CN103422814A - Three-dimensional waterpower vibrator for petroleum drilling - Google Patents
Three-dimensional waterpower vibrator for petroleum drilling Download PDFInfo
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- CN103422814A CN103422814A CN2012101491177A CN201210149117A CN103422814A CN 103422814 A CN103422814 A CN 103422814A CN 2012101491177 A CN2012101491177 A CN 2012101491177A CN 201210149117 A CN201210149117 A CN 201210149117A CN 103422814 A CN103422814 A CN 103422814A
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Abstract
The invention relates to a three-dimensional waterpower vibrator for petroleum drilling, and belongs to the technical field of design of petroleum drilling tools. The three-dimensional waterpower vibrator is composed of a flow control valve, an axial vibrator, a filtering connector, a screw motor power connector and a hydraulic impulse generator. The three-dimensional waterpower vibrator is characterized in that the flow control valve is used for adjusting flow and speed of slurry flowing into the vibrator, the axial vibrator is used for generating displacement upwards along the axial direction, the filtering connector is used for filtering thick slurry components, certain differential pressure is formed in the screw motor power connector by the slurry entering the vibrator to push a rotor structure in a screw motor to rotate and eccentrically vibrate, and the hydraulic impulse generator generates vibration in the circumferential direction through changes of open area circulation between a stationary ring and a moving ring of a PDC thrust bearing. Through three-dimensional vibration simultaneously generated in the axial direction and in the circumferential direction, large well displacement and frictional resistance between a drill column and a well wall of a horizontal well can be effectively overcome, torque between the drill column and the well wall is reduced, jamming of a drilling tool is avoided, and the three-dimensional waterpower vibrator has the advantages that drilling efficiency is remarkably improved and drilling cost is reduced.
Description
Technical field:
The present invention relates to a kind of oil drilling three-dimensional hydraulic vibrator, belong to the oil drilling tool design field.
Background technology:
In the process of oil drilling, particularly, in the drilling process of extended reach well and horizontal well, the frictional resistance of tubing string is to need the key problem solved, and it directly determines and affect the maximum extension of extended reach well and horizontal well.
Generally, the displacement of extended reach well and horizontal well is greater than or equal to 2 with the ratio of vertical depth, and the lower limit of its hole angle must surpass 63 °, and, because general extended reach well has a vertical section, its maximum hole angle is generally more than 70 °; Extended reach well tiltedly deeply reach several kms, for horizontal well, well track is approximate to be up to the standard, well continues to extend six times of core intersection usually in oil reservoir.Under these circumstances, the deadweight overwhelming majority of extended reach well and drillstring in horizontal section will press to the borehole wall, between drill string and the borehole wall, will produce very large frictional force, thereby it is difficult to cause drill string to slide, drill string is born than high pulling torque, make rate of penetration slow, lock of tool drilling also likely occurs.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of oil drilling three-dimensional hydraulic vibrator, can effectively overcome the moment of torsion between frictional resistance, reduction drill string and the borehole wall between extended reach well and drillstring in horizontal section and the borehole wall, avoid the generation of lock of tool drilling, there is the drilling efficiency of increasing substantially, reduce the characteristics of drilling cost.
The present invention realizes above-mentioned purpose by following technical solution.
