CN116201469A - Oilfield well drilling link motor and sleeve damage well short-radius horizontal drilling method - Google Patents
Oilfield well drilling link motor and sleeve damage well short-radius horizontal drilling method Download PDFInfo
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- CN116201469A CN116201469A CN202310465420.6A CN202310465420A CN116201469A CN 116201469 A CN116201469 A CN 116201469A CN 202310465420 A CN202310465420 A CN 202310465420A CN 116201469 A CN116201469 A CN 116201469A
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- well drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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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
- E21B4/006—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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
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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
- E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
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- 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
The application provides an oilfield well drilling link motor and a sleeve damage well short-radius horizontal drilling method, and relates to the oilfield well drilling field. The oilfield well drilling link motor comprises: a motor body and a transmission conversion assembly. The axial flow impeller member rotates to drive the pin pulling clutch member to operate, so that the pin pulling clutch member pulls out the rotating shaft member, the combination of the pin pulling clutch member and the rotating shaft member is released, the pin pulling clutch member is in an idle state, at the moment, the drill bit connecting seat can move or stop moving along with reverse spraying, further, reverse torque force of reverse spraying or too fast advancing speed is reduced, stress on a transmission part of a drilling link motor is increased, the condition of breaking of the transmission part of the motor is caused, the drilling link motor of the oil field well is driven by the axial flow impeller to break away from the connection part, and the transmission seat is in the idle state, so that the effect of protecting the drilling link motor of the oil field well is achieved.
Description
Technical Field
The application relates to the technical field of oilfield well drilling, in particular to an oilfield well drilling link motor and a casing damage well short-radius horizontal drilling method.
Background
Drilling tool motors, also called screw motors, are commonly used for drilling in oilfield wells, and are volumetric underground power drilling tools which convert hydraulic pressure energy into mechanical energy by taking drilling fluid as power. When mud pumped by the mud pump flows through the bypass valve to enter the motor, a certain pressure difference is formed between the inlet and the outlet of the motor, the rotor is pushed to rotate around the axis of the stator, and the rotating speed and the torque are transmitted to the drill bit through the universal shaft and the transmission shaft, so that the drilling operation is realized.
In the related art, a drilling tool for drilling a horizontal well by using a drilling link motor of an oil field well is liable to have a phenomenon of back spraying. The reverse spraying can generate opposite torque force when the oilfield well drilling link motor drills, at the moment, if the drilling work is continued, the transmission part of the drilling link motor is broken easily, the drilling work is affected, and when the drilling work is performed by using the drilling link motor, if the advancing speed is too high, the stress of the transmission part of the drilling link motor is increased, the transmission part of the drilling link motor is broken easily, and the problem is solved.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an oilfield well drilling link motor and a sleeve damage well short-radius horizontal drilling method, when the oilfield well drilling link motor encounters reverse spraying or the advancing speed is too high in drilling operation, the connecting transmission seat of the drill bit is driven by the axial flow impeller to separate from the connecting position, and the transmission seat is in an idling state at the moment, so that the oilfield well drilling link motor is protected.
In a first aspect, embodiments of the present application provide an oilfield well drilling link motor comprising: a motor body and a transmission conversion assembly.
The transmission conversion assembly comprises an axial flow connecting seat part, a rotating shaft part, an axial flow impeller part, a pin pulling clutch part, a positioning cylinder part and a drill bit connecting seat, wherein the axial flow connecting seat part is fixedly connected to the output end of the motor main body, the rotating shaft part is rotationally connected to the inside of the axial flow connecting seat part, the axial flow impeller part is rotationally connected to the top end of the rotating shaft part, external fluid can flow into the inside of the axial flow connecting seat part to drive the axial flow impeller part to rotate, the pin pulling clutch part is arranged in the axial flow connecting seat part, the inside of the pin pulling clutch part can be clamped into the outer wall of the upper end of the rotating shaft part and locked with the rotating shaft part, the positioning cylinder part is in threaded connection with the inside of the bottom end of the axial flow connecting seat part, the positioning cylinder part is pressed on the outer wall of the rotating shaft part, and the drill bit connecting seat is fixedly connected to the lower end of the rotating shaft part.
According to some embodiments of the application, the axial flow connection seat piece comprises an axial flow connection shell and a current collecting cover, wherein the outer wall of the axial flow connection shell is penetrated and provided with an inflow hole and an outflow hole at equal intervals, the inflow hole is positioned below the axial flow impeller piece, the outflow hole is positioned above the axial flow impeller piece, the current collecting cover is fixedly sleeved on the outer wall of the axial flow connection shell and is obliquely downwards arranged, and the current collecting cover covers the inflow hole.
According to some embodiments of the application, the rotating shaft piece comprises a rotating shaft, a waterproof bearing and a pressing sleeve, the inner ring of the waterproof bearing is fixedly sleeved on the rotating shaft, the outer ring of the waterproof bearing is fixedly inserted in the axial flow connection shell, the pressing sleeve is in threaded sleeve connection with the rotating shaft, the pressing sleeve is pressed on the upper side of the inner ring of the waterproof bearing, the positioning sleeve piece is pressed on the lower side of the outer ring of the waterproof bearing, the outer wall of the upper end of the rotating shaft is provided with clamping grooves at equal intervals, and the pin pulling clutch piece is clamped in the clamping grooves.
According to some embodiments of the present application, the pivot includes first axis body, second axis body and third axis body, the second axis body with third axis body fixed connection respectively in first axis body both ends, the block groove set up in first axis body outer wall, the second axis body sets up to the prismatic axle, the second axis body fixed peg graft in drill bit connecting seat upper end, axial flow impeller rotate the socket joint in third axis body.
