CN109162642A - A kind of power guid casing pipe running device for soft stratum deflecting hole section - Google Patents
A kind of power guid casing pipe running device for soft stratum deflecting hole section Download PDFInfo
- Publication number
- CN109162642A CN109162642A CN201811096535.8A CN201811096535A CN109162642A CN 109162642 A CN109162642 A CN 109162642A CN 201811096535 A CN201811096535 A CN 201811096535A CN 109162642 A CN109162642 A CN 109162642A
- Authority
- CN
- China
- Prior art keywords
- guiding
- casing
- drill
- transmission shaft
- soft stratum
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 230000008439 repair process Effects 0.000 claims abstract description 27
- 230000008450 motivation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 239000003818 cinder Substances 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000013049 sediment Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
A kind of power guid casing pipe running device for soft stratum deflecting hole section, including for guiding cased guiding to repair drill, the screw motor of drilling power is provided, the curved deformation drilling rod of guiding sleeve, lock or unlock casing can be recycled setting device, wherein, screw motor repairs drill through the guiding of transmission shaft driving hollow structure, the oriented connector connection deformation drilling rod lower end in screw motor upper end, the lower contact of setting device can be recycled through the connection of setting device connector for deformation drilling rod upper end, setting device can be recycled equipped with central tube, drill is repaired to guiding by the mud being passed through in central tube is negotiable, and it is discharged by the bottom end that guiding repairs drill.The present invention has the scarfing cinder of bottom hole power, measurement while drilling angle, the big curved function of rigidity casing of guidance.It solves the problems, such as the soft stratum deep camber deflecting hole setting of casing that routine techniques cannot achieve, can satisfy the requirement for the stratum setting of casing drilling that geological state is bad and geological conditions situation is particularly poor, have a good application prospect.
Description
Technical field
The present invention relates to a kind of geology drilling apparatus, under especially a kind of power guid for soft stratum deflecting hole section
Casing bit belongs to drilling technique field.
Background technique
Currently, the casing tripping in method of petroleum and geological prospecting drilling process has very much, but the prior art cannot all fit
For soft stratum, the casing tripping in of deep camber deflecting hole section.Soft stratum refers to weak soil, muck soil, composite soil, miscellaneous fill
The geological stratification that equal special soils are constituted, the Physical and mechanical properties of soft stratum are low.The prior art can not solve soft stratum yeast
The difficult point of rate deflecting hole section tripping in casing is as follows: 1, the vertical depth of shallow-layer horizontal well is small, in the shorter feelings of vertical drilling distance
It just needs to be transitioned into lateral aperture from vertical hole under condition, therefore the curvature of inclination section is larger, and the set pipe stiffness for being used for retaining wall is big,
It can not directly be bent by the traction of float collar float plug in the biggish deflecting hole of curvature and enter deflecting hole section；2, bottom hole sediment
More, existing Casing running technology is unable to complete scarfing cinder, is blocked so as to cause drill bit by sediment.
Summary of the invention
The purpose of the present invention is to provide one kind to have the big rigidity casing bending of the scarfing cinder of bottom hole power, guidance and drilling tool recycling
The power guid casing pipe running device for soft stratum deflecting hole section of function.
