CN209855751U - Safety valve forced opening tool - Google Patents
Safety valve forced opening tool Download PDFInfo
- Publication number
- CN209855751U CN209855751U CN201920501799.0U CN201920501799U CN209855751U CN 209855751 U CN209855751 U CN 209855751U CN 201920501799 U CN201920501799 U CN 201920501799U CN 209855751 U CN209855751 U CN 209855751U
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- shaft core
- safety valve
- sleeve
- diameter
- flow pipe
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Abstract
The lower end of the upper shaft core is provided with a diameter-increasing inclined plane, and the lower section of the safety valve forced opening tool is sleeved with an annular forced opening locking block capable of expanding; after the upper shaft core moves downwards to expand the diameter of the strong unlocking block, the strong unlocking block props against the inner wall of the flow pipe to further push the flow pipe to open the valve clack; the diameter of the upper section of the lower shaft core is larger than that of the lower section; the lower section is sleeved with an annular locking key capable of expanding; after the lower shaft core moves downwards to expand the diameter of the locking key, the locking key pushes the flow pipe until the flow pipe protrudes outwards and deforms; the outward-protruding deformation is clamped at the profile step of the inner wall of the safety valve. The utility model provides a problem that can't be opened when the relief valve breaks down, guaranteed the production operation of oil well.
Description
Technical Field
The utility model relates to an oil gas field development instrument in the pit, specifically speaking are relief valve instrument of opening by force.
Background
The underground safety valve is an underground tool which is arranged in an oil gas well and can be closed emergently to prevent well blowout, ensure measures of the oil gas well and ensure production safety when production facilities have fire alarm, pipeline breakage and irresistible natural disasters. The double-tube safety valve disclosed in the chinese patent CN 201510348869.X, the spring cylinder, the flow tube are connected to the hydraulic cavity, the inner wall of the spring cylinder and the outer wall of the flow tube cooperate with two movable sealing components to form a piston chamber, a power spring is placed in the piston chamber, the spring cylinder is connected to the outer cylinder through an adapter, the lower end of the outer cylinder is connected to the transfer joint, a valve flap assembly and an action assembly are sequentially installed in the space between the adapter, the transfer joint and the outer cylinder, the lower end of the transfer joint is connected to the liquid passing tube, a liquid injection hole is formed in the liquid passing tube, and the lower end of the liquid passing tube is connected to and inserted into the sealing seat.
When the underground safety valve fails and cannot be opened, the oil and gas well cannot normally produce, and at the moment, a safety valve forced opening tool needs to be put in for opening the valve clack of the safety valve and establishing a production channel.
The patent CN201120498726.4 discloses a forced opening tool for an underground safety valve, which comprises a seating part and a body which are of an integral structure, wherein the body is provided with a water hole and is of a hollow structure; the seating part is provided with a joint with a fishing diameter; the water hole holes are formed in the upper end and the lower end of the body, so that the steel wire shocking operation can be conveniently carried out manually, and the safety valve is successfully and forcibly opened; the safety is high, and the operation risk is less.
The patent CN201520911176.2 discloses a forced opening tool for an underground safety valve, wherein a throwing and dragging device mainly comprises a dragging head, a central tube and an outer tube, an elastic claw is arranged between the central tube and the outer tube for fixing, and the outer tube is provided with a locking block and an elastic sheet for locking the safety valve; the sealing device comprises a lower working barrel, an upper joint and a lower joint, wherein the lower working barrel is provided with an upper and a lower two-way sealing structures, so that the underground operation procedure is simplified, the operation efficiency is improved, and the operation safety is improved.
Disclosure of Invention
The utility model discloses a solve current problem, aim at providing a relief valve instrument of opening by force.
In order to achieve the above object, the utility model discloses a technical scheme be: be equipped with the flow pipe in the relief valve, throw into during the use and put into the flow pipe, including the upper shaft core and the lower shaft core that connect gradually to and forced unlocking locking piece and locking key, wherein:
the lower end of the upper shaft core is provided with a diameter-increasing inclined plane, namely the diameter of the lower section of the upper shaft core is smaller than that of the upper section; an annular strong unlocking block capable of performing expanding motion is sleeved below (namely, the lower section of) the diameter-increasing inclined plane; after the upper shaft core moves downwards to expand the diameter of the strong unlocking block, the strong unlocking block props against the inner wall of the flow pipe to further push the flow pipe to open the valve clack;
the lower shaft core is divided into an upper section and a lower section through the side surface of the circular truncated cone, and the diameter of the upper section is larger than that of the lower section; the lower section is sleeved with an annular locking key capable of expanding;
after the lower shaft core moves downwards to expand the diameter of the locking key, the locking key pushes the flow pipe until the flow pipe protrudes outwards and deforms; the outward deformation is clamped at the profile step of the inner wall of the safety valve, so that the flow pipe cannot rebound.
