CN115788302A - Directional whipstock for geological drilling - Google Patents
Directional whipstock for geological drilling Download PDFInfo
- Publication number
- CN115788302A CN115788302A CN202310069682.0A CN202310069682A CN115788302A CN 115788302 A CN115788302 A CN 115788302A CN 202310069682 A CN202310069682 A CN 202310069682A CN 115788302 A CN115788302 A CN 115788302A
- Authority
- CN
- China
- Prior art keywords
- control oil
- pipeline
- oil return
- head
- oil
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention belongs to the technical field of geological drilling, and particularly discloses a directional whipstock for geological drilling, which comprises a drill stem, a drill bit, a head short section and a steering control oil system, wherein the drill stem is connected with the drill bit through a hydraulic system; the head of the drill stem is hinged with the tail of the head short section, and a hinged position is a hinged shaft; the drill bit is arranged at the head of the head short section; the steering control oil system comprises two groups of oil systems which are symmetrical with each other, and the symmetrical plane is superposed with the axis of the drill column; when the steering control oil system controls the head short section to rotate around the articulated shaft relative to the drill string through hydraulic oil, one group of oil systems drives the head short section to rotate, the oil return amount of the other group of oil systems changes along with the rotation of the head short section, and the inclination angle of the head short section is determined by observing the oil return change. The invention can flexibly carry out deflecting operation with different angles, and solves the problems that the existing deflecting equipment can not flexibly adjust the deflecting angle, needs to obtain a larger angle of inclination through repeated putting and recovery, and has poor flexibility.
Description
Technical Field
The invention belongs to the technical field of geological drilling, and particularly relates to a directional whipstock for geological drilling.
Background
In the geological drilling process, due to the facts that a drilling machine is not installed correctly or sinks and displaces unevenly, drilling pressure in construction is not appropriate, soft rock strata and hard rock strata are alternate, rock strata incline and the like, a drill hole is prone to being deviated, and a well completion process is affected. The deviation of the drilling hole may cause unreal obtained geological data, and the ore body is lost, thinned or thickened, so that the expected exploration purpose cannot be achieved, even hole accidents such as drill rod breaking, drill hole collapse and the like can be caused, the drilling hole is scrapped, and a large amount of manpower and material resources are wasted, so that the deviation of the drilling hole needs to be prevented and corrected by using a whipstock to control the change of the drilling hole in the spatial position.
Chinese patent publication No. CN109538121A discloses a portable whipstock. According to the data measured by the inclinometer, the drill rod is directly connected with the drill rod locking collar, so that the whipstock is in a natural drooping state. According to the principle that one side of the outer pipe of the whipstock is overweight, the opening direction of the guide chute can be judged to be consistent with the inclined direction of the drill hole, and therefore the opening orientation of the guide chute can be judged according to the inclined direction measured by the inclinometer. The rotary drill rod rotates to adjust the opening direction of the chute guide groove, and after the direction needing deflecting is determined, the vertical shaft is controlled to be pressed down rapidly. When the vertical shaft is pressed down quickly, firstly, the whipstock can be lowered to the bottom of the hole, so that the ground gripping structure at the lower end of the outer pipe is pricked into the bottom of the hole, and the chute guide groove is fixed; secondly, the shearing pin can be cut off to separate the inner pipe from the outer pipe. And then slowly lowering the drilling tool to enable the drill bit to descend along the deflection chute until the drill bit reaches a deflecting position, and then deflecting. After the deflecting is completed, the drill rod lock collar is clamped by the inner blocking platform, and the inner pipe and the outer pipe are carried out of the well hole together. The invention can complete the drilling deflection at one time.
However, the above-mentioned technical solutions have the following problems: the slope of leading the chute can not be adjusted, consequently can't adjust the angle of deflecting in a flexible way, need obtain great inclination through transferring and retrieving many times, and the flexibility is poor.