Problem of the present invention is solved with following technical proposals:
A kind of power guid casing pipe running device for soft stratum deflecting hole section, including following portions being arranged from the bottom to top
Part: for guiding cased guiding to repair drill, providing the curved deformation brill of screw motor, guiding sleeve of drilling power
Bar, lock or unlock casing setting device can be recycled, wherein screw motor repairs hole drill through the guiding of transmission shaft driving hollow structure
Head, the oriented connector connection deformation drilling rod lower end in screw motor upper end, deformation drilling rod upper end connects recyclable through setting device connector
The lower contact of setting device can be recycled setting device equipped with central tube, repair hole drill to guiding by the mud being passed through in central tube is negotiable
Head, and be discharged by the bottom end that guiding repairs drill.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the deformation drilling rod is hollow structure
Elongate rod, deform drilling rod length be conventional drill rod joint length, deform the outer diameter of drilling rod by guidance tripping in casing in
0.5-0.8 times of diameter is equipped with MWD steering tool in deformation drilling rod.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, described setting device can be recycled includes center
Pipe, outer housing, lower core pipe, top connection, lower contact and locking mechanism, the upper and lower side of outer housing are separately connected top connection, lower contact,
Central tube is slidably matched with top connection；Locking mechanism is equipped with slide mass and block teeth, and slide mass is slidably matched with outer housing axis hole, tooth
Block is mounted in the skewed slot of slide mass, and block teeth are corresponding with the block teeth window position being arranged at outer shell walls, the upper and lower end of slide mass
It is separately connected central tube lower end and lower core pipe upper end, lower core pipe is slidably matched with lower contact axis hole.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the block teeth be wedge shape, block teeth and tiltedly
The face that groove bottom is in contact is dove-tail, block teeth with the cross-sectional shape with the matched tilt angle in skewed slot bottom surface, skewed slot
Matching is plugged in skewed slot, and the outer surface of block teeth is arc surface, and outer surface is equipped with groove.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, central tube are equipped with and are threadedly coupled with it
Anti-lost ring, anti-lost ring is between top connection and slide mass.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the guiding repair drill by cone
Boot segment and cylindrical gauge section constitute, guiding, which is repaired drill periphery and is equipped with, returns stock tank, and guiding is repaired drill and is equipped with up and down
Penetrating bit central hole.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the screw motor power include fixed
Son, rotor, universal shaft, curved shell and transmission mechanism, transmission mechanism are equipped with transmission shaft, lower case and the bearing group of hollow structure,
The upper and lower side of universal shaft is separately connected rotor, transmission shaft, and the upper and lower end of curved shell is separately connected stator and lower case, universal shaft
In curved shell, transmission shaft is hollow shaft, and transmission shaft is located in curved shell and lower case, and the camber of curved shell is 3-4 degree, spiral shell
The series of bar motor is 1-2.5 grades.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section is equipped on the top of transmission shaft to transmission
The transmission shaft side opening of mud is passed through in axis.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the bearing group are located at lower case and pass
Between moving axis, transmission shaft bearing group includes upper TC bearing, lower TC bearing, and the thrust bearing between upper and lower TC bearing.
The above-mentioned power guid casing pipe running device for soft stratum deflecting hole section, the central tube upper end, which is leant out, to be connect
Head, central tube upper end are equipped with internal screw thread.
Device of the present invention is a kind of casing tripping in device of shallow-layer horizontal well drilling, have the scarfing cinder of bottom hole power, with
Bore measurement angle, the big curved function of rigidity casing of guidance.The features of the present invention is as follows compared with prior art: being pumped into device
Mud turns round screw motor, repairs drill for guiding and provides rotary motive power, the mud scour hole bottom of flowing will be on bottom hole sediment
It returns to outside hole, reduces inclination section tripping in resistance；The elongated rod structure of drilling rod is deformed, rigidity is small, flexible, set that can be big by rigidity
Pipe brings inclination section into, completes the tripping in of inclination section casing；Drill not only alternative traditional floating boots effect is repaired, but also can crept into
It completes to repair hole in the process；Setting device can be recycled in drilling process by casing positive lock, make casing and drilling tool associated movement；Casing
Locking mechanism unlock, can withdraw drilling tool after decentralization in place.Each part mentioned above organically combines, and solving routine techniques cannot achieve
Soft stratum deep camber deflecting hole setting of casing problem, can satisfy the ground that geological state is bad and geological conditions situation is particularly poor
The requirement of layer setting of casing drilling, has a good application prospect.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of screw motor；
Fig. 3 is the partial enlarged view in Fig. 2 at A；
Fig. 4 is the structural schematic diagram of transmission mechanism；
Fig. 5 is the structural schematic diagram that setting device can be recycled；
Fig. 6 is the perspective view of block teeth；
The structural schematic diagram of Fig. 7 slide mass；
Fig. 8 is the bottom view of Fig. 7；
Fig. 9 is the structural schematic diagram that guiding repairs drill；
Figure 10 is the bottom view of Fig. 9.
Each label in figure are as follows: 1, guiding repair drill, 1-1, boot segment, 1-3,1-2, gauge section return stock tank, 1-4, drill bit
2-6, centre bore, 2, screw motor, 2-1, stator, 2-2, rotor, 2-3, universal shaft, 2-4, curved shell, 2-5, upper TC bearing stop
Thrust bearing, 2-7, lower TC bearing, 2-8, lower case, 2-9, transmission shaft, 2-10, transmission shaft side opening, 3, orientation joint, 4, deformation brill
Bar, 5, MWD steering tool, 6, setting device connector, 7, setting device, 7-1, central tube, 7-2, top connection, 7-3, shell can be recycled
Body, 7-3-1, block teeth window, 7-4, anti-lost ring, 7-5, slide mass, 7-5-1, skewed slot, 7-6, block teeth, 7-7, lower core pipe, 7-8, under connect
Head, 8, casing, 9, casing joint.