According to some embodiments of the present application, the drill bit connecting seat includes transmission seat, connecting seat, first bolt and second bolt, the connecting seat upper end peg graft in the transmission seat lower extreme, first bolt runs through in proper order the transmission seat with the connecting seat, the transmission seat upper end is provided with the prism hole, the second axis body peg graft in the prism hole, the second bolt runs through in proper order the transmission seat with the second axis body.
According to some embodiments of the application, the spline groove is formed in the inner wall of the axial-flow connection shell, the outer wall of the pin-pulling clutch piece is slidably inserted into the spline groove, the supporting bearing bush is slidably inserted into the axial-flow connection shell and comprises a bearing bush body and a supporting ring, the supporting ring is fixedly connected to the bottom end of the bearing bush body, the top end of the bearing bush body supports the periphery of the lower side of the pin-pulling clutch piece, and the waterproof bearing outer ring supports the lower side of the supporting ring.
According to some embodiments of the application, the positioning barrel comprises a positioning barrel and a limiting ring, the limiting ring is fixedly sleeved at the bottom end of the positioning barrel, the positioning barrel is in threaded connection with the inside of the bottom end of the axial flow connection shell, and the positioning barrel supports the lower side of the outer ring of the waterproof bearing.
According to some embodiments of the application, the axial flow impeller comprises an axial flow impeller and a force application frame, the axial flow impeller is rotationally sleeved at the upper end of the rotating shaft, external fluid can flow into the axial flow connecting shell through the inflow hole to drive the axial flow impeller to rotate, fluid in the axial flow connecting shell flows out through the outflow hole, the force application frame is fixedly connected to the outer wall of the lower end of the axial flow impeller at equal intervals, and the force application frame can stir the pin pulling clutch piece to carry out clutch operation.
According to some embodiments of the application, the pin pulling clutch piece comprises a spline mounting cylinder, a fixing cylinder, a clamping block, a stirring mechanism and a compression spring, wherein the spline mounting cylinder is fixedly inserted into the axial flow connection shell, the fixing cylinder is fixedly connected with the inner wall of the spline mounting cylinder, the clamping block is slidably inserted into the fixing cylinder, the clamping block can be clamped into the clamping groove, the compression spring is arranged in the fixing cylinder, one end of the compression spring is tightly pressed to the clamping block, the stirring mechanism is arranged in the fixing cylinder, the stirring mechanism can drive the clamping block to move in the fixing cylinder, one side of the stirring mechanism is slidably penetrated into the side wall of the fixing cylinder, and the force application frame can stir the stirring mechanism.
According to some embodiments of the application, the inner wall of the spline mounting cylinder is fixedly connected with a sliding rod, and the clamping block is slidably connected to the sliding rod.
According to some embodiments of the application, the clamping block comprises a block body, a clamping interface is arranged on one side of the end of the block body, the clamping interface can be inserted into the clamping groove, and the side wall of the clamping interface can block the side wall of the clamping groove.
According to some embodiments of the present application, the toggle mechanism includes double-hinged plate, single-hinged plate, push rod and toggle frame, double-hinged plate one end articulate in spline installation section of thick bamboo inner wall, single-hinged plate one end articulate in the block, double-hinged plate with single-hinged plate relative one end articulates each other, push rod fixed connection in single-hinged plate is close to the lateral wall of double-hinged plate one end, toggle frame sliding connection in fixed section of thick bamboo lateral wall, toggle frame is located one side in the fixed section of thick bamboo can promote the push rod, the application of force frame can toggle the frame is located one side outside the fixed section of thick bamboo.
According to some embodiments of the application, the clamping block and the fixing cylinder are provided with a disassembly and adjustment mechanism, the disassembly and adjustment mechanism comprises a sliding cylinder, a sliding block, an adjusting screw and a limiting plate, one end of the sliding cylinder is fixedly connected to the clamping block, the sliding cylinder is in prismatic shape, the sliding block is arranged to be a prismatic block, the sliding block is in sliding connection with the sliding cylinder, one end of the adjusting screw rotates to penetrate through the outer wall of the spline mounting cylinder, the limiting plate is fixedly sleeved on the adjusting screw, the inner wall of the spline mounting cylinder can block the limiting plate, one end of the adjusting screw penetrates through the sliding cylinder in a sliding mode, and the adjusting screw penetrates through one end of the sliding cylinder in a threaded mode, and the compression spring is movably sleeved on the sliding cylinder.
In a second aspect, an embodiment of the present application further provides a method for drilling a casing damage well with a short radius horizontal drilling machine, using the oilfield well drilling link motor, including the following steps:
s001: preparing a construction tool, the construction tool comprising: the single-bend oilfield well drilling link motor, the double-bend oilfield well drilling link motor, the horizontal oilfield well drilling link motor, the flexible connection MWD, the titanium alloy large-inner diameter drill rod and the cement plug-free cementing tool;
s002: a whipstock is put in the middle of the sleeve above the sleeve damage point for windowing;
s003: using the single-bend oilfield well drilling link motor to incline to 5-6 degrees of well inclination, and gradually declining to a vertical well state to keep a distance of 5 meters from the original borehole;
s004: using the double-bend oilfield well drilling linking motor to match with the single-bend oilfield well drilling linking motor, and drilling an inclined well section into a target layer by deflecting;
s005: drilling a soft landing well section and a horizontal well section in a target layer by using a horizontal oil field well drilling link motor;
s006: putting a screen pipe, a cement-free plug graded well cementing tool, a sleeve and a releaser into a water layer passing through a road above the top of a well cementing and packing target layer or other layers and well sections needing to be fixed and sealed;
s007: the running tool is withdrawn, and cement paste above the releaser is circulated;
s008: are subjected to weather curing;
s009: and (5) recovering the well cementation rubber plug.