The inner wall of the positioning sleeve is detachably connected with the upper shaft core through the shear pin; namely, after the shear pin is broken, the upper shaft core moving downwards is separated from the shear pin.
The cutting shaft is sleeved on the outer wall of the upper shaft core and fixedly connected with the upper shaft core; the inner wall of the positioning sleeve is in separable connection with the shear shaft through the shear pin; the lower end of the shearing shaft is provided with a diameter increasing inclined plane, and the lower end of the upper shaft core penetrates through the lower end of the shearing shaft and is connected with the upper end of the lower shaft core.
Wherein, the O-shaped sealing ring is arranged between the shearing shaft and the positioning sleeve.
Wherein, still including being used for bearing the salvage head of jarring, the upper end of going up the axle core is through the lower extreme fixed mounting of salvage head shear pin and salvage head.
The forced unlocking device is characterized by further comprising a forced unlocking sleeve, wherein the forced unlocking sleeve is arranged at the lower end of the positioning sleeve, an opening is formed in the side wall of the forced unlocking sleeve, and the forced unlocking block performs diameter expanding movement from the inside to the outside of the forced unlocking sleeve opening.
The limiting ring is arranged on the outer side below the shearing shaft and on the inner side of the forced sleeve.
The lower end of the positioning sleeve and the upper end of the forced opening sleeve are supported and installed through a support ring, a V-shaped seal and a pressure ring; the upper side end face of the support ring is a plane, and the lower side end face of the support ring is a V-shaped bulge; the end surface of the lower side of the V-shaped groove corresponds to the end surface of the V-shaped seal; the V-shaped groove corresponds to the end face of the upper side of the compression ring.
The locking mechanism comprises a locking sleeve, a locking key and a locking bolt, wherein the locking sleeve is arranged at the lower end of a forced opening sleeve, an opening is formed in the side wall of the locking sleeve, and the locking key does expanding movement from the opening of the side wall of the locking sleeve; the lower end of the locking sleeve is connected with the lower outer sleeve.
Wherein, still include power spring, install between strong cover and the lower mandrel of opening, its upper end supports in the lower extreme of spacing ring, and its lower extreme supports in the upper end of locking cover.
The outer wall of the positioning sleeve is provided with a profile structure and is suspended on the safety valve; so that the positioning sleeve, the forced opening sleeve and the locking sleeve are kept fixed in the downward moving process of the upper mandrel and the lower mandrel.
Compared with the prior art, the utility model utilizes the forced unlocking block to expand outwards, pushes against the flow pipe of the safety valve and pushes the flow pipe, so that the valve clack is opened, thereby opening the production channel; and then the diameter is expanded outwards through the locking key, so that the flow pipe is pushed against to deform and cannot rebound, the safety valve is permanently opened, the problem that the safety valve cannot be opened when the safety valve fails is solved, and the production operation of the oil well is ensured.
Drawings
Fig. 1a and 1b are schematic structural diagrams of an embodiment of the present invention;
fig. 2a and 2b are explanatory views of an embodiment of the present invention;
FIG. 2c is an enlarged view of a portion of FIG. 2a circled;
fig. 3a and 3b are explanatory views of an embodiment of the present invention;
fig. 4a and 4b are explanatory views of the use of an embodiment of the present invention;
FIG. 4c is an enlarged partial view of FIG. 4a, circled;
FIGS. 5a and 5b are schematic structural views of the locking block
Fig. 6a and 6b are schematic structural views of the strong unlocking block.
Fig. 7a and 7b are schematic structural views of the locking key.