In structure at oil drilling with the three-dimensional hydraulic vibrator, be provided with flow control valve, axial vibration device, transition joint, screw motor power sub, fluid power impulse generator; Described flow control valve is comprised of valve body, spool, spring, valve seat; Spool, spring, valve seat are arranged in valve body; Spool is arranged on the top of spring, and the lower end of spring is arranged on valve seat, and valve seat is fixedly mounted on the inwall of valve body; Spool can move axially in valve body; The upper end of valve body is connected by screw thread with drill string; The lower end of valve body is connected by screw thread with the upper end of axle; Position with respect to spool and valve seat junction on valve body has the bypass valve opening; Described axial vibration device is comprised of axle, top connection, butterfly spring, hollow piston, lower contact; The upper end of axle is connected by screw thread with the lower end of valve body; The upper end of top connection is connected by spline with axle; The lower end of top connection is connected by screw thread with the upper end of lower contact; The lower end of lower contact is connected by screw thread with the upper end of transition joint shell; The lower end of axle is arranged in the cavity of top connection and lower contact, and in the cavity of lower contact, hollow piston is threaded connection the lower end that is arranged on axle; Butterfly spring is arranged in the cavity between axle and lower contact, is arranged between the shoulder of the flange of axle and lower contact; Described transition joint is comprised of sieves, anti-lost connecting rod, transition joint shell; The upper end of transition joint shell is connected by screw thread with the lower end of lower contact; The lower end of transition joint shell is connected by screw thread with the upper end of screw motor shell; Sieves, anti-lost connecting rod are arranged in the transition joint shell; Sieves is arranged on the top of anti-lost connecting rod; Have circular hole and be used for increasing the flow that mud flows on the upper surface of anti-lost connecting rod; Having filter bores on sieves can filter out solid particle larger in mud; Described screw motor power sub is comprised of screw motor shell, elastomer stator, rotor; The upper end of screw motor shell is connected by screw thread with the lower end of transition joint shell; The lower end of screw motor shell is connected by screw thread with the upper end of generator shell; Elastomer stator, rotor are arranged in the screw motor shell; Elastomer stator is fixedly mounted on the inwall of screw motor shell; Rotor is arranged in elastomer stator; The upper end of rotor is connected by screw thread with the lower end of anti-lost connecting rod; Described fluid power consists generator shell, connector, PDC bearing rotating ring, PDC bearing stationary ring, anchor tip form; The upper end of generator shell is connected by screw thread with the lower end of screw motor shell; Connector, PDC bearing rotating ring, PDC bearing stationary ring, anchor tip are arranged in generator shell; The upper end of connector is connected by screw thread with the lower end of rotor; The lower end of connector is connected by screw thread with PDC bearing rotating ring; The upper end of anchor tip is connected by screw thread with PDC bearing stationary ring; The lower end of anchor tip is connected by screw thread with generator shell; Garden periphery at PDC bearing stationary ring has flowing hole; When rotor and eccentric vibrating, it moves through connector and is directly delivered on PDC bearing rotating ring, thereby the mud area of passage of the flowing hole on the PDC bearing stationary ring that makes to flow through produces the variation of circulation, thereby produces the vibration on circumferencial direction.
The present invention compared with prior art, can control flow and the speed of mud flexibly, filters out solid particle larger in mud, produces the displacement of in axial direction going up by the axial vibration device; Produce the eccentric vibrating power of circumferencial direction by the screw motor power sub, make the variation of the area of passage of fluid power impulse generator produce the pulsation that drill string is along the circumferential direction gone up, thereby effectively overcome the moment of torsion between frictional resistance, reduction drill string and the borehole wall between extended reach well and drillstring in horizontal section and the borehole wall, avoid the generation of lock of tool drilling, there is the drilling efficiency of increasing substantially, reduce the characteristics of drilling cost.
The accompanying drawing explanation:
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is the structural representation that connector part of the present invention has flow channels.
In the drawings: 1. valve body, 2. spool, 3. spring, 4. valve seat, 5. axle, 6. top connection, 7. butterfly spring, 8. hollow piston, 9. lower contact, 10. sieves, 11. anti-lost connecting rods, 12. transition joint shells, 13. screw motor shells, 14. elastomer stators, 15. rotors, 16. connectors, 17. generator shells, 18.PDC bearing rotating ring, 19.PDC bearing stationary ring, 20. anchor tips, 21. bypass valve openings.