The beneficial effects of this application are: when the oil field drilling and connecting motor is used, the output end of the motor main body drives the pin pulling clutch piece, the pin pulling clutch piece drives the rotating shaft piece to rotate, the rotating shaft piece drives the drill bit connecting seat, the drill bit connecting seat drives the drill bit to work, when the situation that liquid is poured into the oil field drilling and connecting seat piece is in reverse spraying or the situation that liquid is formed due to too fast forward speed, the liquid drives the axial flow impeller piece to rotate, the axial flow impeller piece rotates to drive the pin pulling clutch piece to operate, the pin pulling clutch piece is enabled to pull out the rotating shaft piece, the pin pulling clutch piece and the rotating shaft piece are released from being combined, the pin pulling clutch piece is enabled to be in an idle state, at the moment, the drill bit connecting seat can move along with reverse spraying or stop moving, further reverse torque force or forward speed of reverse spraying is reduced, stress at a drilling and connecting motor transmission position is increased, the situation that the motor transmission position is broken occurs, the oil field drilling and connecting transmission seat of the drill bit is separated at the connection position under the driving of the axial flow impeller when the drilling operation is in reverse spraying or the forward speed is too fast, the effect of protecting the drilling and connecting motor of the well is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an oilfield well drilling link motor according to the present application;
FIG. 2 is a schematic perspective view of a transmission shift assembly according to the present application;
FIG. 3 is a schematic perspective view of an axial flow connection mount according to the present application;
FIG. 4 is a schematic perspective view of a shaft member according to the present application;
FIG. 5 is a schematic perspective view of a spindle according to the present application;
FIG. 6 is a schematic perspective view of a drill bit connection socket according to the present application;
FIG. 7 is a schematic perspective view of a support shoe according to the present application;
FIG. 8 is a schematic perspective view of an axial flow impeller according to the present application;
FIG. 9 is a schematic perspective view of a pin pulling clutch according to the present application;
FIG. 10 is a schematic perspective view of a snap block connection according to the present application;
FIG. 11 is a schematic perspective view of a toggle mechanism according to the present application;
fig. 12 is a schematic perspective view of a disassembly adjustment mechanism according to the present application.
Icon: 100-a motor body; 200-a transmission conversion assembly; 210-an axial flow connection mount; 211-an axial flow connection housing; 212-outflow aperture; 213-inlet aperture; 214-a collector cap; 215-spline grooves; 220-a shaft member; 221-rotating shaft; 2211—a first shaft body; 2212—a second shaft body; 2213—a third shaft; 222-waterproof bearings; 223-pressing the sleeve; 224-a snap groove; 230-an axial flow impeller member; 231-an axial flow impeller; 232-a force application frame; 240-pulling out the pin clutch; 241-spline mounting cylinder; 242-fixing the cylinder; 243-a clamping block; 2431-a block; 2432-card interface; 244-toggle mechanism; 2441-double hinged plate; 2442-single hinged plate; 2443-pushrod; 2444-toggle rack; 245-compressing a spring; 246-disassembly adjustment mechanism; 2461-slide cylinder; 2462-slider; 2463-adjusting screw; 2464-limiting plate; 247-slide bar; 250-positioning a barrel; 251-positioning a cylinder; 252-limiting rings; 260-a drill bit connection socket; 261-transmission seat; 262-connecting seats; 263-first plug pin; 264-prismatic holes; 265-a second latch; 270-supporting the bearing shell; 271-a bearing shell body; 272-support ring.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.
An oilfield well drilling link motor and a casing damage well short radius horizontal drilling method according to embodiments of the present application are described below with reference to the accompanying drawings.
Referring to fig. 1 to 12, an embodiment of the present application provides an oilfield well drilling link motor, including: the mud pumped by the motor main body 100 through the mud pump flows through the bypass valve to enter the motor, a certain pressure difference is formed at the inlet and the outlet of the motor, the rotor is pushed to rotate around the axis of the stator, and the rotating speed and the torque are transmitted to the drill bit through the universal shaft and the transmission shaft, so that the drilling operation is realized, and the motor main body is also called a screw drilling tool.
Referring to fig. 2, the transmission conversion assembly 200 includes an axial flow connection seat 210, a rotating shaft 220, an axial flow impeller 230, a pin pulling clutch 240, a positioning cylinder 250 and a drill bit connection seat 260, wherein the axial flow connection seat 210 is fixedly connected to an output end of the motor main body 100, the rotating shaft 220 is rotatably connected to the axial flow connection seat 210, the axial flow impeller 230 is rotatably connected to a top end of the rotating shaft 220, an external fluid can flow into the axial flow connection seat 210 to drive the axial flow impeller 230 to rotate, the pin pulling clutch 240 is installed inside the axial flow connection seat 210, the pin pulling clutch 240 can be clamped inside an outer wall of an upper end of the rotating shaft 220 and lock the rotating shaft 220, the positioning cylinder 250 is in threaded connection inside the bottom end of the axial flow connection seat 210, the positioning cylinder 250 is pressed on the outer wall of the rotating shaft 220, and the drill bit connection seat 260 is fixedly connected to a lower end of the rotating shaft 220. When the oil field drilling device is used, the output end of the motor main body 100 drives the pin pulling clutch piece 240, the pin pulling clutch piece 240 drives the rotating shaft piece 220 to rotate, the rotating shaft piece 220 drives the drill bit connecting seat 260, the drill bit connecting seat 260 drives the drill bit to work, when reverse spraying is met or liquid is poured into the drill bit connecting seat 210 to form fluid due to too high advancing speed, the fluid enters the drill shaft connecting seat, the axial flow impeller piece 230 is pushed by the fluid to rotate, the axial flow impeller piece 230 rotates to drive the pin pulling clutch piece 240 to operate, the pin pulling clutch piece 240 pulls out the rotating shaft piece 220, the combination of the pin pulling clutch piece 240 and the rotating shaft piece 220 is released, the pin pulling clutch piece 240 is in an idle state, at the moment, the drill bit connecting seat 260 can move along with reverse spraying or stop moving, further, reverse torque force or too high advancing speed of reverse spraying is reduced, stress at a drilling link motor transmission position is increased, break of the motor transmission position occurs, the drilling link motor of the drill shaft is in reverse spraying or the advancing speed is too high, at the moment, the connection transmission position of the drill bit is driven by the impeller to run out, the axial flow shaft connection position is separated, the transmission position is met, the driving of the impeller is in the state, the oil field is in the idle state, the well drilling link motor is protected, and the oil field is in the idle state, and the oil field, the effect is well.
