CN115929234A - Pressure test anchoring integrated screw pump anchor - Google Patents
Pressure test anchoring integrated screw pump anchor Download PDFInfo
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- CN115929234A CN115929234A CN202310218322.2A CN202310218322A CN115929234A CN 115929234 A CN115929234 A CN 115929234A CN 202310218322 A CN202310218322 A CN 202310218322A CN 115929234 A CN115929234 A CN 115929234A
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Abstract
The invention relates to the technical field of screw pump anchors, in particular to a pressure test anchoring integrated screw pump anchor.
Description
Technical Field
The invention relates to the technical field of screw pump anchors, in particular to a pressure test anchoring integrated screw pump anchor.
Background
With the wide application of screw pumps, the problems of pressure test and anchoring of the pipe column of the screw pump well are more and more prominent.
A pressure test method of a screw pump well pipe column is generally as follows: 1. starting up to suppress pressure after the pipe column and the pole column are lowered to carry out pipe column pressure test, and taking out the pipe column to cause repeated operation when the pressure test is unqualified; 2. after the pressure test valve is lowered to carry out the qualified pressure test of the pipe column, the pipe column is taken out, and then the screw pump is lowered, and two times of pipe column well completion are needed.
Common screw pump anchors fall into two types: the pressure anchor is shaped and the rotation anchor is shaped, the pressure anchor is shaped to lead the anchor tile to extend out for anchoring by the pressure of the hanging weight of the pipe column, for example, the Chinese patent application No. CN200720014657.9 discloses a lifting screw pump anchor, the rotation anchor type screw pump anchor is shaped to lead the anchor tile to extend out for anchoring by the positive rotation oil pipe, for example, the Chinese patent application No. CN201310472080.6 discloses a torque anchor and the Chinese patent application No: CN202110828684 discloses a "rotation type screw pump anchor", but above-mentioned three kinds of screw pump anchors only have the anchor tubular column function, can not realize the tubular column pressure testing, consequently need a instrument that can realize that one trip tubular column accomplishes oil pipe pressure testing and tubular column anchor.
Disclosure of Invention
In view of the above, the invention aims to provide a pressure test anchoring integrated screw pump anchor to solve the problem that the traditional pump anchor only has the function of anchoring a pipe column and cannot realize pressure test of the pipe column.
Based on the purpose, the invention provides a pressure test anchoring integrated screw pump anchor which comprises a valve cover, an upper joint, a lower joint and a central tube, wherein the lower part of the central tube is connected with the lower joint through a locking tube, the upper joint is sleeved on the upper part of the valve cover, the valve cover comprises a sealing section and a pressure relief cavity, a ball seat capable of sliding relatively is arranged on the inner side of the valve cover, the valve cover and the ball seat are limited through a pressure test shear pin, a pressure test valve ball is seated on the ball seat, a limiting plate for limiting the descending distance of the ball seat is arranged below the ball seat, a sealing ring for sealing the ball seat with the valve cover and a pressure relief hole communicated with the pressure relief cavity are arranged on the upper part of the ball seat, the lower part of the valve cover is connected with a pressure relief seat, the pressure relief seat and the valve cover are locked through a pressure test locking block, and one end of the pressure test locking block is in contact with the ball seat and can be released after the ball seat moves to a designated position;
the pressure relief device comprises a pressure relief seat, a central tube, a compression joint, a cone, an anchor tile support and an auxiliary anchoring part, wherein the bottom of the pressure relief seat is connected with a torsion tube, the outer diameter of the torsion tube is connected with a torsion joint through a key groove structure, the lower part of the torsion joint is connected with a thrust tube, the lower part of the thrust tube is connected with the compression joint through the thrust joint, the compression joint is in threaded connection with the central tube, the outer side of the lower part of the central tube is provided with the cone, the cone is limited on the central tube through an anchoring shear pin, the anchor tile is arranged below the cone, the anchor tile is seated on the anchor tile support, the anchor tile support is locked on the central tube through an anchoring lock block, and the lower part of the central tube is also provided with the auxiliary anchoring part for fixing the anchor tile;
and the inner side of the torque tube is connected with an unsealing part for driving the anchor tile to be unlocked.