Disclosure of Invention
The invention provides a directional whipstock for geological drilling, which can flexibly perform whipstock operation at different angles and aims to solve the problems that the conventional whipstock equipment cannot flexibly adjust the angle of whipstock, needs to obtain a larger inclination angle through repeated putting and recovering and is poor in flexibility.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a directional whipstock for geological drilling comprises a drill string, a drill bit, a head short section and a steering control oil system; the head of the drill stem is hinged with the tail of the head short section, and a hinged position is a hinged shaft; the drill bit is arranged at the head of the head short section; the steering control oil system comprises two groups of oil systems which are symmetrical with each other, and the symmetrical plane is superposed with the axis of the drill column; when the steering control oil system controls the head short section to rotate around the articulated shaft relative to the drill string through hydraulic oil, one group of oil systems drives the head short section to rotate, the oil return amount of the other group of oil systems changes along with the rotation of the head short section, and the inclination angle of the head short section is determined by observing the oil return change.
Adopt above-mentioned technical scheme, can carry out the job of deflecting of different angles in a flexible way, solve the angle that current deflecting equipment can't adjust the deflecting in a flexible way, need obtain great inclination through transferring and retrieving many times, problem that the flexibility is poor.
Further, the steering control oil system comprises a hydraulic cylinder, a piston, a control oil supply pipeline and a control oil return pipeline which are all arranged in the drill string, wherein the oil inlet end of the hydraulic cylinder is communicated with the control oil supply pipeline, and the oil return end is communicated with the control oil return pipeline; the piston is matched with the hydraulic cylinder, one end of the piston is positioned in the hydraulic cylinder, and the other end of the piston is connected with the head short section; through the business turn over of control oil in the control pneumatic cylinder, the flexible of control oil promotion piston, the piston promotes the rotation of head nipple joint around the articulated shaft to change the drilling direction of whipstock.
Furthermore, one end of the control oil supply pipeline and one end of the control oil return pipeline are communicated with the hydraulic cylinder, and the other end of the control oil supply pipeline and the other end of the control oil return pipeline are communicated with ground equipment; an oil supply valve is arranged above the ground of the control oil supply pipeline, and an oil return valve is arranged above the ground of the control oil return pipeline; the piston slides in the pneumatic cylinder, can shelter from control oil return pipe, through the flexible volume that changes the piston, can change the degree of sheltering from control oil return pipe.
Furthermore, a plurality of capillary pipelines which are connected in parallel are connected between the control oil return pipeline and the hydraulic cylinder, the positions of the pistons are different, and the number of the shielded capillary pipelines is different.
Furthermore, in the new technical scheme, the oil return pipeline is controlled to be a capillary pipeline; the number of the shielding capillary pipelines is different when the piston positions are different; an oil supply valve is arranged above the ground of the oil supply pipeline, an oil return valve is arranged on the capillary pipeline near the ground, and any capillary pipeline can be closed through the oil return valve.
Adopt above-mentioned technical scheme, judge the angle of inclination of head nipple joint through observing whether every capillary channel has the oil return, it is low to the stability requirement of control oil pressure.
Furthermore, the geological drilling directional whipstock further comprises a power oil supply pipeline and a power oil return pipeline, wherein the power oil supply pipeline and the power oil return pipeline penetrate through the drill string and the head short section and are connected with the drill bit to provide power for the drill bit; one end of the control oil supply pipeline is communicated with the hydraulic cylinder, and the other end of the control oil supply pipeline is communicated with the power oil supply pipeline.
Further, an oil supply valve is arranged on the control oil supply pipeline.
By adopting the technical scheme, the inclination of the whipstock can be directly controlled by taking oil from the power oil supply pipeline, but the depth of the oil supply valve cannot be too deep, otherwise, the transmission of control signals is influenced.
