CN220469867U - Cable-passing double-valve one-way valve for continuous oil pipe - Google Patents
Cable-passing double-valve one-way valve for continuous oil pipe Download PDFInfo
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- CN220469867U CN220469867U CN202321926894.8U CN202321926894U CN220469867U CN 220469867 U CN220469867 U CN 220469867U CN 202321926894 U CN202321926894 U CN 202321926894U CN 220469867 U CN220469867 U CN 220469867U
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- 238000007789 sealing Methods 0.000 claims abstract description 73
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Valve Housings (AREA)
Abstract
The utility model discloses a cable double-valve one-way valve for a continuous oil pipe, which comprises a valve sleeve assembly and a body, wherein an upper joint is arranged at the upper end of the body in a threaded manner, a first through hole and a second through hole for a cable to penetrate are respectively formed in the body, the two groups of valve sleeve assemblies are fixedly arranged in the second through hole, a slip sleeve is arranged at the bottom of the body, a slip fixing frame and a cable slip are fixedly arranged in the lower end of the slip sleeve, a sealing gland is arranged at the bottom of the cable slip, a sealing sleeve is arranged at the lower end of the slip sleeve, a sealing packing is arranged in the lower end of the sealing sleeve, the lower end of the sealing gland is positioned at the upper end of the interior of the sealing sleeve, and a lower joint is arranged at the lower end of the sealing sleeve; the utility model provides a guarantee for the auxiliary operation of the coiled tubing cable through the arranged cable double-valve one-way valve, and effectively prevents the well fluid from flowing back into the coiled tubing when the coiled tubing string or the ground equipment is failed or damaged.
Description
Technical Field
The utility model relates to the technical field of drilling, in particular to a cable double-valve one-way valve for a continuous oil pipe.
Background
Most of the oil fields in the prior art still adopt a steel wire or cable operation mode, the automation degree of the operation mode is lower, the pipe column needs to be lifted and lowered for many times in the operation process, continuous operation cannot be realized, and tool well dropping and the like are often caused by operation accidents due to well conditions or well deviation, so that the operation cost is increased; the coiled tubing operation technology has flexible rigidity, high automation degree, saves time for lifting and lowering the operation pipe column compared with the traditional operation mode, continuously and flexibly circulates working fluid underground, reduces damage to stratum, and is safer and more reliable. Most of them are currently used in workover and cementing operations. In the continuous oil pipe operation process, the separate oil pipe operation sometimes cannot meet the requirement.
For this purpose we propose a double-valve-flap check valve for continuous oil pipe.
Disclosure of Invention
It is an object of the present utility model to provide a continuous oil tube over-cable double-flapper check valve that solves or at least alleviates one or more of the above-mentioned and other problems of the prior art.
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
a double-flapper check valve for a coiled tubing over-cable comprising:
a flapper sleeve assembly;
the upper end thread of the body is provided with an upper joint, a first through hole and a second through hole for penetrating a cable are respectively formed in the body, the aperture of the first through hole is larger than that of the second through hole, two groups of valve sleeve assemblies are fixedly arranged in the second through hole, and the second through hole is formed in the lower end of the first through hole;
the bottom of the body is provided with a slip sleeve, the upper end and the lower end of the slip sleeve are both provided with openings, the inside of the lower end of the slip sleeve is fixedly provided with a slip fixing frame and a cable slip, and the bottom of the cable slip is provided with a sealing gland;
the lower extreme of slips sleeve is installed sealed sleeve, sealed sleeve's lower extreme internally mounted has sealed packing, seal gland's lower extreme is located sealed sleeve's inside upper end, sealed sleeve's lower extreme installs the lower clutch.
According to the cable double-valve one-way valve for the continuous oil pipe, the inner threads for installing the fastening nuts are formed at the upper ends of the first through holes, the hexagonal plugs are installed on the bottom threads of the second through holes, and the fastening nuts are matched with the hexagonal plugs to fix the valve sleeve assembly in the second through holes.
The cable double-valve one-way valve for the continuous oil pipe is characterized in that three outward round holes are formed in the middle of the second through hole.