The specific embodiment:
Oil drilling of the present invention is comprised of flow control valve, axial vibration device, transition joint, screw motor power sub, fluid power impulse generator with the three-dimensional hydraulic vibrator; Described flow control valve is comprised of valve body 1, spool 2, spring 3, valve seat 4; Spool 2, spring 3, valve seat 4 are arranged in valve body 1; Spool 2 is arranged on the top of spring 3, and the lower end of spring 3 is arranged on valve seat 4, and valve seat 4 is fixedly mounted on the inwall of valve body 1; Under the effect of the mud flowed into and spring force, spool 2 can move axially in valve body 1; Be used for regulating the inflow velocity of mud and flow into total amount; The upper end of valve body 1 is connected by screw thread with drill string; The lower end of valve body 1 is connected by screw thread with the upper end of axle 5; Have bypass valve opening 21 with respect to spool 2 and the position of valve seat 4 junctions on valve body 1; When mud flow rate and pressure reach typical set value, spool 2 moves down, and flow control valve is closed, and bypass valve opening 21 is closed, and mud now is all by valve body 1 valve seat 4 of flowing through downwards; When the slurry flows value is too small or during termination of pumping, the insufficient pressure produced is during with the elastic force that overcomes spring 3 and stiction, spring 3 is spool 2 jack-up upwards, flow control valve is opened, be that bypass valve opening 21 is in enable possition, part mud now can enter bypass valve opening 21 from the annular space between valve body 1 and the borehole wall, the valve seat 4 of then flowing through downwards; Another part mud is from the valve seat 4 of axially normally flowing through downwards of valve body 1; Described axial vibration device is comprised of axle 5, top connection 6, butterfly spring 7, hollow piston 8, lower contact 9; The upper end of axle 5 is connected by screw thread with the lower end of valve body 1; The upper end of top connection 6 is connected by spline with axle 5; The lower end of top connection 6 is connected by screw thread with the upper end of lower contact 9; The lower end of lower contact 9 is connected by screw thread with the upper end of transition joint shell 12; The lower end of axle 5 is arranged in the cavity of top connection 6 and lower contact 9, and axle 5 can be slided in cavity; The drilling liquid pressure of axial vibration device inside and the positive pressure difference between outer shroud make axle 5 can move up and down in cavity; In the cavity of lower contact 9, hollow piston 8 is threaded connection the lower end that is arranged on axle 5; Butterfly spring 7 is arranged in the cavity between axle 5 and lower contact 9, is arranged between the shoulder of the flange of axle 5 and lower contact 9; Between the nipple end and hollow piston 8 of top connection 6, butterfly spring 7 is axially producing the spring resistance, and periodically compressed or elongation; Flow and constantly variation and butterfly spring 7 effects of speed due to the mud that flows into vibrator from flow control valve, make axle 5 move up and down in cavity, thereby the axial vibration device produces the displacement of in axial direction going up; Described transition joint is comprised of sieves 10, anti-lost connecting rod 11, transition joint shell 12; The upper end of transition joint shell 12 is connected by screw thread with the lower end of lower contact 9; The lower end of transition joint shell 12 is connected by screw thread with the upper end of screw motor shell 13; Sieves 10, anti-lost connecting rod 11 are arranged in transition joint shell 12; Sieves 10 is arranged on the top of anti-lost connecting rod 11; Have circular hole and be used for increasing the flow that mud flows on the upper surface of anti-lost connecting rod 11; Having filter bores on sieves 10 can filter out solid particle larger in mud; Described screw motor power sub is comprised of screw motor shell 13, elastomer stator 14, rotor 15; The upper end of screw motor shell 13 is connected by screw thread with the lower end of transition joint shell 12; The lower end of screw motor shell 13 is connected by screw thread with the upper end of generator shell 17; Elastomer stator 14, rotor 15 are arranged in screw motor shell 13; Elastomer stator 14 is fixedly mounted on the inwall of screw motor shell 13; Rotor 15 is arranged in elastomer stator 14; The upper end of rotor 15 is connected by screw thread with the lower end of anti-lost connecting rod 11; Can effectively stop rotor 15 slippage in the axial direction; The external surface of the inner surface of elastomer stator 14, rotor 15 has special helix structure; Rotor 15 adopts the single head structure, and forms the annular seal space structure between rotor 15 and elastomer stator 14; Slurry flows is fashionable, and the annular seal space structure in axial direction has certain barometric gradient, pressure drive rotor 15 rotations of gradient, and form a kind of eccentric vibrating; Rotor 15 is in the interior eccentric rotary of doing of elastomer stator 14; Described fluid power consists generator shell 17, connector 16, PDC bearing rotating ring 18, PDC bearing stationary ring 19, anchor tip 20 form; The upper end of generator shell 17 is connected by screw thread with the lower end of screw motor shell 13; The lower end of generator shell 17 is connected by screw thread with following drill string; Connector 16, PDC bearing rotating ring 18, PDC bearing stationary ring 19, anchor tip 20 are arranged in generator shell 17; The upper end of connector 16 is connected by screw thread with the lower end of rotor 15; The lower end of connector 16 is connected by screw thread with PDC bearing rotating ring 18; The upper end of anchor tip 20 is connected by screw thread with PDC bearing stationary ring 19; The lower end of anchor tip 20 is connected by screw thread with generator shell 17; In PDC bearing stationary ring 19De garden, periphery has flowing hole; When rotor 15 rotation and eccentric vibrating, it moves through connector 16 and is directly delivered on PDC bearing rotating ring 18, thereby the mud area of passage of the flowing hole on the PDC bearing stationary ring 19 that makes to flow through produces the variation of circulation, thus the vibration on the generation circumferencial direction.