In the above figures, fig. 1a and 1b, 2a and 2b, 3a and 3b, and 3a and 3b are respectively spliced end to form a schematic diagram of the whole embodiment;
referring to the attached drawing, 1-a fishing head, 2-an adjusting ring, 3-an upper mandrel, 4-a locking block, 5-a shearing shaft, 6-a strong opening sleeve, 7-a limiting ring, 8-a strong opening block, 9-a lower mandrel, 10-a locking sleeve, 11-a locking key, 12-a lower outer sleeve, 13-a power spring, 14-a shearing pin, 15-a pressing ring, 16-a supporting ring, 17-a V-shaped seal, 18-a positioning sleeve, 19-a fishing head shearing nail, 20-an O-shaped sealing ring and 21-a profile structure of the positioning sleeve.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1a to 7b, fig. 1a to 7b show an embodiment of the present invention, a flow pipe is arranged in a safety valve, and the embodiment is put into the flow pipe when in use, and specifically includes an upper shaft core 3 and a lower shaft core 9, and a strong unlocking block 8 and a locking key 11, which are connected in sequence, wherein:
the upper end of the upper shaft core 3 is fixedly arranged through a fishing head shear pin 19 and the lower end of a fishing head 1 for bearing the shock, and the adjusting ring 2 is arranged on the outer wall of the upper shaft core 3.
Referring to fig. 1a and 1b, the lower end of the upper shaft core 3 is provided with a diameter-increasing inclined plane, i.e. the diameter of the lower section is smaller than that of the upper section; an annular strong unlocking block 8 which can do expanding motion is sleeved below (namely the lower section of) the diameter-increasing inclined plane.
The lower shaft core 9 is divided into an upper section and a lower section through the side surface of the circular truncated cone, and the diameter of the upper section is larger than that of the lower section; the lower section is sleeved with an annular locking key 11 which can perform expanding movement.
Preferably, the outer wall of the upper shaft core 3 is also connected with a positioning sleeve 18. The shearing shaft 5 is sleeved on the outer wall of the upper shaft core 3 and fixedly connected with the outer wall; the inner wall of the positioning sleeve 18 is detachably connected with the shear shaft 5 through the shear pin 14; i.e. the shear pin 14 is broken, the upper shaft core 3 is separated from it.
Referring to fig. 1b, the lower end of the shear shaft 5 is provided with a diameter-increasing slope, and the lower end of the upper shaft core 3 penetrates through the lower end of the shear shaft 5 and is connected with the upper end of the lower shaft core 9.
The forced-open sleeve 6 is arranged at the lower end of the positioning sleeve 18, an opening is arranged on the side wall of the forced-open sleeve, and the forced-open locking block 8 expands outwards from the inside of the opening of the forced-open sleeve 6. The limiting ring 7 is arranged at the lower outer side of the shearing shaft 5 and at the inner side of the forced open sleeve 6.
The locking sleeve 10 is arranged at the lower end of the forced opening sleeve 6, an opening is formed in the side wall of the locking sleeve 10, and the locking key 11 performs expanding movement from the opening in the side wall of the locking sleeve 10; the lower end of the locking sleeve 10 is connected to the lower outer sleeve 12.
The power spring 13 is arranged between the forced opening sleeve 6 and the lower mandrel 9, the upper end of the power spring is propped against the lower end of the limiting ring 7, and the lower end of the power spring is propped against the upper end of the locking sleeve 10.
The outer wall of the positioning sleeve 18 is provided with a profile structure 21 and is suspended on the safety valve; so that the positioning sleeve 18, the forced opening sleeve 6 and the locking sleeve 10 are kept fixed during the downward movement of the upper mandrel 3 and the lower mandrel 9.
Referring to fig. 2a to 2c, in use, the fishing head 1 of the present embodiment is manually jarred to move downwards, the shear pin 14 is cut off, and the upper core shaft 3 and the shear shaft 5 move downwards while breaking free from the constraint of the locating sleeve 18. The diameter increasing inclined plane is arranged at the upper end of the contact surface of the shearing shaft 5 and the forced unlocking locking block 8 on the upper mandrel 3, once the upper mandrel 3 moves downwards, the diameter of the internal contact of the forced unlocking locking block 8 is increased, the forced unlocking locking block 8 generates diameter expanding movement outwards along the opening of the forced unlocking sleeve, and then the flow pipe in the safety valve is supported.
Referring to fig. 3a and 3b and fig. 6a and 6b, the upper mandrel 3 continues to move downwards, the power spring 13 is compressed, the forced unlocking block 8 pushes the flow pipe of the safety valve to move downwards until the forced unlocking block 8 moves to the tail end of the forced unlocking sleeve opening, the flow pipe pushes the spring of the safety valve, the valve clack of the safety valve is opened, and the production channel is opened.
Referring to fig. 4a, 4b and fig. 7a, 7b, the upper mandrel 3 continues to push the lower mandrel 9 in motion. Similar to the upper spindle 3, there is a truncated cone side on the lower spindle 9; before the lower spindle 9 is not moved, the inner end surface of the locking key 11 contacts the lower section, i.e., the small diameter portion, of the lower spindle 9; when the lower mandrel 9 is pushed, the inner end surface of the locking key 11 gradually contacts the upper section of the lower mandrel 9, namely the larger diameter part, the locking key 11 expands outwards, and the outer end surface of the locking key 11 pushes against and deforms the flow pipe of the safety valve.