In the cable-passing double-valve one-way valve for the continuous oil pipe, a slip gasket is arranged between the sealing gland and the cable slip.
In the cable-passing double-valve one-way valve for the continuous oil pipe, a slip gland nut for fixing the sealing packing is arranged at the inner lower end of the sealing sleeve in a threaded manner.
The cable double-valve-passing one-way valve for the continuous oil pipe is characterized in that a first O-shaped sealing ring is arranged on a threaded sealing groove of the lower joint, a second O-shaped sealing ring is arranged between the upper joint and the body, a third O-shaped sealing ring is arranged between the slip fixing frame and the cable slip, and a seventh O-shaped sealing ring is arranged between the lower joint and the sealing sleeve.
The cable double-valve one-way valve for the continuous oil pipe is characterized in that a screw hole for installing a plug is formed in the middle of the sealing sleeve.
In the cable double-valve check valve for the continuous oil pipe, a hexagonal platform is arranged on the outer wall of the sealing sleeve.
The cable double-valve one-way valve for the continuous oil pipe is characterized in that an inner hole for placing the slip gland nut is formed in the upper end of the lower joint.
The utility model discloses a cable double-valve one-way valve for a continuous oil pipe, which comprises a valve sleeve body, a valve, a pin shaft and a spring, wherein one end of the valve sleeve body is provided with a valve seat, the valve is rotated at a side opening of the body through the pin shaft and the spring, three stepped sealing grooves are formed in the side surfaces of the valve seat, and a fourth O-shaped sealing ring, a fifth O-shaped sealing ring and a sixth O-shaped sealing ring are respectively arranged in the three stepped sealing grooves.
The utility model has at least the following beneficial effects:
the utility model provides a guarantee for the auxiliary operation of the coiled tubing cable through the arranged cable double-valve one-way valve, and effectively prevents the well fluid from flowing back into the coiled tubing when the coiled tubing string or ground equipment is failed or damaged; the double-valve design makes the sealing more stable, the detachable valve sleeve provides convenience for the operation process, can be matched with a series of cable logging tools for use, and improves the use safety of the coiled tubing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic view of a partial structure of the present utility model.
Reference numerals illustrate:
1. an upper joint; 2. tightening the nut; 3. a flapper sleeve assembly; 4. a body; 5. a slip sleeve; 6. slip fixing frame; 7. a cable slip; 8. slip gaskets; 9. a sealing gland; 10. a sealing sleeve; 11. sealing packing; 12. slip gland nut; 13. a lower joint; 14. a first O-ring seal; 15. a second O-ring seal; 16. a third O-ring seal; 17. a plug; 18. hexagonal plug; 19. a flapper sleeve body; 20. a valve; 21. a pin shaft; 22. a spring; 23. a fourth O-ring seal; 24. a fifth O-ring seal; 25. a sixth O-ring seal; 26. a valve seat.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the implementation process of how the technical means are applied to solve the technical problems and achieve the technical effects of the present application can be fully understood and implemented accordingly.
Referring to fig. 1 to 2, an embodiment of the present utility model provides a cable-passing double-valve check valve for a continuous oil pipe, which is composed of an upper joint 1, a valve sleeve assembly 3, a body 4, a slip sleeve 5, a sealing sleeve 10 and a lower joint 13.
The valve sleeve assembly 3 comprises a valve sleeve body 19, a valve 20, a pin shaft 21 and a spring 22, wherein a valve seat 26 is arranged at one end of the valve sleeve body 19, the valve 20 rotates at the side opening of the body 4 through the pin shaft 21 and the spring 22, three step sealing grooves are formed in the side surface of the valve seat 26, and a fourth O-shaped sealing ring 23, a fifth O-shaped sealing ring 24 and a sixth O-shaped sealing ring 25 are respectively arranged in the three step sealing grooves.