Preferably, the deblocking part comprises an upper bearing joint and a lower bearing joint which are connected to the inner side of the torsion tube, the upper bearing joint is connected with a deblocking tube, the deblocking tube is locked with the central tube through a release locking block, the lower part of the deblocking tube is connected with a deblocking ring, and the deblocking ring is movably arranged on one side of the anchor deblocking locking block;
the inner diameter of the lower part of the thrust pipe is smaller than that of the upper part of the thrust pipe, so that the lower part of the thrust pipe is released when the thrust pipe is positioned at the release locking block, and the upper part of the thrust pipe is released when the thrust pipe is positioned at the release locking block.
Preferably, a compression spring is arranged between the compression joint and the cone, and the compression spring is used for setting the distance between the compression joint and the cone, so that when the compression joint is in contact with the cone, the upper part of the thrust pipe moves to the position of the release locking block.
Preferably, the compression spring is circumferentially provided with a spring sheath.
Preferably, the auxiliary anchoring part comprises an auxiliary friction block and an auxiliary anchor tile which are connected to the outer side of the lower part of the central tube, and the auxiliary friction block is used for enabling one end of the auxiliary anchor tile to be immovable and the other end of the auxiliary anchor tile to expand when the auxiliary friction block is subjected to friction.
Preferably, the key groove structure comprises at least four key grooves provided on the outer diameter of the torsion tube and a torsion pin fitted in the key grooves.
Preferably, ball seat lower part external diameter is greater than upper portion, makes the lower part be located when pressure testing locking piece department, with the contact of pressure testing locking piece, when upper portion is located pressure testing locking piece department, will the pressure testing locking piece releases.
Preferably, the pressure relief seat is sleeved with a pressure cap.
The invention has the beneficial effects that: by arranging the pressure test valve ball, the ball seat, the pressure test shear pin, the pressure test locking block and the pressure relief seat, when an oil pipe of a pump truck is connected and is being pressed, the pressure test valve ball pushes the ball seat to move downwards and shear the pressure test shear pin, and the pressure test locking block is released at the same time, so that the valve cover and the pressure relief seat are relatively displaced, when the rotary pipe column set is sealed, the valve cover moves upwards to ensure that the outer end of the ball seat is sealed and invalid, the oil sleeve is communicated, thereby completing the pressure test process, by arranging the auxiliary anchoring part, the torsion pipe, the torsion joint, the thrust pipe, the thrust joint and the compression joint, when the oil pipe rotates to move downwards and shear the anchoring shear pin, the cone is pushed to move downwards to expand the anchor tile to be in contact with the inner wall of the sleeve for anchoring, and by arranging the deblocking part for driving the anchor tile to release the anchoring, the device can realize that one pipe column completes two processes of pipe column pressure test and pipe column anchoring, and can effectively avoid the bending and eccentric wear phenomenon caused by conventional anchor pressurization, and convert the rotation force into the anchoring force, so that the anchoring phenomenon is not unstable.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an integrated screw pump anchor according to an embodiment of the present invention.