Have flow channels on connector 16, corresponding thereto, at PDC bearing rotating ring 18 and PDC bearing stationary ring 19De center, also have flowing hole; When rotor 15 rotations and eccentric vibrating, it moves through connector 16 and is directly delivered on PDC bearing rotating ring 18, in the flowing hole of the flow channels of mud now from connector 16, PDC bearing rotating ring 18 centers and the flowing hole of PDC bearing stationary ring 19 centers, passes through; Make the mud area of passage of the flowing hole on the PDC bearing stationary ring 19 of flowing through produce the variation circulated.
Oil drilling of the present invention is comprised of flow control valve, axial vibration device, transition joint, screw motor power sub, fluid power impulse generator with the three-dimensional hydraulic vibrator; Flow control valve is used for regulating flow and the speed of the mud that flows into vibrator; The axial vibration device is used for producing the displacement of in axial direction going up; Transition joint is used for filtering thicker mud composition; The mud that enters vibrator forms certain pressure reduction in screw motor power sub the inside, the rotor structure rotation of lead-screw motor the inside, rotor eccentric vibrating in elastomer stator simultaneously; The fluid power impulse generator is by the variation of the circulation of the area of passage between PDC thrust bearing stationary ring and rotating ring, thus the vibration on the generation circumferencial direction.
Drill string drill string in decentralization process that the three-dimensional vibrating that oil drilling of the present invention produces with the three-dimensional hydraulic vibrator on axial, circumferencial direction simultaneously can improve extended reach well and horizontal well overcomes the ability of the borehole wall to the resistance of drill string; The drill string that minimizing causes more greatly due to the difference of drill string pressure and bottom pressure, to the generation of the down-hole accidents such as borehole wall backup and bit freezing, reduces the moment of torsion of the suffered formation function of drill string.
Claims (5)
1. oil drilling three-dimensional hydraulic vibrator, be comprised of flow control valve, axial vibration device, transition joint, screw motor power sub, fluid power impulse generator; It is characterized in that described flow control valve is comprised of valve body (1), spool (2), spring (3), valve seat (4); Spool (2), spring (3), valve seat (4) are arranged in valve body (1); Spool (2) is arranged on the top of spring (3), and it is upper that the lower end of spring (3) is arranged on valve seat (4), and valve seat (4) is fixedly mounted on the inwall of valve body (1); Spool (2) can move axially in valve body (1); The upper end of valve body (1) is connected by screw thread with drill string; The lower end of valve body (1) is connected by screw thread with the upper end of axle (5); Described axial vibration device is comprised of axle (5), top connection (6), butterfly spring (7), hollow piston (8), lower contact (9); The upper end of axle (5) is connected by screw thread with the lower end of valve body (1); The upper end of top connection (6) is connected by spline with axle (5); The lower end of top connection (6) is connected by screw thread with the upper end of lower contact (9); The lower end of lower contact (9) is connected by screw thread with the upper end of transition joint shell (12); The lower end of axle (5) is arranged in the cavity of top connection (6) and lower contact (9), and in the cavity of lower contact (9), hollow piston (8) is threaded connection the lower end that is arranged on axle (5); Described transition joint is comprised of sieves (10), anti-lost connecting rod (11), transition joint shell (12); The upper end of transition joint shell (12) is connected by screw thread with the lower end of lower contact (9); The lower end of transition joint shell (12) is connected by screw thread with the upper end of screw motor shell (13); Sieves (10), anti-lost connecting rod (11) are arranged in transition joint shell (12); Sieves (10) is arranged on the top of anti-lost connecting rod (11); Described screw motor power sub is comprised of screw motor shell (13), elastomer stator (14), rotor (15); The upper end of screw motor shell (13) is connected by screw thread with the lower end of transition joint shell (12); The lower end of screw motor shell (13) is connected by screw thread with the upper end of generator shell (17); Elastomer stator (14), rotor (15) are arranged in screw motor shell (13); Elastomer stator (14) is fixedly mounted on the inwall of screw motor shell (13); Rotor (15) is arranged in elastomer stator (14); The upper end of rotor (15) is connected by screw thread with the lower end of anti-lost connecting rod (11); Described fluid power consists generator shell (17), connector (16), PDC bearing rotating ring (18), PDC bearing stationary ring (19), anchor tip (20) form; The upper end of generator shell (17) is connected by screw thread with the lower end of screw motor shell (13); Connector (16), PDC bearing rotating ring (18), PDC bearing stationary ring (19), anchor tip (20) are arranged in generator shell (17); The upper end of connector (16) is connected by screw thread with the lower end of rotor (15); The lower end of connector (16) is connected by screw thread with PDC bearing rotating ring (18); The upper end of anchor tip (20) is connected by screw thread with PDC bearing stationary ring (19); The lower end of anchor tip (20) is connected by screw thread with generator shell (17); Garden periphery at PDC bearing stationary ring (19) has flowing hole.