Referring to fig. 3, the axial flow connection seat 210 includes an axial flow connection housing 211 and a collecting cover 214, wherein the outer wall of the axial flow connection housing 211 is provided with an inflow hole 213 and an outflow hole 212 at equal intervals, the inflow hole 213 is located below the axial flow impeller 230, the outflow hole 212 is located above the axial flow impeller 230, the collecting cover 214 is fixedly sleeved on the outer wall of the axial flow connection housing 211, the collecting cover 214 is arranged obliquely downwards, and the collecting cover 214 covers the inflow hole 213. When the reverse spray is met or liquid is poured into the container to form fluid due to the too high forward speed, the fluid is collected through the collecting cover 214 and enters the axial flow connection housing 211 through the inflow hole 213, the fluid flowing into the axial flow connection housing 211 drives the axial flow impeller member 230 to rotate, the flowing fluid flows out through the outflow hole 212, and the axial flow impeller member 230 drives the pin pulling clutch member 240 to operate.
Referring to fig. 2-4, the rotating shaft 220 includes a rotating shaft 221, a waterproof bearing 222 and a compression sleeve 223, an inner ring of the waterproof bearing 222 is fixedly sleeved on the rotating shaft 221, an outer ring of the waterproof bearing 222 is fixedly sleeved in the axial-flow connection housing 211, the compression sleeve 223 is in threaded sleeve connection with the rotating shaft 221, the compression sleeve 223 is compressed on an upper side of the inner ring of the waterproof bearing 222, the positioning cylinder 250 is compressed on a lower side of the outer ring of the waterproof bearing 222, engaging grooves 224 are formed in an outer wall of an upper end of the rotating shaft 221 at equal intervals, and the pin pulling clutch member 240 is engaged with the engaging grooves 224. After the pin pulling clutch member 240 pulls out the engaging groove 224, the rotating shaft 221 is idle, the rotating shaft 221 rotates through the waterproof bearing 222, the positioning barrel member 250 supports the waterproof bearing 222, and the waterproof bearing 222 supports the rotating shaft 221 through the pressing sleeve 223, so that the drill bit connecting seat 260 is supported. The positioning cylinder 250 comprises a positioning cylinder 251 and a limiting ring 252, the limiting ring 252 is fixedly sleeved at the bottom end of the positioning cylinder 251, the positioning cylinder 251 is in threaded connection with the inside of the bottom end of the axial flow connection housing 211, and the positioning cylinder 251 supports the lower side of the outer ring of the waterproof bearing 222. When the pin pulling clutch member 240 is detached, the positioning cylinder 251 is rotated, the positioning cylinder 251 withdraws from the axial flow connection housing 211 through the screw transmission principle, the support of the positioning cylinder 251 to the waterproof bearing 222 is released, the pin pulling clutch member 240, the rotating shaft member 220 and the axial flow impeller member 230 synchronously withdraw from the axial flow connection housing 211, and then the pin pulling clutch member 240 is detached and replaced.
Referring to fig. 5, the rotating shaft 221 includes a first shaft body 2211, a second shaft body 2212 and a third shaft body 2213, the second shaft body 2212 and the third shaft body 2213 are respectively and fixedly connected to two ends of the first shaft body 2211, the clamping groove 224 is formed in an outer wall of the first shaft body 2211, the second shaft body 2212 is configured as a prismatic shaft, the second shaft body 2212 is fixedly inserted into an upper end of the drill bit connecting seat 260, and the axial flow impeller 230 is rotatably sleeved on the third shaft body 2213. After the pin pulling clutch member 240 is engaged with the engaging groove 224, the pin pulling clutch member 240 rotates along with the axial flow connection housing 211, the pin pulling clutch member 240 drives the first shaft body 2211 through the engaging groove 224, the second shaft body 2212 rotates along with the first shaft body 2211, and the drill bit connecting seat 260 rotates along with the second shaft body 2212.
Referring to fig. 6, the drill connecting seat 260 includes a transmission seat 261, a connecting seat 262, a first bolt 263 and a second bolt 265, wherein the upper end of the connecting seat 262 is inserted into the lower end of the transmission seat 261, the first bolt 263 sequentially penetrates through the transmission seat 261 and the connecting seat 262, a prismatic hole 264 is formed at the upper end of the transmission seat 261, a second shaft 2212 is inserted into the prismatic hole 264, and the second bolt 265 sequentially penetrates through the transmission seat 261 and the second shaft 2212. When the connecting seat 262 and the transmission seat 261 are disassembled, the first bolt 263 is pulled out to release the connection between the connecting seat 262 and the transmission seat 261, the connecting seat 262 is pulled out from the transmission seat 261, the second bolt 265 is pulled out to release the connection between the transmission seat 261 and the second shaft body 2212, and the transmission seat 261 is taken down from the second shaft body 2212.