Furthermore, according to the new technical scheme, a throttle valve is arranged in the control oil supply pipeline, the control oil return pipeline is a capillary pipeline, one end of the capillary pipeline is communicated with the hydraulic cylinder, the other end of the capillary pipeline is communicated with the ground, the positions of the pistons are different, and the number of the shielded capillary pipelines is different; an oil return valve is arranged on the capillary pipeline near the ground, and any capillary pipeline can be closed through the oil return valve.
By adopting the technical scheme, the control oil supply pipeline slowly takes oil from the power oil supply pipeline through the throttle valve, so that the influence on the power oil is extremely small, and the influence of the hydraulic fluctuation of the power oil on the control oil is also extremely small.
Further, the drill bit comprises a hydraulic motor and a milling shoe, power oil provides power for the hydraulic motor, and the hydraulic motor drives the milling shoe to rotate.
Furthermore, the parts of the power oil supply pipeline and the power oil return pipeline between the drill string and the head nipple are hoses.
The invention has the following beneficial effects:
the invention can flexibly carry out the deflecting operation with different angles, and solves the problems that the deflecting angle of the existing deflecting equipment can not be flexibly adjusted, a larger inclined angle is obtained by repeated putting and recovering, and the flexibility is poor. In addition, the invention provides various technical schemes, which are convenient for the technicians in the field to select and use according to the actual operation conditions.
Drawings
FIG. 1 is a schematic diagram of a directional whipstock for geological drilling according to example 1 of the present invention;
FIG. 2 is a schematic view of a steering control oil system according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a steering control oil system according to embodiment 2 of the present invention;
FIG. 4 is a schematic view of a directional whipstock for geological drilling according to example 3 of the present invention;
FIG. 5 is a schematic view of a steering control oil system according to embodiment 3 of the present invention;
fig. 6 is a schematic view of a steering control oil system according to embodiment 4 of the present invention.
In the figure: 100. a drill string; 200. a drill bit; 210. a hydraulic motor; 220. milling a shoe; 300. a head nipple; 410. a hydraulic cylinder; 420. a piston; 430. controlling an oil supply line; 440. controlling an oil return line; 450. an oil supply valve; 460. a capillary channel; 470. a throttle valve; 500. hinging a shaft; 600. a power oil supply line; 610. a power oil return line; 620. a hose.
Detailed description of the preferred embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 2, the invention discloses a directional whipstock for geological drilling, which comprises a drill string 100, a head sub 300, a drill bit 200 and a steering control oil system. The head of the drill string 100 is hinged to the tail of the head sub 300 through a hinge shaft 500, and the drill bit 200 is mounted at the head of the head sub 300. The steering control oil system comprises two sets of oil systems that are symmetrical to each other, the plane of symmetry coinciding with the axis of the drill string 100. When the steering control oil system controls the head short section 300 to rotate around the articulated shaft 500 relative to the drill string 100 through hydraulic oil, one group of oil systems drives the head short section 300 to rotate, the oil return amount of the other group of oil systems changes along with the rotation of the head short section 300, and the inclination angle of the head short section 300 is determined by observing the oil return change.
The steering control oil system comprises a hydraulic cylinder 410, a piston 420, a control oil supply pipeline 430 and a control oil return pipeline 440 which are all arranged in the drill string 100, wherein the oil inlet end of the hydraulic cylinder 410 is communicated with the control oil supply pipeline 430, and the oil return end is communicated with the control oil return pipeline 440. Piston 420 and pneumatic cylinder 410 cooperation, one end is located pneumatic cylinder 410, and the other end is connected with head nipple 300. Through the business turn over of control oil in the control pneumatic cylinder 410, control oil promotes the flexible of piston 420, and piston 420 promotes head nipple 300 and rotates around articulated shaft 500 to change the drilling direction of whipstock.