The outer wall of the lower end of the upper joint 1 is provided with a hexagonal concave table upper joint 1 in a matched mode, the radial outer surface of the step surface is provided with boss external threads, the positions of the boss external threads are also provided with limiting grooves in a matched mode, the end portion of the boss external threads is provided with a sealing groove, and the lower end of the upper joint 1 is in threaded connection with the upper end of the body 4.
The upper end screw thread of body 4 is installed and is connected 1, the inside of body 4 has been seted up first through-hole and the second through-hole that is used for the cable to penetrate respectively, the aperture of first through-hole is greater than the aperture of second through-hole, two sets of valve sleeve assemblies 3 fixed mounting is in the inside of second through-hole, the second through-hole sets up the lower extreme at first through-hole, the internal thread that is used for installing the nut 2 is seted up to first through-hole upper end, hexagonal plug 18 is installed to the bottom screw thread of second through-hole, the nut 2 is fixed valve sleeve assemblies 3 inside the second through-hole to the cooperation hexagonal plug 18 tightly, three outside round holes have been seted up at the middle part of second through-hole.
The bottom screw thread of body 4 installs slips sleeve 5, and slips sleeve 5's upper end and lower extreme are the opening setting, and slips sleeve 5 is along its central circumference matching and is seted up the hole, and slips sleeve 5 upper end is equipped with great through-hole for hold the cable and pass through, and slips sleeve 5 lower extreme still matches the through-hole that is equipped with installation steel wire clamp and cable clamp, and slips sleeve 5 outer wall still is equipped with convenient to detach's hexagonal platform, and the screw thread root of slips sleeve 5 lower extreme still is equipped with O shape circle seal groove.
The lower extreme inside fixed mounting of slips sleeve 5 has slips mount 6 and cable slips 7, and the bottom of cable slips 7 is provided with gland 9, is provided with slips gasket 8 between gland 9 and the cable slips 7.
The sealing sleeve 10 is installed to the lower extreme screw thread of slips sleeve 5, and sealing sleeve 10 is inside to be offered great hole and to place sealed packing 11, and O shape circle seal groove and screw thread have been seted up along the axial to the lower extreme, and sealing gland 9's lower extreme is located sealing sleeve 10's inside upper end, and sealing sleeve 10's middle part has been offered the screw that is used for installing end cap 17, and sealing sleeve 10's outer wall is provided with the hexagonal platform that is used for convenient to detach.
The lower joint 13 is installed to the lower extreme screw thread of sealing sleeve 10, and the hole that is used for placing slips gland nut 12 is seted up to the upper end of lower joint 13, and O shape circle seal groove and screw thread have been seted up along the axial to the lower extreme.
The screw thread seal groove of the lower joint 13 is provided with a first O-shaped seal ring 14, a second O-shaped seal ring 15 is arranged between the upper joint 1 and the body 4, a third O-shaped seal ring 16 is arranged between the slip fixing frame 6 and the cable slip 7, and a seventh O-shaped seal ring is arranged between the lower joint 13 and the seal sleeve 10 for improving waterproof and sealing performance.
The installation step comprises the following steps:
the valve sleeve assembly 3 is assembled, the valve sleeve assembly 3 is installed in a second through hole of the body 4, the valve sleeve assembly 3 is fixed by a tightening nut 2 and a hexagonal plug 18, a second O-shaped sealing ring 15 is installed on a sealing groove of the upper joint 1, the upper joint 1 is in threaded connection with the body 4, a slip sleeve 5 is installed with a slip fixing frame 6 and a cable slip 7 according to the diagram 1, a slip gasket 8 is fixed by a sealing gland 9, the slip sleeve 5 is connected with the body 4, a sealing packing 11 is fixed by a slip gland nut 12 in the lower end of the sealing sleeve 10, the sealing sleeve 10 is connected with the slip sleeve 5, a first O-shaped sealing ring 14 is installed on a threaded sealing groove of the lower joint 13, and the lower joint 13 is installed on the sealing sleeve 10.
The cable-passing double-valve one-way valve is connected to the upper end of the cable measuring tool, and the pressure test is carried out by connecting the pressure test pipeline with the oil pipe, so that the pressure test is free from leakage and can be normally used.