Labeled as:
1. an upper joint; 2. a valve housing; 3. testing the pressure of a valve ball; 4. a ball seat; 5. pressing the cap; 6. a pressure relief seat; 7. a pressure test locking block; 8. pressure testing and nail shearing; 9. a torsion tube; 10. a torsion joint; 11. twisting nails; 12. a thrust tube; 13. an upper load bearing joint; 14. unsealing the pipe; 15. a lower load-bearing joint; 16. a central tube; 17. a thrust joint; 18. releasing the locking block; 19. compressing the joint; 20. a compression spring; 21. a spring sheath; 22. a cone; 23. anchoring the shear pin; 24. anchoring tiles; 25. an anchor tile support; 26. the anchor unlocking and locking block; 27. unsealing the ring; 28. a locking tube; 29. an auxiliary friction block; 30. auxiliary anchor tiles; 31. a lower joint; 32. a pressure relief vent; 33. a pressure relief cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1, the embodiment of the present specification provides a pressure test anchoring integrated screw pump anchor, including valve housing 2, top connection 1, bottom connection 31 and center tube 16, wherein the lower part of center tube 16 is connected with bottom connection 31 through locking pipe 28, top connection 1 suit is on the upper portion of valve housing 2, valve housing 2 includes sealed section and pressure release chamber 33, valve housing 2 inboard is equipped with ball seat 4 that can slide relatively, spacing through pressure test shear pin 8 between valve housing 2 and the ball seat 4, seat pressure test valve ball 3 on ball seat 4, ball seat 4 below is provided with carries out spacing limiting plate to ball seat 4 downstream distance, ball seat 4 upper portion is provided with and is used for realizing sealed sealing washer between the valve housing 2, and be used for the pressure release hole 32 with pressure release chamber 33 intercommunication, the sub-unit connection of valve housing 2 has pressure release seat 6, lock through pressure test locking piece 7 between pressure release seat 6 and the valve housing 2, pressure test locking piece 7 one end and ball seat 4 contact and can be released after ball seat 4 moves to the assigned position.
The bottom of the pressure release seat 6 is connected with a torque tube 9, the outer diameter of the torque tube 9 is connected with a torque joint 10 through a keyway structure, the lower part of the torque joint 10 is connected with a thrust tube 12, the lower part of the thrust tube 12 is connected with a compression joint 19 through a thrust joint 17, the compression joint 19 is in threaded connection with a central tube 16, the outer side of the lower part of the central tube 16 is provided with a cone 22, the cone 22 is limited on the central tube 16 through an anchoring shear pin 23, the lower part of the cone 22 is provided with an anchor tile 24, the anchor tile 24 is seated on an anchor tile support 25, the anchor tile support 25 is locked on the central tube 16 through an anchor unlocking block 26, and the lower part of the central tube 16 is also provided with an auxiliary anchoring part for fixing the central tube.
The inner side of the torsion tube 9 is connected with a deblocking part which is used for driving the anchor tile 24 to be released from anchoring.
The pressure test anchoring integrated screw pump anchor provided by the embodiment of the specification is characterized in that a pressure test valve ball 3, a ball seat 4, a pressure test shear pin 8, a pressure test locking block 7 and a pressure relief seat 6 are arranged, when an oil pipe of a pump truck is positively pressurized, the pressure test valve ball 3 pushes the ball seat 4 to move downwards and shear the pressure test shear pin 8, the pressure test locking block 7 is released at the same time, the valve cover 2 and the pressure relief seat 6 are relatively displaced, the valve cover 2 moves upwards to make the outer end of the ball seat 4 lose sealing effect when the oil pipe set is seated, oil sleeve communication is completed, and a pressure test process is completed.
The concrete pressure test process is as follows:
connect pump truck oil pipe and being suppressed, pressure testing valve ball 3 promotes ball seat 4 and descends when pressure reaches a definite value, cut pressure testing shear pin 8, and continue descending to limiting plate department, release pressure testing locking piece 7 simultaneously this moment, make valve bonnet 2 and pressure release seat 6 can relative displacement, the sealing washer still removes with valve bonnet 2 this moment, be in encapsulated situation, valve bonnet 2 ascends when later rotatory tubular column group sits to seal, the sealing washer leaves the seal segment of valve bonnet 2, reach pressure release chamber 33 department, make 4 outer ends of ball seat sealed inefficacy, pressure release hole 32 and pressure release chamber 33 intercommunication, accomplish the oil jacket intercommunication, make things convenient for the rotor to transfer to target in place, thereby accomplish whole pressure testing process.