Referring to fig. 2-7, a spline groove 215 is formed in an inner wall of the axial flow connection housing 211, an outer wall of the pin pulling clutch member 240 is slidably inserted into the spline groove 215, a supporting bush 270 is slidably inserted into the axial flow connection housing 211, the supporting bush 270 includes a bush body 271 and a supporting ring 272, the supporting ring 272 is fixedly connected to a bottom end of the bush body 271, a top end of the bush body 271 supports a periphery of an underside of the pin pulling clutch member 240, and an outer ring of the waterproof bearing 222 supports the underside of the supporting ring 272. The bearing bush body 271 supports the pin pulling clutch member 240, so that the relative positions of the pin pulling clutch member 240 and the clamping groove 224 are determined, the pin pulling clutch member 240 and the clamping groove 224 can be conveniently clamped, and when the rotating shaft 221 is pulled out, the pin pulling clutch member 240 is driven to be pulled out along the spline groove 215 through the clamping groove 224 on the rotating shaft 221.
Referring to fig. 8, the axial flow impeller member 230 includes an axial flow impeller 231 and a force application frame 232, the axial flow impeller 231 is rotatably sleeved at the upper end of the rotating shaft 221, external fluid can flow into the axial flow connection housing 211 through the inflow hole 213 to drive the axial flow impeller 231 to rotate, fluid in the axial flow connection housing 211 flows out through the outflow hole 212, the force application frame 232 is fixedly connected to the outer wall of the lower end of the axial flow impeller 231 at equal intervals, and the force application frame 232 can stir the pin pulling clutch member 240 to perform clutch operation. The fluid flowing into the axial flow connection housing 211 drives the axial flow impeller 231 to rotate, the flowing fluid flows out through the outflow hole 212, the axial flow impeller 231 drives the force application frame 232, and the force application frame 232 drives the pin pulling clutch 240 to perform clutch operation.
Referring to fig. 9, when the oil field well drilling link motor is used to control the pin pulling clutch, an external force is provided by the rotation of the axial flow impeller, and when the oil field well drilling link motor is used, the environment is complex, if the gap between the environment inside the pin pulling clutch and the outside is large, external foreign matters are easy to enter the oil field well drilling link motor, and how to maintain a relatively stable environment inside the pin pulling clutch is a technical problem to be solved when the pin pulling clutch is arranged.
In order to solve the technical problem, the technical scheme adopted by the invention is that the pin pulling clutch piece 240 comprises a spline mounting cylinder 241, a fixing cylinder 242, a clamping block 243, a toggle mechanism 244 and a compression spring 245, wherein the spline mounting cylinder 241 is fixedly inserted into the axial flow connection shell 211, the fixing cylinder 242 is fixedly connected to the inner wall of the spline mounting cylinder 241, the clamping block 243 is slidably inserted into the fixing cylinder 242, the clamping block 243 can be clamped into the clamping groove 224, the compression spring 245 is arranged in the fixing cylinder 242, one end of the compression spring 245 is tightly pressed on the clamping block 243, the toggle mechanism 244 is arranged in the fixing cylinder 242, the toggle mechanism 244 can drive the clamping block 243 to move into the fixing cylinder 242, one side of the toggle mechanism 244 slidably penetrates through the side wall of the fixing cylinder 242, and the force application frame 232 can toggle the toggle mechanism 244. The inner wall of the spline mounting cylinder 241 is fixedly connected with a slide rod 247, and the clamping block 243 is slidably connected with the slide rod 247.
Referring to fig. 10, the engaging block 243 includes a block 2431, a locking port 2432 is disposed on one side of an end of the block 2431, the locking port 2432 can be inserted into the engaging groove 224, and a sidewall of the locking port 2432 can block a sidewall of the engaging groove 224. The clamping interface 2432 is inserted into the clamping groove 224, and the rest of the blocks 2431 are positioned in the clamping groove 224, so that when the blocks 2431 move, the blocks are automatically clamped under the action of the elasticity of the compression spring 245.
Referring to fig. 11, the toggle mechanism 244 includes a dual-hinge plate 2441, a single-hinge plate 2442, a push rod 2443 and a toggle frame 2444, one end of the dual-hinge plate 2441 is hinged on the inner wall of the spline mounting cylinder 241, one end of the single-hinge plate 2442 is hinged in the clamping block 243, opposite ends of the dual-hinge plate 2441 and the single-hinge plate 2442 are hinged to each other, the push rod 2443 is fixedly connected to the side wall of the single-hinge plate 2442, which is close to one end of the dual-hinge plate 2441, the toggle frame 2444 is slidably connected to the side wall of the fixed cylinder 242, the toggle frame 2444 is located on one side of the fixed cylinder 242 and can push the push rod 2443, and the force applying frame 232 can toggle the toggle frame 2444 on the outer side of the fixed cylinder 242. When the axial flow impeller 231 drives the force application frame 232, the force application frame 232 gradually compresses the stirring frame 2444, the stirring frame 2444 slides along the side wall of the fixed barrel 242, the stirring frame 2444 pushes the push rod 2443, the push rod 2443 pushes the single hinge plate 2442 to overturn, the double hinge plate 2441 overturns along with the single hinge plate 2442, the single hinge plate 2442 pulls the clamping block 243, the clamping block 243 leaves the clamping groove 224, the clamping of the clamping block 243 and the clamping groove 224 is released, at the moment, the rotating shaft 221 can idle, when the situation that liquid is poured into the fixed barrel 242 due to reverse spraying or too fast advancing speed is met, the drill bit connecting seat 260 can also idle in clutch, when the situation that the stress of the drill bit connecting seat 260 is relatively high due to reverse torque or too fast advancing speed is reduced, the situation that the stress of the axial flow connecting shell 211 and the spline mounting barrel 241 is relatively high is reduced, the stress of a drilling link motor is further reduced, the situation that the motor transmission is broken is caused, the inside of the fixed barrel 242 is formed by sliding everywhere, the gap of the inside the fixed barrel 242 is relatively stable, and the situation that the external foreign matters enter the fixed barrel is reduced.
