CN106567681A - Anti-seizing tool capable of avoiding drill clamping and reducing sticky slipping - Google Patents
Anti-seizing tool capable of avoiding drill clamping and reducing sticky slipping Download PDFInfo
- Publication number
- CN106567681A CN106567681A CN201610332889.2A CN201610332889A CN106567681A CN 106567681 A CN106567681 A CN 106567681A CN 201610332889 A CN201610332889 A CN 201610332889A CN 106567681 A CN106567681 A CN 106567681A
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- CN
- China
- Prior art keywords
- mandrel
- compression spring
- seal ring
- guide rod
- adaptor
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
Abstract
The invention discloses an anti-seizing tool capable of avoiding drill clamping and reducing sticky slipping to solve the problem that the rock breaking efficiency is low due to clamping and slipping in the drilling process. According to the main technical scheme, an upper connector, an upper shell, an adapter and a lower shell are sequentially connected through a thread; a compression spring is mounted on a compression spring guide rod, the low end of the compression spring guide rod pushes an anti-falling connector to enable a mandrel to stretch, and the anti-falling connector is connected with a mandrel thread and axially positioned through an adapter shaft shoulder; a steel wire rope system is arranged in a left-rotation mode, the upper and lower ends of the steel wire rope system are separately fixed to the lower end of the adapter and fixed into a circular groove in the upper end of a mandrel boss, the upper and lower ends of steel wire ropes are mounted by 30-40 degrees in an inclined mode, and the steel wire ropes are in a tensional state initially; during work, drilling pressure is transferred to the mandrel through the compression spring, and torque is transferred to the mandrel through the steel wire rope system; and when the mandrel rotates backwards, the steel wire rope system retracts to enable the mandrel to compress the compression spring to axially retract so as to decrease the cutting depth of a drill bit, and the drill bit is in a rock mass in the whole process.
Description
Technical field
The present invention relates to what is be used in oil, natural gas ultradeep well and extended reach well drilling field avoids the anti-viscous motion instrument of bit freezing and reduction stick-slip.
Background technology
Recent years, with the continuous development of China's industry, oil, the demand of natural gas and yield are also increasing.However, this situation causes the exhaustion of a large amount of Shallow Oil-Gas resources.In order to alleviate the shortage problem of China's oil resource, people start to carry out oil exploitation to the severe field of the environmental conditions such as deep-well, ultradeep well.But shown according to exploitation field condition：During probing ultradeep well, extended reach well, horizontal well, PDC drill bit is in drilling process, especially run into soft or hard interlock stratum when, easily there is the sliding phenomenon of card, drill bit and frequently suppressing for drilling tool is caused to jump and torsional oscillation, cause drill bit to collapse the damage of tooth, damage, DHA, reduce drill bit rate of penetration and efficiency of breaking rock, drilling cost increases.In order to tackle this phenomenon, most of scene solves bit freezing, bit bouncing phenomenon by the way of pulling out of hole at present, as with the increase of the number of times that makes a trip, drilling efficiency will be substantially reduced.
Based on this, there is bit freezing, stick-slip and phenomenon of torsional vibration to prevent drill bit, reduce the number of times that makes a trip, improve drilling efficiency, set forth herein avoiding bit freezing and reducing the anti-viscous motion instrument of stick-slip.
The content of the invention
The purpose of the present invention is：Jump, phenomenon of torsional vibration are suppressed frequently in order to solve the bit freezing, stick-slip, drill bit and the drilling tool that occur during ultradeep well and extended reach well is bored, improve efficiency of breaking rock, the number of times that reduction makes a trip, extend bit life, it is special that the anti-viscous motion instrument for avoiding bit freezing and reducing stick-slip is provided.