Specific embodiment
Referring to Fig. 1, casing pipe running device of the present invention includes following components being arranged from the bottom to top: being drawn for substituting floating boots
It leads screw motor 2, guiding sleeve that cased guiding repairs drill 1, provides drilling power for setting of casing and angle bending occurs
Deformation drilling rod 4, lock or unlock casing setting device 7 can be recycled.Wherein, screw motor is through transmission shaft driving hollow structure
Guiding repairs drill and drives casing rotation, and the oriented connection of the connector 3 deformation drilling rod lower end in screw motor upper end deforms drilling rod upper end
Setting device can be recycled equipped with central tube, by what is be passed through in central tube in the lower contact that setting device can be recycled through the connection of setting device connector 6
Mud is negotiable to repair drill to guiding, and is discharged by the bottom end that guiding repairs drill.The deformation drilling rod 4 is hollow structure
Elongate rod, hollow structure for being passed through mud, slim-lined construction be in order to guarantee to deform the small stiffness of drilling rod, easily-deformable, can smoothly by
Casing brings deflecting hole section into.The length for deforming drilling rod is the joint length (usually 10 meters) of conventional drill rod, deforms the outer of drilling rod
Diameter is 0.5-0.8 times of internal diameter of the casing guided, is equipped with MWD steering tool 5 in deformation drilling rod.Hole drill is repaired in guiding
Before head enters deflecting hole section, the angular deviation between drill bit and drilling can be detected by MWD steering tool.
Referring to Fig. 1-Fig. 4, screw motor 2 by stator 2-1, rotor 2-2, universal shaft 2-3, transmission shaft 2-9, curved shell 2-4,
It is formed with transmission mechanism；Transmission mechanism is equipped with transmission shaft 2-9, lower case 2-8 and the bearing group of hollow structure.Stator upper end and fixed
It is connected to connector, stator lower end is connect with curved shell, and rotor is located in stator.Curved shell lower end connects lower case.Universal shaft one
End is connect with rotor, and the other end and transmission axis connection, transmission shaft is hollow structure, is equipped on the top of transmission shaft into transmission shaft
It is passed through the transmission shaft side opening 2-10 of mud.Mud drives rotor rotation and then drives universal shaft, transmission shaft rotation.It is big to realize
Curvature deflecting, the camber of curved shell are 3-4 degree, and the series of screw motor is 1-2.5 grades.Use small series screw motor be for
Own dimensions are reduced as far as possible on the basis of meeting soft stratum drilling power demand.Bearing group is located at lower case and transmission shaft
Between, transmission shaft bearing group includes upper TC bearing 2-5, lower TC bearing 2-7, and the thrust bearing 2- between upper and lower TC bearing
6。
Referring to Fig. 1 and Fig. 9, Figure 10, guiding is repaired drill 1 and is connect with transmission shaft lower thread, rotates with transmission shaft.Guiding
It repairs drill to be made of the boot segment 1-1 of cone and cylindrical gauge section 1-2, guiding repairs drill equipped with transparent
Centre bore, guiding repair drill periphery be equipped with return stock tank 1-3.Above structure can be by mud through bit body inflow hole bottom, and bottom hole is heavy
Slag is carried by the mud of big flow and returns to aperture on stock tank through returning, and completes the scarfing cinder effect of bottom hole.Return stock tank and gauge section cylinder
The intersection of face intersection also has the function of repairing hole.