Referring to fig. 12, in the related art, a pin pulling clutch member of a motor is driven by the engagement of a locking block and a locking groove, but before the pin pulling clutch member is detached from a rotating shaft, each locking block needs to be pulled out of the locking groove, and in the process, an external force needs to be continuously applied to control the locking block.
For this reason, the inventors have made long-term practical studies to solve the technical problem. Specifically, a disassembly adjusting mechanism 246 is disposed between the clamping block 243 and the fixed cylinder 242, the disassembly adjusting mechanism 246 includes a sliding cylinder 2461, a sliding block 2462, an adjusting screw 2463 and a limiting plate 2464, one end of the sliding cylinder 2461 is fixedly connected in the clamping block 243, the sliding cylinder 2461 is internally provided with a prismatic shape, the sliding block 2462 is provided with a prismatic block, the sliding block 2462 is slidingly connected in the sliding cylinder 2461, one end of the adjusting screw 2463 rotates and penetrates through the outer wall of the spline mounting cylinder 241, the limiting plate 2464 is fixedly sleeved on the adjusting screw 2463, the inner wall of the spline mounting cylinder 241 can block the limiting plate 2464, one end of the adjusting screw 2463 slides and penetrates through the sliding cylinder 2461, one end of the adjusting screw 2463 penetrates through the sliding cylinder 2461 to be threaded and penetrates through the sliding block 2462, and the compression spring 245 is movably sleeved on the sliding cylinder 2461. When the pull pin clutch member 240 is detached, the positioning cylinder 251 is rotated, the positioning cylinder 251 withdraws from the axial flow connection housing 211 through the screw transmission principle, the support of the positioning cylinder 251 to the waterproof bearing 222 is released, the pull pin clutch member 240, the rotating shaft member 220 and the axial flow impeller member 230 synchronously withdraw from the axial flow connection housing 211, after the pull pin clutch member 240, the rotating shaft member 220 and the axial flow impeller member 230 are detached, the axial flow impeller 231 is firstly removed, the adjusting screw 2463 is rotated, the adjusting screw 2463 is screwed into the sliding block 2462 through the screw transmission principle, the adjusting screw 2463 is gradually retracted into the sliding cylinder 2461, the corresponding sliding block 2462 drives the sliding cylinder 2461, the sliding cylinder 2461 drives the clamping block 243 to retract into the fixed cylinder 242, the clamping block 243 is separated from the clamping groove 224, and the clamping block 243 can be always in a state of being separated from the clamping state by manually adjusting the adjusting mechanism 246 only by adjusting the front stage when the pull pin clutch member 240 is detached, and then the manual support is not needed, the manual support is needed, the manual pull pin clutch member 240 can be pulled out, the clamping block is further, the clamping block is controlled, the clamping position of the clamping block is controlled, the clamping block is not to be prevented from being separated from the clamping state by the clamping block, the clamping block is not to take time, the clamping time is convenient, and the problem is solved.
The embodiment of the application also provides a method for drilling a short radius horizontal well of a casing damage well, which is performed by using an oilfield well drilling link motor and comprises the following steps:
s001: preparing a construction tool, wherein the construction tool comprises: a single-bend oilfield well drilling link motor, a double-bend oilfield well drilling link motor, a horizontal oilfield well drilling link motor, a flexible connection MWD, a titanium alloy large-inner diameter drill rod and a cement plug-free cementing tool;
s002: a whipstock is put in the middle of the sleeve above the sleeve damage point for windowing;
s003: using a single-bend oilfield well drilling link motor to incline to 5-6 degrees of well inclination, and gradually declining to a straight well state to keep a distance of 5 meters from the original borehole;
s004: the double-bend oilfield well drilling linking motor is matched with the single-bend oilfield well drilling linking motor, and a deflecting drill is used for making an inclined well section to enter a target layer;
s005: drilling a soft landing well section and a horizontal well section in a target layer by using a horizontal oilfield well drilling link motor;
s006: putting a screen pipe, a cement-free plug graded well cementing tool, a sleeve and a releaser into a water layer passing through a road above the top of a well cementing and packing target layer or other layers and well sections needing to be fixed and sealed;
s007: the running tool is withdrawn, and cement paste above the releaser is circulated;
s008: are subjected to weather curing;
s009: and (5) recovering the well cementation rubber plug.
The method is suitable for treating and recovering the casing damage well of an oil-gas field, for the well which is damaged by casing damage and can not be recovered through conventional overhaul, the method is implemented to enable the abandoned casing damage well to continue to recover production, the casing damage well is quickly reformed by using a well field of the casing damage well and a well shaft with no casing damage at the upper part, a well drilling tool and a well drilling method of the short-radius horizontal well, a casing damage point is avoided, a new well is drilled at the side, a vertical well is adjusted after the casing damage well is avoided by 5 meters, a complex stratum can be drilled when the casing damage well reaches the top of a target layer, an ultra-short radius or short-radius well type well is drilled at the target layer, and the purpose of recovering production or yield is achieved.