Examples
Referring to fig. 1 to 2, in the present embodiment, one end of a control oil supply conduit 430 and a control oil return conduit 440 communicates with the hydraulic cylinder 410, and the other end leads to the ground equipment. The control oil supply line 430 has an oil supply valve 450 above the ground, and the control oil return line 440 has an oil return valve above the ground. The piston 420 slides in the cylinder 410, and can block the control oil return pipe 440, and the degree of blocking the control oil return pipe 440 can be changed by changing the amount of expansion and contraction of the piston 420. Further, a plurality of capillary channels 460 connected in parallel are connected between the control oil return channel 440 and the hydraulic cylinder 410, and the number of the capillary channels 460 blocked is different when the position of the piston 420 is different.
During the deflecting operation, the drill string 100 is first rotated by surface equipment, and the direction of inclination of the head sub 300 rotating around the hinge shaft 500 can be determined by observing the direction of the surface part of the drill string 100. After the direction is adjusted, the ground equipment supplies oil to the two control oil supply pipelines 430 of the steering control oil system until the control oil return pipeline 440 returns oil stably, and the inclination direction and the inclination angle of the head pup joint 300 can be judged according to the oil return amount of the control oil return pipelines 440 on two sides. And closing the oil return valve on one side to prevent the control oil on the side from returning, so as to increase the oil pressure, and driving the piston 420 to extend outwards to change the inclination angle of the head nipple 300. When the inclination angle of the head pup joint 300 changes, the piston 420 on the other side retracts, so that the shielding degree of the piston 420 on the control oil return pipeline 440 changes, the oil return amount changes, and the current inclination angle of the head pup joint 300 can be known by observing the change of the oil return amount on the side. When the inclination angle of the head pup joint 300 reaches a preset value, the oil supply valve 450 and the oil return valve on two sides are closed, so that the control oil quantity in the steering control oil system on two sides is fixed, the inclination angle of the head pup joint 300 is further fixed, and then the deflecting operation is carried out.
Examples
Referring to fig. 3, in the present embodiment, one end of a control oil supply conduit 430 and a control oil return conduit 440 communicates with the hydraulic cylinder 410, and the other end leads to the ground equipment. Control oil return line 440 is a capillary line 460. The control oil supply pipe 430 is provided with an oil supply valve 450 above the ground, and a capillary pipe 460 near the ground is provided with an oil return valve through which any capillary pipe 460 can be closed.
The inclination angle of the head sub 300 is determined by observing whether each capillary channel 460 returns oil, and the requirement on stability of oil pressure is low.
Examples
Referring to fig. 4 to 5, the present embodiment further includes a power oil supply pipeline 600 and a power oil return pipeline 610, wherein the power oil supply pipeline 600 and the power oil return pipeline 610 penetrate through the drill string 100 and the head sub 300 and are connected with the drill bit 200 to provide power for the drill bit 200. The control oil supply conduit 430 has one end communicating with the hydraulic cylinder 410 and the other end communicating with the power oil supply conduit 600, and supplies the control oil to the hydraulic cylinder 410 through the power oil supply conduit 600. The control oil supply line 430 is provided with an oil supply valve 450. Further, the drill 200 includes a hydraulic motor 210 and a milling shoe 220, the hydraulic motor 210 is powered by the power oil, and the milling shoe 220 is driven by the hydraulic motor 210 to rotate. Further, the portion of the power oil supply pipeline 600 and the power oil return pipeline 610 between the drill string 100 and the head sub 300 is a hose 620.
This embodiment can control the inclination of the whipstock by drawing oil directly from the power oil supply conduit 600, but the depth of the supply valve 450 cannot be too deep, otherwise the transmission of the control signal is affected.