2. oil drilling according to claim 1 three-dimensional hydraulic vibrator, is characterized in that having bypass valve opening (21) in the upper position with respect to spool (2) and valve seat (4) junction of valve body (1).
3. oil drilling according to claim 2 three-dimensional hydraulic vibrator, is characterized in that butterfly spring (7) is arranged in the cavity between axle (5) and lower contact (9), is arranged between the shoulder of the flange of axle (5) and lower contact (9).
4. oil drilling according to claim 3 three-dimensional hydraulic vibrator, is characterized in that having circular hole on the upper surface of anti-lost connecting rod (11) and be used for increasing the flow that mud flows into; Having filter bores on sieves (10) can filter out solid particle larger in mud.
5. oil drilling according to claim 4 three-dimensional hydraulic vibrator, is characterized in that having flow channels on connector (16), corresponding thereto, at the center of PDC bearing rotating ring (18) and PDC bearing stationary ring (19), also has flowing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210149117.7A CN103422814B (en) | 2012-05-15 | 2012-05-15 | Oil drilling three-dimensional waterpower vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210149117.7A CN103422814B (en) | 2012-05-15 | 2012-05-15 | Oil drilling three-dimensional waterpower vibrator |
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| Publication Number | Publication Date |
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| CN103422814A true CN103422814A (en) | 2013-12-04 |
| CN103422814B CN103422814B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210149117.7A Expired - Fee Related CN103422814B (en) | 2012-05-15 | 2012-05-15 | Oil drilling three-dimensional waterpower vibrator |
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| CN103696693A (en) * | 2013-12-18 | 2014-04-02 | 山东陆海石油装备有限公司 | Hydraulic oscillator for well drilling |
| CN103742076A (en) * | 2014-01-02 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Axial vibrator |
| CN104314465A (en) * | 2014-10-16 | 2015-01-28 | 中国石油大学(华东) | Method for reducing frictional resistance between drill column and well wall and partitioning joint |
| CN105332655A (en) * | 2015-11-26 | 2016-02-17 | 长江大学 | Three-dimensional hydroscillator |
| CN105888552A (en) * | 2014-11-25 | 2016-08-24 | 盐城市华谊石油机械有限公司 | Hydraulic vibration type screw drill |
| CN106677700A (en) * | 2017-03-06 | 2017-05-17 | 中国石油集团钻井工程技术研究院 | Turbine type bi-directional vibration anti-drag tool for coiled tubing drilling |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| WO2020014009A1 (en) * | 2018-07-10 | 2020-01-16 | Harvey Peter R | Drilling motor having sensors for performance monitoring |
| CN111765207A (en) * | 2020-06-12 | 2020-10-13 | 中石化石油机械股份有限公司 | Low-friction spline transmission structure and hydraulic oscillator adopting same |
| WO2021057116A1 (en) * | 2019-09-25 | 2021-04-01 | 四川宏华石油设备有限公司 | Resistance reduction device |
| CN112696163A (en) * | 2021-01-26 | 2021-04-23 | 中国石油大学(北京) | Well descending friction-reducing hydraulic vibrator |
| CN113073938A (en) * | 2021-03-19 | 2021-07-06 | 四川宏华石油设备有限公司 | Rotary guide tool |
| CN113767208A (en) * | 2019-05-02 | 2021-12-07 | 瑞沃井下工具有限公司 | Wear resistant vibratory assembly and method |