Referring to Fig. 1 and Fig. 5-8, setting device 7 can be recycled and be built in casing 8, lower end and 9 screw thread of casing joint connect
It connects, a retaining ring built in casing joint, setting device shell lower end outer surface, which can be recycled, an annular convex platform, and boss is seated retaining ring
On, prevent setting incomplete situation down tube from falling.It includes central tube 7-1, outer housing 7-3, lower core pipe 7- that setting device, which can be recycled,
7, top connection 7-2, lower contact 7-8 and locking mechanism.The upper and lower side of outer housing is threadedly coupled top connection, lower contact, center respectively
Pipe is slidably matched with top connection, and central tube upper end leans out top connection, and central tube upper end is equipped with internal screw thread.Locking mechanism is equipped with sliding
Body 7-5 and block teeth 7-6.Slide mass is slidably matched with outer housing axis hole, and block teeth are mounted in the skewed slot 7-5-1 of slide mass, block teeth
It is corresponding with the position for the block teeth window 7-3-1 being arranged at outer shell walls, the upper and lower end of slide mass be separately connected central tube lower end and
Lower core pipe upper end, lower core pipe are hollow structure, and lower core pipe is slidably matched with lower contact axis hole.The tilt angle of skewed slot bottom surface is opposite
The angle of axis is 5 ° -7 °, and block teeth are wedge shape, and the face that block teeth are in contact with skewed slot bottom surface has and the matched inclination in skewed slot bottom surface
Angle, the cross-sectional shape of skewed slot are dove-tail, and block teeth matching is plugged in skewed slot, and the outer surface of block teeth is arc surface, should
Extrados is bonded with the matching of the inner wall of casing, and the outer surface of block teeth is equipped with groove.Central tube is equipped with and is threadedly coupled with it
Anti-lost ring 7-4, anti-lost ring is between top connection and slide mass.Lower contact is hollow structure, the lower end of lower contact and setting device
The threaded upper ends of connector 6 connect.
The present invention in use, will first can be recycled setting device and casing carry out it is setting, to reach casing and setting device can be recycled
The purpose combined closely.Setting step are as follows: by casing and casing joint screwed connection, setting device merging casing will can be recycled
It is interior；Central tube is pushed using external force, central tube, which pushes, drives slide mass to move down, and then block teeth is pushed to be moved radially outwards, directly
It is fitted closely to block teeth and casing, completes setting procedure at this time.Successively tripping in guiding repairs drill, screw rod horse after the completion of setting
It reaches, deform drilling rod, MWD steering tool, casing setting with setting device can be recycled, the position of tripping in is then needed according to casing
By root tripping in casing, until the top orifice sleeve in place, is fixed at this time, is unsealed by the tripping in of bottom casing.Tripping in
Journey, guiding repair drill will enter inclination section before, be passed through Pressure Slurry, detection pipe string tripping in process tool face angle to central tube
Tool face azimuth is adjusted to calibration zero-bit by rotating forward drilling rod if occurring to deviate with tripping in markers zero setting by the variation of generation；Tool
Pressure Slurry is passed through after stereoscopic strata condition inclination section casing tripping in one or several, Pressure Slurry drives the rotor of screw motor
Rotation, rotor are repaired drill through transmission shaft band action-oriented and are rotated, be oriented to the revolution for repairing drill and washing away for mud acts on simultaneously,
To which bottom hole sediment to be easily discharged out of the hole, so that casing can smoothly enter into deflecting hole section under the guidance of described device；When casing is with brill
After having tripping in place, need to unlock casing；Unlocking process are as follows: tripping in drilling rod makes drilling rod connect central tube upper end female thread, by hole
Outer casing grips, and moves up slide mass in such a way that strength lifts, and then withdraw block teeth, and above mentioning drilling rod later will
Setting device, screw motor, drill bit propose outside hole together.
Claims (10)
1. a kind of power guid casing pipe running device for soft stratum deflecting hole section, it is characterised in that: including it is following by down toward
The component of upper setting: for guiding cased guiding to repair drill (1), the screw motor (2) for providing drilling power, guide sleeves
Manage curved deformation drilling rod (4), lock or unlock casing setting device (7) can be recycled, wherein screw motor drives through transmission shaft
The guiding of hollow structure repairs drill, and the oriented connector in screw motor upper end (3) connection deformation drilling rod lower end deforms drilling rod upper end
Setting device can be recycled equipped with central tube, by being passed through in central tube in the lower contact that setting device can be recycled through the connection of setting device connector (6)
Mud it is negotiable repair drill to guiding, and be discharged by the bottom end that guiding repairs drill.
2. the power guid casing pipe running device according to claim 1 for soft stratum deflecting hole section, it is characterised in that:
Deformation drilling rod (4) is the elongate rod of hollow structure, and the length for deforming drilling rod is the joint length of conventional drill rod, deforms drilling rod
Outer diameter by 0.5-0.8 times of casing inner diameter of guidance tripping in, be equipped with MWD steering tool (5) in deformation drilling rod.