Specifically, the working principle of the oilfield well drilling link motor and the sleeve damage well short-radius horizontal drilling method is as follows: when in use, the output end of the motor main body 100 drives the axial flow connection housing 211 to rotate, the pin pulling clutch piece 240 rotates along with the axial flow connection housing 211, the pin pulling clutch piece 240 drives the first shaft body 2211 through the clamping groove 224, the second shaft body 2212 rotates along with the first shaft body 2211, the drill bit connecting seat 260 rotates along with the second shaft body 2212 to drive the drill bit to work, when the condition that fluid is poured into the axial flow connection housing 211 due to the over-fast forward speed or the reverse blowout is met, the fluid is collected through the collecting cover 214 and enters the axial flow connection housing 211 through the inflow hole 213, the fluid flowing into the axial flow connection housing 211 drives the axial flow impeller 231 to rotate, the flowing fluid flows out through the outflow hole 212, the axial flow impeller 231 drives the force application frame 232, the pin pulling clutch piece 240 to carry out clutch operation, the pin pulling clutch piece 240 is pulled out through the clamping groove 224, the joint of the pin pulling clutch piece 240 and the first shaft body 2211 is released, the drill bit connecting seat 260 can move along with the reverse blowout or stop moving at the moment, the reverse blowout moment, the reverse torque force of the reverse blowout is reduced or the forward speed is over-fast forward speed is met, the transmission condition that the motor is connected at the drill shaft is disconnected, the reverse shaft is disconnected, the transmission condition of the reverse shaft is met, the transmission condition of the reverse shaft is broken, and the transmission condition of the reverse shaft is broken is realized, and the transmission condition of the reverse shaft is broken, and the transmission condition of the reverse shaft is connected at the forward and the forward speed of the drilling condition is realized.
When the axial flow impeller 231 drives the force application frame 232, the force application frame 232 gradually compresses the stirring frame 2444, the stirring frame 2444 slides along the side wall of the fixed barrel 242, the stirring frame 2444 pushes the push rod 2443, the push rod 2443 pushes the single hinge plate 2442 to overturn, the double hinge plate 2441 overturns along with the single hinge plate 2442, the single hinge plate 2442 pulls the clamping block 243, the clamping block 243 leaves the clamping groove 224, the clamping of the clamping block 243 and the clamping groove 224 is released, at the moment, the rotating shaft 221 can idle, when the situation that liquid is poured into the fixed barrel 242 due to reverse spraying or too fast advancing speed is met, the drill bit connecting seat 260 can also idle in clutch, when the situation that the stress of the drill bit connecting seat 260 is relatively high due to reverse torque or too fast advancing speed is reduced, the situation that the stress of the axial flow connecting shell 211 and the spline mounting barrel 241 is relatively high is reduced, the stress of a drilling link motor is further reduced, the situation that the motor transmission is broken is caused, the inside of the fixed barrel 242 is formed by sliding everywhere, the gap of the inside the fixed barrel 242 is relatively stable, and the situation that the external foreign matters enter the fixed barrel is reduced.
When the pull pin clutch member 240 is detached, the positioning cylinder 251 is rotated, the positioning cylinder 251 withdraws from the axial flow connection housing 211 through the screw transmission principle, the support of the positioning cylinder 251 to the waterproof bearing 222 is released, the pull pin clutch member 240, the rotating shaft member 220 and the axial flow impeller member 230 synchronously withdraw from the axial flow connection housing 211, after the pull pin clutch member 240, the rotating shaft member 220 and the axial flow impeller member 230 are detached, the axial flow impeller 231 is firstly removed, the adjusting screw 2463 is rotated, the adjusting screw 2463 is screwed into the sliding block 2462 through the screw transmission principle, the adjusting screw 2463 is gradually retracted into the sliding cylinder 2461, the corresponding sliding block 2462 drives the sliding cylinder 2461, the sliding cylinder 2461 drives the clamping block 243 to retract into the fixed cylinder 242, the clamping block 243 is separated from the clamping groove 224, and the clamping block 243 can be always in a state of being separated from the clamping state by manually adjusting the adjusting mechanism 246 only by adjusting the front stage when the pull pin clutch member 240 is detached, and then the manual support is not needed, the manual support is needed, the manual pull pin clutch member 240 can be pulled out, the clamping block is further, the clamping block is controlled, the clamping position of the clamping block is controlled, the clamping block is not to be prevented from being separated from the clamping state by the clamping block, the clamping block is not to take time, the clamping time is convenient, and the problem is solved.
The above is only an example of the present application, and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Claims (10)
1. Oilfield well drilling link motor, including the motor main part, its characterized in that still includes:
the transmission conversion assembly comprises an axial flow connecting seat part, a rotating shaft part, an axial flow impeller part, a pin pulling clutch part, a positioning cylinder part and a drill bit connecting seat, wherein the axial flow connecting seat part is fixedly connected with the output end of the motor main body, the rotating shaft part is rotationally connected with the axial flow connecting seat part, the axial flow impeller part is rotationally connected with the top end of the rotating shaft part, external fluid can flow into the axial flow connecting seat part to internally drive the axial flow impeller part to rotate, the pin pulling clutch part is arranged in the axial flow connecting seat part, the pin pulling clutch part can be clamped into the outer wall of the upper end of the rotating shaft part and locks the rotating shaft part, the positioning cylinder part is in threaded connection with the inner part of the bottom end of the axial flow connecting seat part, the positioning cylinder part is tightly pressed on the outer wall of the rotating shaft part, and the drill bit connecting seat is fixedly connected with the lower end of the rotating shaft part.
2. The oilfield well drilling link motor of claim 1, wherein the axial flow connection base member comprises an axial flow connection housing and a current collecting cover, wherein the outer wall of the axial flow connection housing is provided with an inflow hole and an outflow hole at equal intervals in a penetrating manner, the inflow hole is positioned below the axial flow impeller member, the outflow hole is positioned above the axial flow impeller member, the current collecting cover is fixedly sleeved on the outer wall of the axial flow connection housing and is obliquely downwards arranged, and the current collecting cover covers the inflow hole.