Examples
Referring to fig. 6, this embodiment also includes a power oil supply conduit 600 and a power oil return conduit 610, wherein the power oil supply conduit 600 and the power oil return conduit 610 extend through the drill string 100 and the head sub 300 and are connected to the drill bit 200 to provide power to the drill bit 200. The control oil supply conduit 430 has one end communicating with the hydraulic cylinder 410 and the other end communicating with the power oil supply conduit 600, and supplies the control oil to the hydraulic cylinder 410 through the power oil supply conduit 600. A throttle valve 470 is provided in the control oil supply line 430. The control oil return pipe 440 is a capillary pipe 460, one end of the capillary pipe 460 is communicated with the hydraulic cylinder 410, the other end of the capillary pipe 460 is communicated with the ground, a return valve is arranged on the capillary pipe 460 near the ground, and any capillary pipe 460 can be closed through the return valve. The control oil supply conduit 430 slowly takes oil from the power oil supply conduit 600 through the throttle 470 so that the influence on the power oil is minimal, and the influence of the hydraulic fluctuation of the power oil on the control oil is also minimal. By closing all capillary channels 460 on one side from the ground, so that the side cannot return oil, hydraulic oil in hydraulic cylinder 410 gradually accumulates and pushes piston 420 to move, thereby changing the inclination angle of head sub 300. And the other side can judge the inclination angle of the current head short section 300 by observing whether each capillary pipeline 460 has oil return or not on the ground. When the inclination angle of the head pipe nipple 300 reaches a predetermined value, the opening number of the oil return valves on both sides is adjusted according to the state change of the inclination angle, and then the oil return amount on both sides is adjusted, so that the movement of the pistons 420 on both sides is balanced, and the inclination angle of the head pipe nipple 300 is in a dynamic parallel state.
The present invention has been described in detail with reference to the preferred embodiments thereof, and it should be understood that the invention is not limited thereto, but is intended to cover modifications, equivalents, and improvements within the spirit and scope of the present invention.
Claims (10)
1. A directional whipstock for geological drilling, comprising a drill string (100) and a drill bit (200), characterized by further comprising a head sub (300) and a steering control oil system; the head of the drill string (100) is hinged with the tail of the head short section (300), and a hinged position is a hinged shaft (500); the drill bit (200) is mounted at the head of the head short section (300); the steering control oil system comprises two groups of oil systems which are symmetrical to each other, and the symmetrical plane is coincident with the axis of the drill string (100); when the steering control oil system controls the head short section (300) to rotate around the hinge shaft (500) relative to the drill string (100) through hydraulic oil, one group of oil systems drives the head short section (300) to rotate, the oil return amount of the other group of oil systems changes along with the rotation of the head short section (300), and the inclination angle of the head short section (300) is determined by observing the change of oil return.
2. The directional whipstock of claim 1, wherein the steering control oil system comprises a hydraulic cylinder (410), a piston (420), a control oil supply pipe (430), and a control oil return pipe (440), all disposed in the drill string (100), an oil inlet end of the hydraulic cylinder (410) is in communication with the control oil supply pipe (430), and an oil return end is in communication with the control oil return pipe (440); the piston (420) is matched with the hydraulic cylinder (410), one end of the piston is positioned in the hydraulic cylinder (410), and the other end of the piston is connected with the head short section (300); through controlling the inlet and outlet of control oil in the hydraulic cylinder (410), the control oil pushes the piston (420) to stretch, and the piston (420) pushes the head short section (300) to rotate around the hinge shaft (500), so that the drilling direction of the whipstock is changed.
3. The geological drilling directional whipstock of claim 2, wherein one end of the control oil supply conduit (430) and the control oil return conduit (440) is in communication with the hydraulic cylinder (410), and the other end is open to surface equipment; an oil supply valve (450) is arranged above the ground of the control oil supply pipeline (430), and an oil return valve is arranged above the ground of the control oil return pipeline (440); the piston (420) slides in the hydraulic cylinder (410) and can shield the control oil return pipeline (440), and the degree of shielding the control oil return pipeline (440) can be changed by changing the telescopic amount of the piston (420).
4. The directional whipstock for geological drilling according to claim 3, characterized in that a plurality of capillary tubes (460) connected in parallel with each other are connected between the control oil return tube (440) and the hydraulic cylinder (410), and the number of the capillary tubes (460) is different due to different positions of the piston (420).
