire lower rotating portion 23 can be deflected relative to the fixed sleeve 1.
  • the drive shaft assembly 2 is a split structure
  • the fixed sleeve 1 is sleeved outside the flexible section 22, in order to facilitate the connection between the hydraulic pushing mechanism and the fixed sleeve 1, the hydraulic pushing mechanism is provided in the deflection control Below the mechanism to ensure that the hydraulic pushing mechanism can ensure that the fixed sleeve 1 will not rotate relative to the ground.
  • each driving hydraulic cylinder 3 can apply force to the force transmitting member 33, and the force transmission member 33 is applied to the rotating part 72 to rotate
  • the portion 72 rotates relative to the fixed portion 71, so that the rotating portion 72 applies force to the lower rotating portion 23 through the bearing 6, so that the drive shaft assembly 2 deflects relative to the fixed sleeve 1, thereby causing the drill bit 20 to deflect.
  • the force transmission member 33 includes an offset cylinder 331 and a force transmission shoe 332, wherein:
  • the offset cylinder 331 is sleeved outside the drive shaft assembly 2. Specifically, the offset cylinder 331 is sleeved outside the flexible section 22;
  • the power transmission tile 332 is connected to the driving piston 32, that is, each driving piston 32 is connected to the power transmission tile 332, the movement of the driving piston 32 can drive the power transmission tile 332 to push against the bias cylinder 331, and the bias cylinder 331 can drive and drive
  • the shaft assembly 2 is deflected relative to the fixed sleeve 1, that is, the drive piston 32 exerts a force on the drive shaft assembly 2 through the force transmission shoe 332 and the biasing cylinder 331 so that the drive shaft assembly 2 occurs relative to the fixed sleeve 1 deflection.
  • the offset cylinder 331 is disposed above the steering connection structure 7, and the offset cylinder 331 is connected to the drive shaft assembly 2 through a follower bearing to prevent the offset cylinder 331 from rotating under the drive of the drive shaft assembly 2.
  • the directional drilling device applies thrust to the force transmission member through each driving piston. Since the thrusts applied by the pistons in different directions are different, the resultant force in different directions and different magnitudes can be generated.
  • the thrust of the piston realizes the adjustment of the direction of the resultant force at the pushed point of the drive shaft assembly and the magnitude of the resultant force, so that the direction of the drive shaft and the degree of deflection can be controlled.
  • the control of the hole trajectory results in a high-precision well trajectory.
  • the drill bit is allowed to swing around the steering connection structure, making the drill bit easy to go out of the well.

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  • 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)

Abstract

La présente invention concerne un dispositif de forage directionnel comprenant au moins un manchon de fixation (1) et un mécanisme de commande de déviation, un ensemble arbre d'entraînement (2) étant agencé dans le manchon de fixation (1) d'une manière pénétrante ; l'ensemble arbre d'entraînement (2) peut dévier par rapport au manchon de fixation (1) ; le mécanisme de commande de déviation est agencé à l'intérieur du manchon de fixation (1) ; le mécanisme de commande de déviation comprend au moins un élément d'entraînement ; l'élément d'entraînement comprend au moins trois cylindres hydrauliques d'entraînement (3) ; chacun des cylindres hydrauliques d'entraînement (3) comprend un bloc-cylindres (31) et un piston d'entraînement (32) agencé à l'intérieur du bloc-cylindres (31) ; les pistons d'entraînement (32) peuvent se rapprocher ou s'éloigner d'un axe de l'ensemble arbre d'entraînement (2) ; et le mouvement de chaque piston d'entraînement (32) peut amener l'ensemble arbre d'entraînement (2) à dévier par rapport au manchon de fixation (1). Le dispositif de forage directionnel peut réaliser un taux d'accumulation plus élevé et n'a pas besoin de coopérer avec un trépan à jauge longue, de sorte que le trépan peut être facilement retiré d'un puits.
PCT/CN2019/124237 2018-12-10 2019-12-10 Dispositif de forage directionnel WO2020119671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811504768.7 2018-12-10
CN201811504768.7A CN109458134B (zh) 2018-12-10 2018-12-10 定向钻孔装置

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WO2020119671A1 true WO2020119671A1 (fr) 2020-06-18

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CN109458134B (zh) * 2018-12-10 2024-06-04 徐梓辰 定向钻孔装置
CN213450246U (zh) * 2019-06-06 2021-06-15 万晓跃 一种易造斜混合式旋转导向钻井系统
CN112211556B (zh) * 2019-07-09 2023-05-05 万晓跃 一种基于液压原理的静态指向旋转导向装置
CN110761712A (zh) * 2019-10-12 2020-02-07 中国海洋石油集团有限公司 一种提高柔性钻具造斜性能的造斜钻头
CN112855024B (zh) * 2019-11-27 2023-09-26 万晓跃 旋转导向钻井工具
CN111173452B (zh) * 2020-02-21 2024-04-19 万晓跃 一种夹心筒结构的静态偏置旋转导向钻井工具
CN213597871U (zh) * 2020-08-10 2021-07-02 万晓跃 短半径可控轨迹钻井工具
CN112729796B (zh) * 2020-12-24 2021-11-09 中国石油大学(北京) Pdc钻头造斜率影响因素测试系统及其测试方法

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CN105051316A (zh) * 2013-01-29 2015-11-11 普拉德研究及开发股份有限公司 高狗腿导向工具
CN107701107A (zh) * 2017-10-31 2018-02-16 中国科学院地质与地球物理研究所 一种静态内推靠铰接式高造斜率旋转导向工具及控制方法
CN108412425A (zh) * 2018-05-09 2018-08-17 华南师范大学 一种钻头导向式新型钻井工具
CN109458134A (zh) * 2018-12-10 2019-03-12 徐梓辰 定向钻孔装置
CN209586268U (zh) * 2018-12-10 2019-11-05 徐梓辰 定向钻孔装置

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