A method for accommodating a double-flap check valve for coiled tubing logging is provided to prevent well fluid from flowing back into the coiled tubing in the event of a fault or damage to the coiled tubing string or surface equipment.
While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (10)
1. A double-valve-passing cable check valve for continuous oil pipe, comprising:
a valve sleeve assembly (3);
the cable connector comprises a body (4), wherein an upper joint (1) is arranged at the upper end of the body (4) in a threaded manner, a first through hole and a second through hole for a cable to penetrate are respectively formed in the body (4), the aperture of the first through hole is larger than that of the second through hole, two groups of valve sleeve assemblies (3) are fixedly arranged in the second through hole, and the second through holes are formed in the lower end of the first through hole;
the automatic clamping device is characterized in that a slip sleeve (5) is arranged at the bottom of the body (4), the upper end and the lower end of the slip sleeve (5) are both provided with openings, a slip fixing frame (6) and a cable slip (7) are fixedly arranged in the lower end of the slip sleeve (5), and a sealing gland (9) is arranged at the bottom of the cable slip (7);
the slip sleeve is characterized in that a sealing sleeve (10) is arranged at the lower end of the slip sleeve (5), a sealing packing (11) is arranged at the inner part of the lower end of the sealing sleeve (10), the lower end of a sealing gland (9) is positioned at the upper inner end of the sealing sleeve (10), and a lower joint (13) is arranged at the lower end of the sealing sleeve (10).
2. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: the inner thread for installing the tight nut (2) is offered to first through-hole upper end, hexagonal plug (18) is installed to the bottom screw thread of second through-hole, tight nut (2) cooperation hexagonal plug (18) will valve sleeve assembly (3) are fixed inside the second through-hole.
3. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 2, wherein: three outward round holes are formed in the middle of the second through hole.
4. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: a slip gasket (8) is arranged between the sealing gland (9) and the cable slip (7).
5. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: the slip gland nut (12) for fixing the sealing packing (11) is arranged at the inner lower end of the sealing sleeve (10) in a threaded mode.
6. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: be provided with first O shape sealing washer (14) on the screw thread seal groove of lower clutch (13), upper clutch (1) with be provided with second O shape sealing washer (15) between body (4), slips mount (6) with be provided with third O shape sealing washer (16) between cable slips (7), lower clutch (13) are established be provided with seventh O shape sealing washer between sealed sleeve (10).
7. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: the middle part of the sealing sleeve (10) is provided with a screw hole for installing the plug (17).
8. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: the outer wall of the sealing sleeve (10) is provided with a hexagonal platform.
9. The over-cable double-flapper check valve for a coiled tubing according to claim 5, wherein: an inner hole for placing the slip gland nut (12) is formed in the upper end of the lower joint (13).
10. The over-cable double-flapper check valve for a coiled tubing as claimed in claim 1, wherein: the valve sleeve assembly (3) comprises a valve sleeve body (19), a valve (20), a pin shaft (21) and a spring (22), wherein a valve seat (26) is arranged at one end of the valve sleeve body (19), the valve (20) rotates at the side opening of the body (4) through the pin shaft (21) and the spring (22), three stepped sealing grooves are formed in the side faces of the valve seat (26), and a fourth O-shaped sealing ring (23), a fifth O-shaped sealing ring (24) and a sixth O-shaped sealing ring (25) are respectively arranged in the three stepped sealing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321926894.8U CN220469867U (en) | 2023-07-20 | 2023-07-20 | Cable-passing double-valve one-way valve for continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321926894.8U CN220469867U (en) | 2023-07-20 | 2023-07-20 | Cable-passing double-valve one-way valve for continuous oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220469867U true CN220469867U (en) | 2024-02-09 |
Family
ID=89780064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321926894.8U Active CN220469867U (en) | 2023-07-20 | 2023-07-20 | Cable-passing double-valve one-way valve for continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220469867U (en) |
-
2023
- 2023-07-20 CN CN202321926894.8U patent/CN220469867U/en active Active
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