In order to achieve the above object, the technical solution used in the present invention is：Avoid bit freezing and reduce the anti-viscous motion instrument of stick-slip, be mainly made up of top connection, upper shell, adaptor, lower house, dynamic seal ring a, dynamic seal ring b, dynamic seal ring c, compression spring, compression spring guide rod, floating seal ring, anti-lost joint, mandrel, O-ring seal, steel wire rope, mandrel joint；Characterized in that, screw thread is passed sequentially through between top connection, upper shell, adaptor, lower house being connected the shell of composition instrument, adaptor has O-ring seal with lower house threaded connection place；In instrument inner chamber, compression spring is arranged on compression spring guide rod, carries out axially position by top connection lower end and the compression spring guide rod shaft shoulder；Dynamic seal ring a is installed between compression spring guide rod upper end outer wall and top connection lower end inside, dynamic seal ring a is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；Floating seal ring is made up of floating piston and two lip envelopes, and is arranged between upper enclosure inner wall and compression spring guide rod outer wall, and floating seal ring carries out axial limiting by the compression spring guide rod shaft shoulder and the anti-lost joint shaft shoulder；Dynamic seal ring b is installed between upper enclosure inner wall and anti-lost joint outer wall, dynamic seal ring b is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；Anti-lost joint upper and lower side is connected by screw thread with compression spring guide rod and mandrel respectively, and carries out axially position by the adaptor shaft shoulder；Circular groove is uniformly provided with circumferentially in adaptor lower end wall, in steel rope system, each steel wire rope upper end is respectively and fixedly installed in equally distributed each circular groove, is integrally formed with adaptor；Mandrel lower end boss outer wall is coordinated with lower house inwall gap, the circular groove corresponding with adaptor lower end circumference circular groove is uniformly provided with circumferentially in boss upper end, in steel rope system, each steel wire rope lower end is respectively and fixedly installed in the circumferentially uniform circular groove in mandrel boss upper end, it is integrally formed with mandrel, and ensure that steel rope system top and bottom keep 30～40 degree of angle of inclination to install, certain relative distance is kept between adaptor lower end and mandrel boss upper end simultaneously, state of the steel rope system in stretching is made；Mandrel boss lower end carries out axial limiting by lower house lower end inner wall boss, dynamic seal ring group c is installed between mandrel lower end outer wall and lower house lower end inner wall, dynamic seal ring c is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；Mandrel lower end is connected with mandrel joint screw thread.
The invention has the beneficial effects as follows：(1) instrument promotes mandrel to extend to its total length by upper unit compression spring, the stretching, extension and contraction of lower device steel rope system control instrument, when shaft bottom drill bit reaction torque exceedes arranges moment of torsion, compression spring and steel rope system automatically can shrink, in contraction process, drill string shortens, drill bit is gradually subsequently lifted shaft bottom to returning to full-speed state, when the reduction of the moment of torsion on drilling tool is acted on, compression spring releases energy and stretch drilling tool by steel rope system, and drill bit is stably crept in remaining at rock stratum；(2) the circumferential distortional energy of the axial shrinkage and steel rope system of compression spring mitigates drill string axial vibration and twisting vibration, extends drilling tool and bit life；(3) the automatic contraction of instrument and stretching, extension is effectively prevented from the appearance of drill bit bit freezing phenomenon, reduces drilling tool stick-slip, reduces the number of times for making a trip, shortens drilling time, improves drilling efficiency.
Description of the drawings
Fig. 1 is the structural representation that the present invention avoids bit freezing and the anti-viscous motion instrument stretching, extension work for reducing stick-slip.
In figure：1. top connection, 2. dynamic seal ring a, 3. upper shell, 4. compression spring, 5. compression spring guide rod, 6. floating piston, 7. lip envelope, 8. lip envelope, 9. dynamic seal ring b, 10. anti-lost joint, 11. mandrels, 12. adaptors, 13.O type sealing rings, 14. lower houses, 15. steel wire ropes, 16. dynamic seal ring c, 17. mandrel joints.
Fig. 2 is the sectional view in A-A faces in Fig. 1 of the present invention.
In figure：11. mandrels, 12. adaptors, 14. lower houses, 18. circular grooves.