5. The geological drilling directional whipstock of claim 2, wherein one end of the control oil supply conduit (430) and the control oil return conduit (440) communicate with the hydraulic cylinder (410), and the other end opens to surface equipment; the control oil return pipeline (440) is a capillary pipeline (460); the piston (420) is in different positions, and the number of the blocked capillary channels (460) is different; an oil supply valve (450) is arranged above the ground of the control oil supply pipeline (430), an oil return valve is arranged on the capillary pipeline (460) near the ground, and any capillary pipeline (460) can be closed through the oil return valve.
6. The geological drilling directional whipstock of claim 2, further comprising a power oil supply conduit (600) and a power oil return conduit (610), wherein the power oil supply conduit (600) and the power oil return conduit (610) extend through the drill string (100) and the head sub (300) and are connected to the drill bit (200) to power the drill bit (200); one end of the control oil supply pipeline (430) is communicated with the hydraulic cylinder (410), and the other end of the control oil supply pipeline is communicated with the power oil supply pipeline (600).
7. The geological drilling directional whipstock of claim 6, wherein an oil supply valve (450) is provided on the control oil supply conduit (430).
8. The directional whipstock for geological drilling according to claim 6, wherein a throttle valve (470) is arranged in the control oil supply pipeline (430), the control oil supply pipeline (440) is a capillary pipeline (460), one end of the capillary pipeline (460) is communicated with the hydraulic cylinder (410), the other end of the capillary pipeline is communicated with the ground, the position of the piston (420) is different, and the number of the blocked capillary pipelines (460) is different; an oil return valve is arranged on the capillary pipeline (460) near the ground, and any capillary pipeline (460) can be closed through the oil return valve.
9. The geological drilling directional whipstock of claim 6, wherein the drill bit (200) comprises a hydraulic motor (210) and a mill shoe (220), power oil powers the hydraulic motor (210), and the hydraulic motor (210) drives the mill shoe (220) to rotate.
10. The geological drilling directional whipstock of claim 6, wherein the portion of the power oil supply conduit (600) and the power oil return conduit (610) between the drill string (100) and the head sub (300) is a hose (620).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310069682.0A CN115788302B (en) | 2023-02-07 | 2023-02-07 | Directional whipstock for geological drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310069682.0A CN115788302B (en) | 2023-02-07 | 2023-02-07 | Directional whipstock for geological drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115788302A true CN115788302A (en) | 2023-03-14 |
| CN115788302B CN115788302B (en) | 2023-04-11 |
Family
ID=85430084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310069682.0A Active CN115788302B (en) | 2023-02-07 | 2023-02-07 | Directional whipstock for geological drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115788302B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202325230U (en) * | 2011-11-21 | 2012-07-11 | 林龙海 | Walking-pedrail type rotary drilling machine integrating crane |
| CN104213829A (en) * | 2014-08-27 | 2014-12-17 | 中国石油集团川庆钻探工程有限公司 | Gas drilling underground motor drilling tool |
| CN105909576A (en) * | 2016-05-05 | 2016-08-31 | 上海中联重科桩工机械有限公司 | Pressurized oil cylinder and rear support oil cylinder linkage control system and method as well as rotary drilling rig |
| CN108952575A (en) * | 2018-07-24 | 2018-12-07 | 徐芝香 | Torticollis static state directional type rotary steerable tool |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109989706A (en) * | 2019-04-25 | 2019-07-09 | 山东瑞诺液压机械有限公司 | A kind of petroleum machinery drive system using hydraulic motor |