3. the power guid casing pipe running device according to claim 2 for soft stratum deflecting hole section, it is characterised in that:
It is described that setting device can be recycled includes central tube (7-1), outer housing (7-3), lower core pipe (7-7), top connection (7-2), lower contact (7-
8) and locking mechanism, the upper and lower side of outer housing are separately connected top connection, lower contact, and central tube is slidably matched with top connection；Locking
Mechanism is equipped with slide mass (7-5) and block teeth (7-6), and slide mass is slidably matched with outer housing axis hole, and block teeth are mounted on slide mass
In skewed slot (7-5-1)；Block teeth are corresponding with the block teeth window position (7-3-1) being arranged at outer shell walls, the upper and lower end point of slide mass
Not Lian Jie central tube lower end and lower core pipe upper end, lower core pipe is slidably matched with lower contact axis hole.
4. the power guid casing pipe running device according to claim 3 for soft stratum deflecting hole section, it is characterised in that:
The block teeth are wedge shape, and the face that block teeth are in contact with skewed slot bottom surface has and the matched tilt angle in skewed slot bottom surface, the cross of skewed slot
Cross sectional shape is dove-tail, and block teeth matching is plugged in skewed slot, and the outer surface of block teeth is arc surface, and outer surface is equipped with tooth
Line.
5. the power guid casing pipe running device according to claim 4 for soft stratum deflecting hole section, it is characterised in that:
Central tube is equipped with the anti-lost ring (7-4) being threadedly coupled with it, and anti-lost ring is between top connection and slide mass.
6. the power guid casing pipe running device according to claim 5 for soft stratum deflecting hole section, it is characterised in that:
The guiding is repaired drill (1) and is made of the gauge section (1-2) of the boot segment (1-1) of cone and cylinder, and guiding repairs hole drill
Head periphery, which is equipped with, to be returned stock tank (1-3), and guiding repairs drill equipped with transparent bit central hole (1-4).
7. the power guid casing pipe running device according to claim 6 for soft stratum deflecting hole section, it is characterised in that:
The screw motor power includes stator (2-1), rotor (2-2), universal shaft (2-3), curved shell (2-4) and transmission mechanism, is passed
Motivation structure is equipped with transmission shaft (2-9), bearing group and the lower case (2-8) of hollow structure, and the upper and lower side of universal shaft, which is separately connected, to be turned
Son, transmission shaft, the upper and lower end of curved shell are separately connected stator and lower case, and universal shaft is located in curved shell, and transmission shaft is hollow
Axis, transmission shaft are located in curved shell and lower case, and the camber of curved shell is 3-4 degree, and the series of screw motor is 1-2.5 grades.
8. the power guid casing pipe running device according to claim 7 for soft stratum deflecting hole section, it is characterised in that:
The transmission shaft side opening (2-10) that mud is passed through into transmission shaft is equipped on the top of transmission shaft.
9. the power guid casing pipe running device according to claim 8 for soft stratum deflecting hole section, it is characterised in that:
For the bearing group between lower case and transmission shaft, transmission shaft bearing group includes upper TC bearing (2-5), lower TC bearing (2-7),
And the thrust bearing (2-6) between upper and lower TC bearing.
10. the power guid casing pipe running device according to claim 9 for soft stratum deflecting hole section, feature exist
In: the central tube upper end leans out top connection, and central tube upper end is equipped with internal screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096535.8A CN109162642B (en) | 2018-09-19 | Power guiding casing pipe running device for inclined hole section of weak stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096535.8A CN109162642B (en) | 2018-09-19 | Power guiding casing pipe running device for inclined hole section of weak stratum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162642A true CN109162642A (en) | 2019-01-08 |
| CN109162642B CN109162642B (en) | 2024-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108201A (en) * | 2023-07-26 | 2023-11-24 | 中国矿业大学(北京) | Directional drilling device with controllable curvature and drilling method |
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| 刘睿全;: "中心通缆钻杆及其在煤矿井下定向钻进中的应用", 探矿工程(岩土钻掘工程), vol. 40, no. 05, pages 44 - 47 * |
| 李孟;唐中原;张卫东;: "可回收套管钻井关键技术及其应用", 石油机械, vol. 44, no. 06, pages 47 - 51 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108201A (en) * | 2023-07-26 | 2023-11-24 | 中国矿业大学(北京) | Directional drilling device with controllable curvature and drilling method |
| CN117108201B (en) * | 2023-07-26 | 2024-04-02 | 中国矿业大学(北京) | Directional drilling device with controllable curvature and drilling method |
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