As an implementation mode, the outer diameter of the lower part of the ball seat 4 is larger than that of the upper part, so that the lower part is in contact with the pressure test locking block 7 when being positioned at the pressure test locking block 7, the upper part is in the pressure test locking block 7 and releases the pressure test locking block 7, the pressure test locking block 7 passes through a pressure test locking hole formed in the valve housing 2 and is inserted into a groove corresponding to the pressure relief seat 6, when the pressure test locking block 7 is released, the pressure test locking block 7 is released from the groove, the valve housing 2 and the pressure relief seat 6 can be displaced relatively, and the pressure test locking block 7 is arranged to form a controllable structure, so that misoperation is effectively prevented, and pressure relief in advance is avoided.
As an embodiment, the unsealing part comprises an upper bearing joint 13 and a lower bearing joint 15 connected to the inner side of the torque tube 9, the upper bearing joint 13 is connected with an unsealing tube 14, the unsealing tube 14 is locked with the central tube 16 by a release lock block 18, an unsealing ring 27 is connected to the lower part of the unsealing tube 14, and the unsealing ring 27 is movably arranged on one side of the release lock block 26;
the inner diameter of the lower portion of the thrust tube 12 is smaller than the inner diameter of the upper portion, so that the lower portion is released from the release lock 18 when the lower portion is located at the release lock, and the upper portion is released from the release lock 18 when the upper portion is located at the release lock.
A compression spring 20 is arranged between the compression joint 19 and the cone 22, the compression spring 20 is used for setting the distance between the compression joint 19 and the cone 22, when the compression joint 19 is contacted with the cone 22, the upper part of the thrust pipe 12 moves to the release locking block 18, so that the release locking block 18 has release stability, the tool is prevented from being undeployed due to the failure of the release locking block 18, and a spring sheath 21 is further arranged on the periphery side of the compression spring 20.
The specific setting process is as follows:
when the oil pipe is positively rotated, the auxiliary anchoring part is anchored on the inner wall of the sleeve, the central pipe 16 is in a static state, the pipe column continuously rotates, the upper joint 1 sequentially drives the valve cover 2 from top to bottom, the valve cover 2 drives the pressure relief seat 6, the torsion pipe 9, the torsion joint 10, the thrust pipe 12 and the thrust joint 17, the thrust joint 17 drives the compression joint 19 to rotate, the compression joint 19 and the central pipe 16 are in threaded connection, the central pipe 16 keeps static, the compression joint 19 rotates the downward compression spring 20 along the central pipe 16, the anchoring shear pin 23 is sheared in the compression process, the cone 22 starts to descend, the anchor tile support 25 is locked on the central pipe 16 through the anchor unlocking block 26, the cone 22 simultaneously expands the anchor tile 24 until the anchor tile contacts the inner wall of the sleeve to start anchoring, the pipe column continuously rotates until the compression joint 19 contacts the spring sheath 21, meanwhile, the lock block 18 is released, and the pipe column is continuously rotated to the anchor tile 24 to finish setting.
By converting the rotating force into the anchoring force, the phenomenon of unstable anchoring does not exist, and the phenomenon of bending and eccentric wear of the pipe column caused by the conventional anchor pressurization anchoring can be effectively avoided.
The specific deblocking process is as follows:
lifting the pipe column, sequentially driving the valve cover 2 by the upper connector 1 from top to bottom, driving the pressure relief seat 6 by the valve cover 2, driving the torsion tube 9 by the pressure relief seat 6, driving the lower bearing connector 15 by the torsion tube 9, driving the upper bearing connector 13 by the lower bearing connector 15, driving the deblocking tube 14 by the upper bearing connector 13, driving the deblocking ring 27 by the deblocking tube 14 to go upward to release the deblocking block, so that the anchor tile holder 25 is not locked by the deblocking block 26 any more, and is not supported by force, when the pipe column goes upward continuously, the anchor tile 24 drives the anchor tile holder 25 to go downward to the upper end of the auxiliary anchoring part, and the cone 22 can not go downward continuously under the restriction of the central tube 16, so that the cone 22 and the anchor tile 24 can not be compressed and expanded, thereby completing deblocking.
The deblocking mode of the device is automatic deblocking by lifting the pipe column, and the deblocking mode is simple and convenient to operate.
In one embodiment, the auxiliary anchoring portion includes an auxiliary friction block 29 and an auxiliary anchor shoe 30 connected to the lower outer side of the central pipe 16, and the auxiliary friction block 29 makes one end of the auxiliary anchor shoe 30 stationary by friction with the casing and the other end of the auxiliary anchor shoe 30 expand to be anchored to the inner wall of the casing, so that the central pipe 16 is in a static state.
As an embodiment, the key groove structure includes at least four key grooves provided on the outer diameter of the torsion tube 9 and a torsion pin 11 fitted in the key grooves for transmitting the rotational torque.
In one embodiment, the pressure relief seat 6 is sleeved with a pressure cap 5, and the position of the pressure relief seat 6 is limited and adjusted.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made without departing from the spirit or scope of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a screw pump anchor of pressure testing anchoring integration, includes valve bonnet (2), top connection (1), lower clutch (31) and center tube (16), center tube (16) lower part is passed through locking pipe (28) and is connected with lower clutch (31), its characterized in that, top connection (1) suit is in the upper portion of valve bonnet (2), valve bonnet (2) are including seal section and decompression chamber (33), valve bonnet (2) inboard is equipped with ball seat (4) that can relatively slide, valve bonnet (2) with carry on spacingly through pressure testing shear pin (8) between ball seat (4), seat pressure testing valve ball (3) on ball seat (4), ball seat (4) below is provided with carries out spacing limiting plate to ball seat (4) descending distance, ball seat (4) upper portion be provided with be used for with realize sealed between valve bonnet (2) sealing washer, and be used for with decompression hole (32) that decompression chamber (33) communicate, the lower part of valve bonnet (2) is connected with decompression seat (6), pressure relief seat (6) with pressure relief seat (2) with pressure testing seat (7) carry out the locking piece after the locking block (7) moves to appointed pressure testing position;
the bottom of the pressure relief seat (6) is connected with a torsion tube (9), the outer diameter of the torsion tube (9) is connected with a torsion joint (10) through a keyway structure, the lower part of the torsion joint (10) is connected with a thrust tube (12), the lower part of the thrust tube (12) is connected with a compression joint (19) through a thrust joint (17), the compression joint (19) is in threaded connection with the central tube (16), the outer side of the lower part of the central tube (16) is provided with a cone (22), the cone (22) is limited on the central tube (16) through an anchoring shear pin (23), an anchor tile (24) is arranged below the cone (22), the anchor tile (24) is seated on an anchor tile holder (25), the anchor tile holder (25) is locked on the central tube (16) through an anchoring unlocking block (26), and the lower part of the central tube (16) is also provided with an auxiliary anchoring part for fixing the central tube;
the inner side of the torsion tube (9) is connected with a deblocking part which is used for driving the anchor tile (24) to be released from anchoring.
2. The pressure test anchoring integrated screw pump anchor according to claim 1, wherein the unsealing part comprises an upper bearing joint (13) and a lower bearing joint (15) connected to the inner side of the torsion tube (9), the upper bearing joint (13) is connected with an unsealing tube (14), the unsealing tube (14) is locked with the central tube (16) through a release lock block (18), an unsealing ring (27) is connected to the lower part of the unsealing tube (14), and the unsealing ring (27) is movably arranged on one side of the unsealing lock block (26);
the inner diameter of the lower part of the thrust pipe (12) is smaller than that of the upper part, so that the lower part is released from the release locking block (18) when the lower part is positioned at the release locking block, and the upper part releases the release locking block (18) when the upper part is positioned at the release locking block.
3. The pressure test anchoring integrated screw pump anchor according to claim 2, wherein a compression spring (20) is provided between the compression joint (19) and the cone (22), and the compression spring (20) is used to set a distance between the compression joint (19) and the cone (22) so that the upper portion of the thrust tube (12) moves to the release lock (18) when the compression joint (19) contacts the cone (22).
4. The pressure test anchoring integrated screw pump anchor according to claim 3, wherein a spring sheath (21) is provided around the compression spring (20).
5. The pressure test anchoring integrated screw pump anchor according to claim 1, wherein the auxiliary anchoring portion includes an auxiliary friction block (29) and an auxiliary anchor shoe (30) connected to the outside of the lower portion of the central tube (16), the auxiliary friction block (29) being configured to make one end of the auxiliary anchor shoe (30) immovable and the other end expand when subjected to friction.
6. The pressure test anchoring integrated screw pump anchor according to claim 1, wherein the key groove structure comprises at least four key grooves provided on the outer diameter of the torsion tube (9) and a torsion pin (11) embedded in the key grooves.
7. The pressure test anchoring integrated screw pump anchor according to claim 1, wherein the ball seat (4) has a lower outer diameter larger than an upper outer diameter, so that the lower outer diameter is in contact with the pressure test locking block (7) when the lower outer diameter is located at the pressure test locking block (7), and the upper outer diameter is in contact with the pressure test locking block (7) when the upper outer diameter is located at the pressure test locking block (7), so that the pressure test locking block (7) is released.
8. The pressure test anchoring integrated screw pump anchor according to claim 1, wherein the pressure relief seat (6) is sleeved with a pressure cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310218322.2A CN115929234B (en) | 2023-03-09 | 2023-03-09 | Pressure testing anchoring integrated screw pump anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310218322.2A CN115929234B (en) | 2023-03-09 | 2023-03-09 | Pressure testing anchoring integrated screw pump anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115929234A true CN115929234A (en) | 2023-04-07 |
| CN115929234B CN115929234B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310218322.2A Active CN115929234B (en) | 2023-03-09 | 2023-03-09 | Pressure testing anchoring integrated screw pump anchor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| CN201650176U (en) * | 2010-04-29 | 2010-11-24 | 张召泉 | Rotary sitting type screw pump anchor |
| EP3421960A1 (en) * | 2017-06-26 | 2019-01-02 | Jansen AG | Pressure indicator |
| CN209067139U (en) * | 2018-12-01 | 2019-07-05 | 东营市博辉工贸有限公司 | Set reliable tubing anchor |
| CN113294105A (en) * | 2021-07-22 | 2021-08-24 | 东营市海天石油科技有限责任公司 | Rotary screw pump anchor |
| CN113417595A (en) * | 2021-07-13 | 2021-09-21 | 中国石油化工股份有限公司 | Anchoring packer and using method thereof |
| CN113738305A (en) * | 2021-11-03 | 2021-12-03 | 东营市海天石油科技有限责任公司 | Rotary pressure relief controllable pressure testing valve |
-
2023
- 2023-03-09 CN CN202310218322.2A patent/CN115929234B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| CN201650176U (en) * | 2010-04-29 | 2010-11-24 | 张召泉 | Rotary sitting type screw pump anchor |
| EP3421960A1 (en) * | 2017-06-26 | 2019-01-02 | Jansen AG | Pressure indicator |
| CN209067139U (en) * | 2018-12-01 | 2019-07-05 | 东营市博辉工贸有限公司 | Set reliable tubing anchor |
| CN113417595A (en) * | 2021-07-13 | 2021-09-21 | 中国石油化工股份有限公司 | Anchoring packer and using method thereof |
| CN113294105A (en) * | 2021-07-22 | 2021-08-24 | 东营市海天石油科技有限责任公司 | Rotary screw pump anchor |
| CN113738305A (en) * | 2021-11-03 | 2021-12-03 | 东营市海天石油科技有限责任公司 | Rotary pressure relief controllable pressure testing valve |
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| Publication number | Publication date |
|---|---|
| CN115929234B (en) | 2023-05-16 |
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