3. The oilfield well drilling link motor according to claim 2, wherein the rotating shaft member comprises a rotating shaft, a waterproof bearing and a pressing sleeve, the waterproof bearing inner ring is fixedly sleeved on the rotating shaft, the waterproof bearing outer ring is fixedly inserted in the axial flow connection shell, the pressing sleeve is in threaded sleeve connection with the rotating shaft, the pressing sleeve is pressed on the upper side of the waterproof bearing inner ring, the positioning sleeve is pressed on the lower side of the waterproof bearing outer ring, clamping grooves are formed in the outer wall of the upper end of the rotating shaft at equal intervals, and the pin pulling clutch member is clamped in the clamping grooves.
4. The oilfield well drilling link motor according to claim 3, wherein the rotating shaft comprises a first shaft body, a second shaft body and a third shaft body, the second shaft body and the third shaft body are respectively and fixedly connected to two ends of the first shaft body, the clamping groove is formed in the outer wall of the first shaft body, the second shaft body is a prismatic shaft, the second shaft body is fixedly inserted into the upper end of the drill bit connecting seat, and the axial flow impeller member is rotationally sleeved on the third shaft body.
5. The oilfield well drilling link motor according to claim 4, wherein the drill bit connecting seat comprises a transmission seat, a connecting seat, a first bolt and a second bolt, the upper end of the connecting seat is inserted into the lower end of the transmission seat, the first bolt sequentially penetrates through the transmission seat and the connecting seat, a prismatic hole is formed in the upper end of the transmission seat, the second shaft body is inserted into the prismatic hole, and the second bolt sequentially penetrates through the transmission seat and the second shaft body.
6. The oilfield well drilling link motor of claim 3, wherein the axial flow connection housing has a spline groove formed therein, the outer wall of the pin-pulling clutch is slidably inserted into the spline groove, the axial flow connection housing has a support bushing slidably inserted therein, the support bushing comprises a bushing body and a support ring, the support ring is fixedly connected to the bottom end of the bushing body, the top end of the bushing body supports the periphery of the underside of the pin-pulling clutch, and the waterproof bearing outer ring supports the underside of the support ring.
7. The oilfield well drilling link motor according to claim 3, wherein the positioning barrel comprises a positioning barrel and a limiting ring, the limiting ring is fixedly sleeved at the bottom end of the positioning barrel, the positioning barrel is in threaded insertion connection with the inside of the bottom end of the axial flow connection shell, and the positioning barrel supports the lower side of the waterproof bearing outer ring.
8. The oilfield well drilling link motor according to claim 3, wherein the axial flow impeller member comprises an axial flow impeller and a force application frame, the axial flow impeller is rotatably sleeved at the upper end of the rotating shaft, external fluid can flow into the axial flow connection housing through the inflow hole to drive the axial flow impeller to rotate, fluid in the axial flow connection housing flows out through the outflow hole, the force application frame is fixedly connected to the outer wall of the lower end of the axial flow impeller at equal intervals, and the force application frame can stir the pin pulling clutch member to perform clutch operation.
9. The oilfield well drilling link motor according to claim 8, wherein the pin pulling clutch comprises a spline mounting cylinder, a fixing cylinder, a clamping block, a toggle mechanism and a compression spring, the spline mounting cylinder is fixedly inserted into the axial flow connection shell, the fixing cylinder is fixedly connected to the inner wall of the spline mounting cylinder, the clamping block is slidingly inserted into the fixing cylinder, the clamping block can be clamped into the clamping groove, the compression spring is arranged in the fixing cylinder, one end of the compression spring is tightly pressed to the clamping block, the toggle mechanism is arranged in the fixing cylinder, the toggle mechanism can drive the clamping block to move into the fixing cylinder, one side of the toggle mechanism is slidingly inserted into the side wall of the fixing cylinder, and the force application frame can toggle the toggle mechanism.
10. A method of casing lost circulation horizontal drilling using an oilfield well drilling link motor of any one of claims 1-9, comprising the steps of:
s001: preparing a construction tool, the construction tool comprising: the single-bend oilfield well drilling link motor, the double-bend oilfield well drilling link motor, the horizontal oilfield well drilling link motor, the flexible connection MWD, the titanium alloy large-inner diameter drill rod and the cement plug-free cementing tool;
s002: a whipstock is put in the middle of the sleeve above the sleeve damage point for windowing;
s003: using the single-bend oilfield well drilling link motor to incline to 5-6 degrees of well inclination, and gradually declining to a vertical well state to keep a distance of 5 meters from the original borehole;
s004: using the double-bend oilfield well drilling linking motor to match with the single-bend oilfield well drilling linking motor, and drilling an inclined well section into a target layer by deflecting;
s005: drilling a soft landing well section and a horizontal well section in a target layer by using a horizontal oil field well drilling link motor;
s006: putting a screen pipe, a cement-free plug graded well cementing tool, a sleeve and a releaser into a water layer passing through a road above the top of a well cementing and packing target layer or other layers and well sections needing to be fixed and sealed;
s007: the running tool is withdrawn, and cement paste above the releaser is circulated;
s008: are subjected to weather curing;
s009: and (5) recovering the well cementation rubber plug.
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| CN202310465420.6A CN116201469B (en) | 2023-04-27 | 2023-04-27 | Oilfield well drilling link motor and sleeve damage well short-radius horizontal drilling method |
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| CN202310465420.6A CN116201469B (en) | 2023-04-27 | 2023-04-27 | Oilfield well drilling link motor and sleeve damage well short-radius horizontal drilling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116641668A (en) * | 2023-07-27 | 2023-08-25 | 大庆辰平钻井技术服务有限公司 | Drilling fluid circulating sand removal equipment and horizontal well half-way well cementation completion method |
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| CN116201469B (en) | 2023-07-21 |
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