Fig. 3 is the sectional view in B-B faces in Fig. 1 of the present invention.
In figure：11. mandrels, 14. lower houses, 19. circular grooves.
Fig. 4 is the sectional view of Fig. 1 steel rope systems of the present invention.
In figure：11. mandrels, 12. adaptors, 15. steel wire ropes, 18. circular grooves, 19. circular grooves.
Fig. 5 is the front view of Fig. 1 steel rope systems of the present invention.
In figure：11. mandrels, 12. adaptors, 15. steel wire ropes.
Fig. 6 is the structural representation that the present invention avoids bit freezing and the anti-viscous motion instrument contraction work for reducing stick-slip.
In figure：1. top connection, 2. dynamic seal ring a, 3. upper shell, 4. compression spring, 5. compression spring guide rod, 6. floating piston, 7. lip envelope, 8. lip envelope, 9. dynamic seal ring b, 10. anti-lost joint, 11. mandrels, 12. adaptors, 13.O type sealing rings, 14. lower houses, 15. steel wire ropes, 16. dynamic seal ring c, 17. mandrel joints.
Specific embodiment
It is shown with reference to the accompanying drawings, avoid bit freezing and reduce the anti-viscous motion instrument of stick-slip, be mainly made up of top connection 1, upper shell 3, adaptor 12, lower house 14, dynamic seal ring a2, dynamic seal ring b9, dynamic seal ring c16, compression spring 4, compression spring guide rod 5, floating seal ring 6-8, anti-lost joint 10, mandrel 11, O-ring seal 13, steel wire rope 15, mandrel joint 17；Characterized in that, screw thread is passed sequentially through between top connection 1, upper shell 3, adaptor 12, lower house 14 being connected the shell of composition instrument, adaptor 12 has O-ring seal 13 with 3 threaded connection place of lower house；In instrument inner chamber, compression spring 4 is arranged on compression spring guide rod 5, carries out axially position by 1 lower end of top connection and 5 shaft shoulder of compression spring guide rod；Dynamic seal ring a2 is installed between 1 lower end inside of 5 upper end outer wall of compression spring guide rod and top connection, dynamic seal ring a2 is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；Floating seal ring 6-8 is made up of floating piston 6, lip envelope 7 and lip envelope 8, and is arranged between 5 outer wall of 3 inwall of upper shell and compression spring guide rod, and floating seal ring 6-8 carries out axial limiting by 5 shaft shoulder of compression spring guide rod and 10 shaft shoulder of anti-lost joint；Dynamic seal ring b9 is installed between 10 outer wall of 3 inwall of upper shell and anti-lost joint, dynamic seal ring b9 is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；10 upper and lower side of anti-lost joint is connected by screw thread with compression spring guide rod 5 and mandrel 11 respectively, and carries out axially position by 12 shaft shoulder of adaptor；Circular groove 18 is uniformly provided with circumferentially in 12 lower end wall of adaptor, in steel rope system, 15 upper end of each steel wire rope is respectively and fixedly installed in equally distributed each circular groove 18, is integrally formed with adaptor 12；11 lower end boss outer wall of mandrel is coordinated with 14 inwall gap of lower house, the circular groove 19 corresponding with adaptor lower end circumference circular groove 18 is uniformly provided with circumferentially in boss upper end, in steel rope system, 15 lower end of each steel wire rope is respectively and fixedly installed in the circumferentially uniform circular groove 19 in 11 boss upper end of mandrel, it is integrally formed with mandrel 11, and ensure that steel rope system top and bottom keep 30～40 degree of angle of inclination to install, certain relative distance is kept between 11 boss upper end of 12 lower end of adaptor and mandrel simultaneously, state of the steel rope system in stretching is made；11 boss lower end of mandrel carries out axial limiting by 14 lower end inner wall boss of lower house, dynamic seal ring group c16 is installed between 14 lower end inner wall of 11 lower end outer wall of mandrel and lower house, dynamic seal ring c16 is the Che Shi sealings being made up of three groups of L-type sealing rings, three groups of long square seal rings and two packing rings；11 lower end of mandrel is threadedly coupled with mandrel joint 17.
In the course of work, it is connected the drilling tool with MWD as far as possible installed in the position close to drill bit by mandrel joint 17, MWD is coordinated with drill bit.During normal drilling, compression spring 4 is in compressive state, and anti-lost joint 10 and mandrel 11 are axially extending to total length to promote compression spring guide rod 5 to drive, the axially extending of mandrel 11 carries out axial limiting to anti-lost joint 10 and 14 lower end boss of lower house by 12 shaft shoulder of adaptor；When drill bit comes into contact with lithosphere broken rock, the pressure of the drill for being applied to drill bit compresses compression spring 4 by 1 lower end of drilling tool top connection, is delivered to mandrel 11 through compression spring guide rod 5 and anti-lost joint 10, then passes through WMD and be delivered on drill bit；During drilling tool shell turns clockwise, transferred torque on steel rope system lower end mandrel 11 by steel rope system upper end, mandrel joint 17 drives WMD rotations to transfer torque on drill bit, drill bit is driven to turn clockwise, after the pressure of the drill and moment of torsion are delivered on drill bit, drill bit proceeds by normal drilling；When drill bit runs into soft or hard staggeredly or during firm hard formation, there is bit freezing or larger stick-slip phenomenon in drill bit, the reaction torque which is subject to increases, when reaction torque exceedes the limit of initial setting up, drill bit starts reversion, make mandrel 11 drive steel rope system lower end to start rotate counterclockwise simultaneously, and steel rope system upper end is fixed on adaptor 12 and turns clockwise；Now, rotating counterclockwise for steel rope system lower end shrinks steel rope system, 11 axial shrinkage of contraction band moving mandrel of steel rope system, so as to reduce the cutting depth of drill bit, 5 shaft shoulder compression compression spring 4 of compression spring guide rod is driven when mandrel 11 shrinks；With the contraction of mandrel 11, the reaction torque that drill bit is subject to is gradually reduced, when reaction torque disappears, the moment of torsion being stored in the axial force and steel rope system in compression spring 4 slowly discharges, mandrel 11 gradually extends to total length with the release of 4 energy of compression spring, and normal drilling is proceeded by under the drive of steel rope system, in whole process, drill bit never leaves rock stratum.
Claims (2)
1. avoid bit freezing and reduce the anti-viscous motion instrument of stick-slip, mainly by top connection, upper shell, adaptor, lower house, dynamic sealing
Circle a, dynamic seal ring b, dynamic seal ring c, compression spring, compression spring guide rod, floating seal ring, anti-lost joint, mandrel,
O-ring seal, steel wire rope, mandrel joint composition；Characterized in that, top connection (1), upper shell (3), adaptor (12),
Pass sequentially through screw thread to be connected the shell of composition instrument between lower house (14), adaptor (12) is threadedly coupled with lower house (3)
There is O-ring seal (13) at place；In instrument inner chamber, compression spring (4) is on compression spring guide rod (5), and leads to
Crossing top connection (1) lower end and compression spring guide rod (5) shaft shoulder carries out axially position；Compression spring guide rod (5) upper end outer wall with
Dynamic seal ring a (2) is installed between top connection (1) lower end inside；Floating seal ring (6-8) is in upper shell (3)
Between wall and compression spring guide rod (5) outer wall, and entered by compression spring guide rod (5) shaft shoulder and anti-lost joint (10) shaft shoulder
Row axial limiting；Dynamic seal ring b (9) is installed between upper shell (3) inwall and anti-lost joint (10) outer wall；It is anti-lost to connect
Head (10) upper and lower side is connected by screw thread with compression spring guide rod (5) and mandrel (11) respectively, and by adaptor (12) axle
Shoulder carries out axially position；Circular groove (18) is uniformly provided with circumferentially in adaptor (12) lower end wall, each steel wire rope (15) in steel rope system
Upper end is respectively and fixedly installed in equally distributed each circular groove (18), is integrally formed with adaptor (12)；Under mandrel (11)
End outer wall of boss is coordinated with lower house (14) inwall gap, is circumferentially uniformly provided with and adaptor lower end circumference circular groove in boss upper end
(18) corresponding circular groove (19), in steel rope system, to be respectively and fixedly installed to mandrel (11) convex for each steel wire rope (15) lower end
In the circumferentially uniform circular groove in platform upper end (19), it is integrally formed with mandrel (11), and ensures that steel rope system top and bottom are protected
The angle of inclination for holding 30～40 degree is installed, while keeping certain between adaptor (12) lower end and mandrel (11) boss upper end
Relative distance, makes state of the steel rope system in stretching；Mandrel (11) boss lower end passes through lower house (14) lower end inner wall
Boss carries out axial limiting, between mandrel (11) lower end outer wall and lower house (14) lower end inner wall is provided with dynamic seal ring group
c(16)；Mandrel (11) lower end is threadedly coupled with mandrel joint (17).