| CN110485924A (en) * | 2019-09-10 | 2019-11-22 | 中石化石油工程技术服务有限公司 | Coiled tubing drilling power drill head controlling device and its application method |
| CN112832681A (en) * | 2020-10-19 | 2021-05-25 | 万晓跃 | Controllable-track lateral drilling tool and method |
| CN115234237A (en) * | 2022-07-15 | 2022-10-25 | 太原理工大学 | Device for fracturing hard rock mass by underground electric pulse based on liquid-electricity effect |
-
2023
- 2023-02-07 CN CN202310069682.0A patent/CN115788302B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202325230U (en) * | 2011-11-21 | 2012-07-11 | 林龙海 | Walking-pedrail type rotary drilling machine integrating crane |
| CN104213829A (en) * | 2014-08-27 | 2014-12-17 | 中国石油集团川庆钻探工程有限公司 | Gas drilling underground motor drilling tool |
| CN105909576A (en) * | 2016-05-05 | 2016-08-31 | 上海中联重科桩工机械有限公司 | Pressurized oil cylinder and rear support oil cylinder linkage control system and method as well as rotary drilling rig |
| CN108952575A (en) * | 2018-07-24 | 2018-12-07 | 徐芝香 | Torticollis static state directional type rotary steerable tool |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109989706A (en) * | 2019-04-25 | 2019-07-09 | 山东瑞诺液压机械有限公司 | A kind of petroleum machinery drive system using hydraulic motor |
| CN110485924A (en) * | 2019-09-10 | 2019-11-22 | 中石化石油工程技术服务有限公司 | Coiled tubing drilling power drill head controlling device and its application method |
| CN112832681A (en) * | 2020-10-19 | 2021-05-25 | 万晓跃 | Controllable-track lateral drilling tool and method |
| CN115234237A (en) * | 2022-07-15 | 2022-10-25 | 太原理工大学 | Device for fracturing hard rock mass by underground electric pulse based on liquid-electricity effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115788302B (en) | 2023-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4077671A (en) | Subterranean drilling and slurry mining method | |
| US4858705A (en) | Assembly for making oriented bore-holes | |
| US4834193A (en) | Earth boring apparatus and method with control valve | |
| CN101660391B (en) | Radial horizontal drilling device | |
| CN103703209B (en) | Comprise the brill soil working tool of regracting pad, comprise cylinder for the regracting pad of this instrument and correlation technique | |
| CA1261817A (en) | Earth drilling method and apparatus using multiple hydraulic forces | |
| CN105113987A (en) | Soft-hard interbedding coal seam bedding measurement while drilling (MWD) orientation drilling equipment and construction method thereof | |
| CN107740677A (en) | A kind of broken soft seam concordant directional long borehole gas pumping method for crossing working face | |
| CA2258236A1 (en) | A system for directional control of drilling | |
| US4461359A (en) | Rotary drill indexing system | |
| NO834330L (en) | DRILLING DEVICE FOR USE IN DRILL | |
| US4134619A (en) | Subterranean mining | |
| US20150275583A1 (en) | Drill rig and methods for directional drilling | |
| EP3717730B1 (en) | Simple rotary steerable drilling system | |
| US7234538B2 (en) | Method for sinking a borehole in the ground and wet boring tool | |
| CN111677450B (en) | Device and method for drilling branch hole of underground directional drilling of coal mine | |
| CN115788302B (en) | Directional whipstock for geological drilling | |
| US6135215A (en) | Tool string apparatus for lateral borehole formation | |
| CN205503007U (en) | Drilling system based on double -walled drilling rod | |
| CN114658379B (en) | Directional core drill and use method thereof | |
| CN205503037U (en) | Double -walled drilling rod drilling system's water conservancy diversion pressurizing piston | |
| CN214943996U (en) | Drill bit type intelligent guiding drilling device | |
| CN115584959A (en) | Rotary drilling machine drilling track control method and drilling equipment | |
| CN215256027U (en) | Full-rotation guiding tool | |
| RU2719875C1 (en) | Assembly of drill string bottom for drilling of offshoots from horizontal part of uncased well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |