CN210134811U - Underground hydraulic telescopic pipe - Google Patents
Underground hydraulic telescopic pipe Download PDFInfo
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- CN210134811U CN210134811U CN201920626955.6U CN201920626955U CN210134811U CN 210134811 U CN210134811 U CN 210134811U CN 201920626955 U CN201920626955 U CN 201920626955U CN 210134811 U CN210134811 U CN 210134811U
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract description 6
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a flexible pipe of hydraulic pressure in pit, include outer tube (3) of establishing from the extroversion in proper order, inner tube (4) and piston (7), this flexible pipe of hydraulic pressure in pit still includes locking piece (9), be equipped with locking piece installation through-hole in the lateral wall of inner tube (4), peg graft in this locking piece installation through-hole in locking piece (9), the outside part of locking piece (9) is located outer tube (3), piston (7) are the tubular structure, when the axial displacement of inner tube (4) is followed in piston (7), the radial movement of inner tube (4) can be followed and outer tube (3) are broken away from in locking piece (9), the axial displacement of inner tube (4) can be followed in outer tube (3). The underground hydraulic telescopic pipe can compensate the influence of the extension or the shortening of the underground pipe column under the influence of pressure or temperature, so that the underground tool is in a more ideal working state, the efficiency of the underground tool is normally exerted, and the productivity of an oil well is improved.
Description
Technical Field
The utility model relates to an oil development equipment field, specific is a flexible pipe of hydraulic pressure in pit.
Background
In the middle and later stages of development of an oil field, various downhole tools are inevitably required to be put into an oil well to realize reasonable application of the productivity of the oil well, and the downhole tools are influenced by various factors, so that the elongation or shortening requirement inevitably exists, the using effect of the downhole tools is influenced, re-operation is seriously possibly caused, the productivity of the oil well is further influenced, and the operating cost of the oil well is increased. The telescopic pipe type releasing tool adopted in the prior art has a single working mode, and can only extend but not shorten, so that the application range is limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
In order to satisfy the problem that oil pipe need extend or shorten when using in the pit, the utility model provides a flexible pipe of hydraulic pressure in the pit, this flexible pipe of hydraulic pressure in the pit can compensate the influence that tubular column in the pit was extended or shortened by pressure or temperature influence to make the instrument in the pit be in more ideal operating condition, the efficiency of the instrument in the pit of normal performance improves the oil well productivity.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a flexible pipe of hydraulic pressure in pit, includes outer tube, inner tube and the piston that the cover was established in proper order from the extroversion, and this flexible pipe of hydraulic pressure in pit still includes the locking piece, is equipped with locking piece installation through-hole in the lateral wall of inner tube, and the locking piece is pegged graft in this locking piece installation through-hole, and the outside portion of locking piece is located the outer tube, and the piston is the tubular structure, and when the axial displacement of piston along the inner tube, the radial movement of inner tube and break away from the outer tube can be followed to the locking piece, and the axial displacement.
The underground hydraulic telescopic pipe further comprises an upright extension pipe, the inner pipe is in an upright state, and the lower end of the extension pipe is in threaded connection with the upper end of the inner pipe.
The inner tube is upright, and the internal surface of inner tube contains from the top down big footpath section and interior path section that connects gradually, and the locking piece is located the big footpath section in inner tube.
The surface of piston contains from the top down outer major diameter section and the external diameter section that connects gradually, and the external diameter section of piston matches the contact with the interior major diameter section of inner tube, and the external diameter section of piston matches the contact with the interior minor diameter section of inner tube.
An upper annular groove is formed in the upper portion of the outer large-diameter section of the piston, and when the piston moves downwards along the axial direction of the inner pipe, the inner portion of the locking block can enter the upper annular groove.
A sealing ring is arranged between the inner pipe and the piston, a shearing pin is connected between the outer large-diameter section of the piston and the inner large-diameter section of the inner pipe, and the shearing pin is located below the locking block.
The lower part of the outer large-diameter section of the piston is provided with a lower outer ring groove, the lower part of the inner large-diameter section of the inner pipe is provided with a lower inner ring groove, a lock spring is sleeved in the lower inner ring groove, and when the piston moves downwards along the axial direction of the inner pipe, the inner side of the lock spring can be clamped into the lower outer ring groove to lock the piston and the inner pipe.
The outer tube is the state of standing vertically, and this flexible pipe of hydraulic pressure in pit still includes the guide block, is equipped with the track spout in the lateral wall of outer tube, and the track spout sets up along the axial of outer tube, is equipped with the guide block mounting hole in the lateral wall of inner tube, and the one end of guide block is fixed in this guide block mounting hole, and the other end of guide block is located the track spout.
The guide block is positioned above the locking block, the side wall of the outer tube is internally provided with a plug, and the plug is positioned below the locking block.
The outside part and the outer tube accordant connection of locking piece, the upper end and the lower extreme of the outside part of locking piece all are equipped with the inclined plane, and when the outer tube was along the axial displacement of inner tube, the outer tube can promote the radial displacement of locking piece along the inner tube and break away from the outer tube.
The utility model has the advantages that: the extension and the lengthening of the tubular column caused by external factors of the tubular column are realized by the primary tubular column, and meanwhile, the tubular column can be disconnected by realizing the transmission torque when an accident breaks down, so that the accident handling is further facilitated.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a general schematic diagram of a downhole hydraulic telescopic pipe of the present invention.
Fig. 2 is an upper schematic view of the downhole hydraulic telescopic pipe of the present invention.
Fig. 3 is a schematic view of the lower part of the hydraulic extension tube in the well.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Figure 5 is a top view of the bolt.
1. An extension tube; 2. fastening the pin; 3. an outer tube; 4. an inner tube; 5. a track runner; 6. a guide block; 7. a piston; 8. an upper annular groove; 9. a locking block; 10. a seal ring; 11. plugging with a thread; 12. shearing off the pin; 13. a lower outer ring groove; 14. a locking spring; 15. the lower part is provided with an inner ring groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a flexible pipe of hydraulic pressure in pit, include the outer tube 3, inner tube 4 and the piston 7 of establishing from outside-in proper order, this flexible pipe of hydraulic pressure in pit still includes locking piece 9, be equipped with locking piece installation through-hole in the lateral wall of inner tube 4, locking piece 9 pegs graft in this locking piece installation through-hole, the outside portion of locking piece 9 is located outer tube 3, piston 7 is the tubular structure, when piston 7 is along the axial displacement of inner tube 4 for inner tube 4, locking piece 9 can be along the radial inboard removal of inner tube 4 and break away from outer tube 3, outer tube 3 can be relative to the axial displacement of inner tube 4 edge inner tube 4, as shown in fig. 1-5.
In the embodiment, the outer pipe 3, the inner pipe 4 and the piston 7 are in an upright state, the downhole hydraulic telescopic pipe further comprises an upright extension pipe 1, the axis of the outer pipe 3, the axis of the inner pipe 4 and the axis of the piston 7 are overlapped, and the lower end of the extension pipe 1 is in threaded connection with the upper end of the inner pipe 4. Specifically, the upper part of the extension pipe 1 is provided with internal threads to be conveniently connected with other downhole tools, the lower part of the extension pipe 1 is connected with the upper end of the inner pipe 4 through the external threads, and the connecting part is provided with a fastening pin 2.
In this embodiment, the inner surface of the inner tube 4 includes an inner large diameter section and an inner small diameter section which are sequentially connected from top to bottom, the inner diameter of the inner large diameter section is larger than the inner diameter of the inner small diameter section, the inner side portion of the locking piece 9 is connected with the piston 7 in a matching manner, the middle portion of the locking piece 9 is located in the locking piece mounting through hole of the inner tube 4, and the locking piece 9 and the locking piece mounting through hole are both located in the inner large diameter section of the inner tube 4.
In this embodiment, the interior of the piston 7 includes an inner through hole that penetrates in the axial direction, the outer surface of the piston 7 includes an outer large diameter section and an outer small diameter section that are sequentially connected from top to bottom, the outer large diameter section of the piston 7 is in matching contact with the inner large diameter section of the inner tube 4, and the outer small diameter section of the piston 7 is in matching contact with the inner small diameter section of the inner tube 4. The outer diameter of the outer large diameter section of the piston 7 is equal to the inner diameter of the inner large diameter section of the inner tube 4, and the outer diameter of the outer small diameter section of the piston 7 is equal to the inner diameter of the inner small diameter section of the inner tube 4. In the initial state, a set distance exists between the lower end surface of the outer large diameter section of the piston 7 and the upper end surface of the inner small diameter section of the inner tube 4, as shown in fig. 1 to 3.
In this embodiment, an upper annular groove 8 is formed outside an upper portion of an outer large diameter section of the piston 7, surfaces of the locking pieces 9, which are in contact with the piston 7, are all inclined surfaces, in an initial state, the upper annular groove 8 is located above the locking pieces 9, when the piston 7 moves downward in the axial direction of the inner tube 4, the locking pieces 9 can move inward in the radial direction of the inner tube 4 until an inner portion of the locking pieces 9 enters the upper annular groove 8, and an outer portion of the locking pieces 9 is separated from the outer tube 3, so that locking between the outer tube 3 and the inner tube 4 is released, and the outer tube 3 can move up and down in the axial direction of the inner tube 4 relative to the inner tube 4.
In the embodiment, a seal ring 10 is arranged between the inner pipe 4 and the piston 7, a shear pin 12 is connected between an outer large-diameter section of the piston 7 and an inner large-diameter section of the inner pipe 4, the shear pin 12 is positioned below the lock block 9, and the seal ring 10 is positioned between the shear pin 12 and the lock block 9. The area of the upper end surface of the piston 7 is larger than the area of the lower end surface of the piston 7, as shown in fig. 1 to 3.
In this embodiment, a lower outer ring groove 13 is disposed at a lower portion of the outer large diameter section of the piston 7, a lower inner ring groove 15 is disposed at a lower portion of the inner large diameter section of the inner tube 4, a locking spring 14 is sleeved in the lower inner ring groove 15, when the piston 7 moves downward along the axial direction of the inner tube 4, a lower end surface of the outer large diameter section of the piston 7 can abut against an upper end surface of the inner small diameter section of the inner tube 4, the position of the lower outer ring groove 13 corresponds to the position of the lower inner ring groove 15, the inner side of the locking spring 14 can be clamped into the lower outer ring groove 13, and the outer side of the locking spring 14 can be still clamped into the lower inner ring groove 15, so that the piston 7 and the inner tube 4 are locked, that at this time, the piston 7 can no. The bolts 14 are circular rings having openings, the bolts 14 are horizontal, the inner upper portions of the bolts 14 are inclined surfaces, and when the inclined surfaces receive axial pressure, the bolts 14 are expanded outward (i.e., the diameter of the bolts 14 is increased), and when the axial pressure disappears, the diameter of the bolts 14 automatically returns, as shown in fig. 4 and 5.
In this embodiment, this flexible pipe of hydraulic pressure in pit still includes guide block 6, is equipped with track spout 5 in the lateral wall of outer tube 3, and track spout 5 is rectangular shape structure, and the length direction of track spout 5 sets up along the axial of outer tube 3, is equipped with the guide block mounting hole in the lateral wall of inner tube 4, and the one end of guide block 6 is fixed in this guide block mounting hole, and the other end of guide block 6 is located track spout 5. The lower end of the outer tube 3 is provided with external threads to facilitate coupling with other components.
In the initial state, the guide block 6 abuts against the lower end of the track chute 5, and the guide block 6 may not abut against the lower end of the track chute 5, but the guide block 6 cannot abut against the upper end of the track chute 5. The circumferential dimension of the guide block 6 is matched with the circumferential dimension of the track runner 5, and the inner pipe 4 can transmit torque to the outer pipe 3 through the guide block 6. The guide block 6 can slide in the rail runner 5.
The guide block 6 is positioned above the locking block 9, a plug 11 is arranged in the side wall of the outer tube 3, and the plug 11 is positioned below the locking block 9. The position of the plug 11 corresponds to the position of the shear pin 12, and the plug 11 is located outside the shear pin 12, as shown in fig. 1 to 3.
In this embodiment, the outer side portion of the locking piece 9 is connected with the outer tube 3 in a matching manner, and the upper end and the lower end of the outer side portion of the locking piece 9 are both provided with an inclined surface, which is used for facilitating the separation of the locking piece 9 from the outer tube 3 when the locking piece is stressed. When the outer tube 3 moves relative to the inner tube 4 along the axial direction of the inner tube 4, the outer tube 3 can provide thrust force directed to the central line of the inner tube 4 to the locking block by means of the inclined surface, so that the locking block 9 is pushed to move inwards along the radial direction of the inner tube 4 and is separated from the outer tube 3.
The working process of the downhole hydraulic telescopic pipe is described below.
When the underground hydraulic telescopic pipe works, the underground hydraulic telescopic pipe is lowered to a designed position along with a pipe column, pressure liquid is pumped into the inner pipe 4, at the moment, because the upper end face and the lower end face of the piston 7 are positioned in a pressure system, the area of the upper end face of the piston 7 is larger than that of the lower end face of the piston 7, namely, the upper part stress is larger than that of the lower part stress, the piston 7 generates downward movement force under the action of the pressure difference, when the force reaches the shearing pressure of the shearing pin 12, the shearing pin 12 is sheared, the piston 7 continues to move downwards, when the lower end of the outer large-diameter section of the piston 7 is contacted with the inclined plane of the inner upper part of the locking spring 14, the piston 7 extrudes the locking spring 14 to expand outwards, namely, the diameter of the locking spring 14 is increased, the locking spring 14 completely enters the lower inner ring groove 15, but the diameter of the locking spring 14 is still unchanged due to the blockage of the outer large-diameter section of the piston 7, the piston 7 continues to move downwards, and when the lower end face, the position of the lower outer ring groove 13 corresponds to the position of the lower inner ring groove 15, the radial resistance on the lock spring 14 disappears, the diameter of the lock spring 14 is restored, the inner side of the lock spring 14 can be clamped into the lower outer ring groove 13, the outer side of the lock spring 14 is still clamped into the lower inner ring groove 15, so that the piston 7 is locked with the inner pipe 4, namely, the self-locking state is reached at the moment, the lower part of the locking block 9 is empty at the moment, namely, the locking block 9 is not contacted with the piston 7 any more, due to the inclined surface, a little vibration and gravity act on the outer tube 3, the locking block 9 is pushed by the outer tube 3 to move towards the direction close to the central line of the piston 7 until the locking block 9 is separated from the outer tube 3, the purpose of unlocking the outer pipe 3 and the inner pipe 4 is achieved, at the moment, under the action of the guide block 6, the guide block 6 can move up and down along the track sliding groove 5, and the outer pipe 3 can move up and down relative to the inner pipe 4.
When the torque is required to be transmitted, the extension pipe 1 is directly rotated to achieve the torque transmission effect, and the guide block 6 can only move up and down along the track and is limited to achieve the torque transmission effect when rotating.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.
Claims (10)
1. The utility model provides a flexible pipe of hydraulic pressure in pit, a serial communication port, this flexible pipe of hydraulic pressure in pit includes outer tube (3) that outside-in overlaps in proper order established, inner tube (4) and piston (7), this flexible pipe of hydraulic pressure in pit still includes locking piece (9), be equipped with locking piece installation through-hole in the lateral wall of inner tube (4), locking piece (9) are pegged graft in this locking piece installation through-hole, the outside portion of locking piece (9) is located outer tube (3), piston (7) are the tubular structure, when piston (7) along the axial displacement of inner tube (4), the radial displacement of inner tube (4) can be followed and outer tube (3) are separated from in locking piece (9), the axial displacement of inner tube (4) can be followed in outer tube (3).
2. A downhole hydraulic telescoping tube according to claim 1, characterized in that the downhole hydraulic telescoping tube further comprises an upright extension tube (1), the inner tube (4) is in an upright position, the lower end of the extension tube (1) is in threaded connection with the upper end of the inner tube (4).
3. The downhole hydraulic telescoping tube according to claim 1, characterized in that the inner tube (4) is in an upright position, the inner surface of the inner tube (4) comprises an inner large diameter section and an inner small diameter section which are connected in sequence from top to bottom, and the locking block (9) is located at the inner large diameter section of the inner tube (4).
4. A downhole hydraulic telescoping tube according to claim 3, characterized in that the outer surface of the piston (7) comprises an outer large diameter section and an outer small diameter section which are connected in sequence from top to bottom, the outer large diameter section of the piston (7) is in matching contact with the inner large diameter section of the inner tube (4), and the outer small diameter section of the piston (7) is in matching contact with the inner small diameter section of the inner tube (4).
5. A downhole hydraulic telescopic tube according to claim 4, characterized in that the piston (7) is provided with an upper annular groove (8) outside the upper part of the outer large diameter section, and the inner part of the locking piece (9) can enter the upper annular groove (8) when the piston (7) is moved downwards in the axial direction of the inner tube (4).
6. The downhole hydraulic telescoping tube according to claim 4, characterized in that a sealing ring (10) is arranged between the inner tube (4) and the piston (7), a shear pin (12) is connected between the outer large diameter section of the piston (7) and the inner large diameter section of the inner tube (4), and the shear pin (12) is located below the locking piece (9).
7. The downhole hydraulic telescoping tube according to claim 4, characterized in that the lower part of the outer large diameter section of the piston (7) is provided with a lower outer ring groove (13), the lower part of the inner large diameter section of the inner tube (4) is provided with a lower inner ring groove (15), the lower inner ring groove (15) is internally sleeved with a locking spring (14), and when the piston (7) moves downwards along the axial direction of the inner tube (4), the inner side of the locking spring (14) can be clamped into the lower outer ring groove (13) to lock the piston (7) and the inner tube (4).
8. The underground hydraulic telescopic pipe according to claim 1, wherein the outer pipe (3) is in an upright state, the underground hydraulic telescopic pipe further comprises a guide block (6), a track sliding groove (5) is formed in the side wall of the outer pipe (3), the track sliding groove (5) is arranged along the axial direction of the outer pipe (3), a guide block mounting hole is formed in the side wall of the inner pipe (4), one end of the guide block (6) is fixed in the guide block mounting hole, and the other end of the guide block (6) is located in the track sliding groove (5).
9. A downhole hydraulic telescoping tube according to claim 8, characterized in that the guide block (6) is located above the lock block (9), a plug (11) is provided in the side wall of the outer tube (3), the plug (11) being located below the lock block (9).
10. The downhole hydraulic telescopic tube according to claim 1, characterized in that the outer part of the locking piece (9) is in mating connection with the outer tube (3), and the outer part of the locking piece (9) has an inclined surface at both the upper end and the lower end, so that when the outer tube (3) moves in the axial direction of the inner tube (4), the outer tube (3) can push the locking piece (9) to move in the radial direction of the inner tube (4) and disengage from the outer tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626955.6U CN210134811U (en) | 2019-05-05 | 2019-05-05 | Underground hydraulic telescopic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626955.6U CN210134811U (en) | 2019-05-05 | 2019-05-05 | Underground hydraulic telescopic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210134811U true CN210134811U (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920626955.6U Active CN210134811U (en) | 2019-05-05 | 2019-05-05 | Underground hydraulic telescopic pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210134811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514030A (en) * | 2024-01-04 | 2024-02-06 | 青州市春晖科技发展有限公司 | Casing centralizer and use method thereof |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
-
2019
- 2019-05-05 CN CN201920626955.6U patent/CN210134811U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514030A (en) * | 2024-01-04 | 2024-02-06 | 青州市春晖科技发展有限公司 | Casing centralizer and use method thereof |
| CN117514030B (en) * | 2024-01-04 | 2024-03-15 | 青州市春晖科技发展有限公司 | Casing centralizer and use method thereof |
| CN117905395A (en) * | 2024-03-19 | 2024-04-19 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
| CN117905395B (en) * | 2024-03-19 | 2024-06-04 | 中石化西南石油工程有限公司 | Multistage adjustable compensation expansion joint for test and use method thereof |
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