2. the anti-viscous motion instrument for avoiding bit freezing and reducing stick-slip according to claim 1, it is characterised in that dynamic seal ring a (2) is
The Che Shi sealings for constituting, dynamic seal ring b (9) are stacked by three groups of L-type sealing rings, three groups of long square seal rings and two packing rings
It is that the Che Shi sealings for constituting, dynamic seal ring c are stacked by three groups of L-type sealing rings, three groups of long square seal rings and two packing rings
(16) it is that the Che Shi sealings for constituting are stacked by three groups of L-type sealing rings, three groups of long square seal rings and two packing rings, floats
Dynamic seal ring (6-8) is made up of floating piston (6), lip envelope (7) and lip envelope (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332889.2A CN106567681B (en) | 2016-05-19 | 2016-05-19 | Bit freezing is avoided with reducing the anti-viscous motion tool of stick-slip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332889.2A CN106567681B (en) | 2016-05-19 | 2016-05-19 | Bit freezing is avoided with reducing the anti-viscous motion tool of stick-slip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106567681A true CN106567681A (en) | 2017-04-19 |
| CN106567681B CN106567681B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610332889.2A Active CN106567681B (en) | 2016-05-19 | 2016-05-19 | Bit freezing is avoided with reducing the anti-viscous motion tool of stick-slip |
Country Status (1)
| Country | Link |
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| CN (1) | CN106567681B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170204684A1 (en) * | 2014-07-18 | 2017-07-20 | Siceno S.A.R.L. | Downhole tool |
| CN110014523A (en) * | 2019-05-15 | 2019-07-16 | 吉林大学 | A kind of pull-alongs self-balancing circular hole reaming through-hole device |
| CN111622673A (en) * | 2019-02-28 | 2020-09-04 | 中国石油化工股份有限公司 | Well drilling assisting tool |
| CN111734321A (en) * | 2020-07-02 | 2020-10-02 | 合力（天津）能源科技股份有限公司 | Three-dimensional constant-stability device |
| CN115522873A (en) * | 2022-11-28 | 2022-12-27 | 西南石油大学 | Torque self-adaptive impact tool suitable for PDC drill bit |
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| US20170204684A1 (en) * | 2014-07-18 | 2017-07-20 | Siceno S.A.R.L. | Downhole tool |
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| CN115522873A (en) * | 2022-11-28 | 2022-12-27 | 西南石油大学 | Torque self-adaptive impact tool suitable for PDC drill bit |
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| CN106567681B (en) | 2018-06-15 |
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Effective date of registration: 20201125 Address after: 221600 Yang Tun Zhen Yang Tun Cun, Pei County, Xuzhou City, Jiangsu Province Patentee after: Peixian Changyun Machinery Manufacturing Co., Ltd Address before: No. 8 Road, Xindu Xindu District of Chengdu city of Sichuan Province in 610500 Patentee before: SOUTHWEST PETROLEUM University |
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