| CN114458228A (en) * | 2021-09-13 | 2022-05-10 | 中海油能源发展股份有限公司 | Abandoned well shaft casing vibration plugging tool and plugging method thereof |
| CN114458229A (en) * | 2021-09-13 | 2022-05-10 | 中海油能源发展股份有限公司 | Vibration plugging tool for oil pipe of abandoned well shaft and plugging method thereof |
| CN117868686A (en) * | 2024-01-16 | 2024-04-12 | 中电建建筑集团有限公司 | Deviation correcting method of directional drill and filtering structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103742076B (en) * | 2014-01-02 | 2017-01-04 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | axial vibrator |
| CN104314465A (en) * | 2014-10-16 | 2015-01-28 | 中国石油大学(华东) | Method for reducing frictional resistance between drill column and well wall and partitioning joint |
| CN105888552A (en) * | 2014-11-25 | 2016-08-24 | 盐城市华谊石油机械有限公司 | Hydraulic vibration type screw drill |
| CN105888552B (en) * | 2014-11-25 | 2018-11-20 | 盐城市华谊石油机械有限公司 | A kind of hydraulic vibration formula helicoid hydraulic motor |
| CN105332655A (en) * | 2015-11-26 | 2016-02-17 | 长江大学 | Three-dimensional hydroscillator |
| CN105332655B (en) * | 2015-11-26 | 2017-06-16 | 长江大学 | A kind of three-dimensional hydraulic oscillator |
| CN106677700A (en) * | 2017-03-06 | 2017-05-17 | 中国石油集团钻井工程技术研究院 | Turbine type bi-directional vibration anti-drag tool for coiled tubing drilling |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| US10920508B2 (en) | 2018-07-10 | 2021-02-16 | Peter R. Harvey | Drilling motor having sensors for performance monitoring |
| WO2020014009A1 (en) * | 2018-07-10 | 2020-01-16 | Harvey Peter R | Drilling motor having sensors for performance monitoring |
| CN113767208A (en) * | 2019-05-02 | 2021-12-07 | 瑞沃井下工具有限公司 | Wear resistant vibratory assembly and method |
| CN113767208B (en) * | 2019-05-02 | 2024-03-22 | 瑞沃井下工具有限公司 | Wear resistant vibration assembly and method |
| WO2021057116A1 (en) * | 2019-09-25 | 2021-04-01 | 四川宏华石油设备有限公司 | Resistance reduction device |
| CN111765207A (en) * | 2020-06-12 | 2020-10-13 | 中石化石油机械股份有限公司 | Low-friction spline transmission structure and hydraulic oscillator adopting same |
| CN112696163A (en) * | 2021-01-26 | 2021-04-23 | 中国石油大学(北京) | Well descending friction-reducing hydraulic vibrator |
| CN113073938B (en) * | 2021-03-19 | 2022-01-11 | 四川宏华石油设备有限公司 | Rotary guide tool |
| CN113073938A (en) * | 2021-03-19 | 2021-07-06 | 四川宏华石油设备有限公司 | Rotary guide tool |
| CN114458228A (en) * | 2021-09-13 | 2022-05-10 | 中海油能源发展股份有限公司 | Abandoned well shaft casing vibration plugging tool and plugging method thereof |
| CN114458229A (en) * | 2021-09-13 | 2022-05-10 | 中海油能源发展股份有限公司 | Vibration plugging tool for oil pipe of abandoned well shaft and plugging method thereof |
| CN114458228B (en) * | 2021-09-13 | 2024-05-14 | 中海油能源发展股份有限公司 | Vibration plugging tool and plugging method for well casing of abandoned well |
| CN114458229B (en) * | 2021-09-13 | 2024-05-14 | 中海油能源发展股份有限公司 | Vibration plugging tool for well shaft oil pipe of disposal well and plugging method thereof |
| CN117868686A (en) * | 2024-01-16 | 2024-04-12 | 中电建建筑集团有限公司 | Deviation correcting method of directional drill and filtering structure thereof |
| CN117868686B (en) * | 2024-01-16 | 2024-06-14 | 中电建建筑集团有限公司 | Deviation correcting method of directional drill and filtering structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103422814B (en) | 2015-10-21 |
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