Referring to fig. 4b and 4c, a second profile step exists on the inner wall of the safety valve at the deformation position of the flow pipe, so that the deformation position of the flow pipe is clamped at the profile step, the flow pipe cannot rebound, and the opening state of the valve clack of the safety valve is maintained.
When the stroke of the upper mandrel 3 and the lower mandrel 9 is finished, the locking block 4 is clamped on the positioning sleeve.
Furthermore, preferably, an O-ring 20 is mounted between the shear shaft 5 and the locating bush 18; the lower end of the positioning sleeve 18 and the upper end of the strong opening sleeve 6 are mounted and supported through a support ring 16, a V-shaped seal 17 and a pressure ring 15; wherein, the upper side end face of the support ring 16 is a plane, and the lower side end face is a V-shaped bulge; the end surface of the lower side of the V-shaped groove corresponds to the V-shaped groove of the upper end surface of the V-shaped seal 17 and is a V-shaped bulge; the V-shaped grooves corresponding to the end faces of the upper side of the compression ring 15 play a role in sealing.
The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are not intended to limit the present invention, and those skilled in the art can make modifications as required, and all changes and modifications within the scope of the appended claims are within the scope of protection.
Claims (10)
1. The utility model provides a relief valve opens instrument by force, be equipped with the flow tube in the relief valve, throw into the flow tube during the use, its characterized in that: including the upper shaft core and the lower shaft core that connect gradually to and strong unlocking block and locking key, wherein:
the lower end of the upper shaft core is provided with a diameter-increasing inclined plane, namely the diameter of the lower section of the upper shaft core is smaller than that of the upper section; the lower section is sleeved with a strong unlocking block capable of expanding; after the upper shaft core moves downwards to expand the diameter of the strong unlocking block, the strong unlocking block props against the inner wall of the flow pipe to further push the flow pipe to open the valve clack;
the lower shaft core is divided into an upper section and a lower section through the side surface of the circular truncated cone, and the diameter of the upper section is larger than that of the lower section; the lower section is sleeved with a locking key capable of expanding;
after the lower shaft core moves downwards to expand the diameter of the locking key, the locking key pushes the flow pipe until the flow pipe protrudes outwards and deforms; the outward deformation is clamped at the profile step of the inner wall of the safety valve, so that the flow pipe cannot rebound.
2. The safety valve ajar tool of claim 1, wherein: the inner wall of the positioning sleeve is detachably connected with the upper shaft core through a shear pin; namely, after the shear pin is broken, the upper shaft core moving downwards is separated from the shear pin.
3. The safety valve ajar tool of claim 2, wherein: the shearing shaft is sleeved on the outer wall of the upper shaft core and fixedly connected with the upper shaft core; the inner wall of the positioning sleeve is in separable connection with the shear shaft through the shear pin; the lower end of the shearing shaft is provided with a diameter increasing inclined plane, and the lower end of the upper shaft core penetrates through the lower end of the shearing shaft and is connected with the upper end of the lower shaft core.
4. The safety valve ajar tool of claim 1, wherein: the fishing device also comprises a fishing head used for bearing the jarring, and the upper end of the upper shaft core and the lower end of the fishing head are fixedly installed.
5. The safety valve forced opening tool according to claim 1 or 2, characterized in that: the lower end of the positioning sleeve is provided with an opening, and the forced unlocking block performs diameter expanding movement from the inside to the outside of the opening of the forced unlocking sleeve.
6. The safety valve ajar tool of claim 5, wherein: the limiting ring is arranged on the outer side below the shearing shaft and on the inner side of the forced sleeve.
7. The safety valve ajar tool of claim 5, wherein: the lower end of the positioning sleeve and the upper end of the forced opening sleeve are supported and installed through a support ring, a V-shaped seal and a pressure ring; the upper side end face of the support ring is a plane, and the lower side end face of the support ring is a V-shaped bulge; the end surface of the lower side of the V-shaped groove corresponds to the end surface of the V-shaped seal; the V-shaped groove corresponds to the end face of the upper side of the compression ring.
8. The safety valve ajar tool of claim 5, wherein: the locking key is arranged at the opening of the side wall of the locking sleeve and performs expanding motion from the opening of the side wall of the locking sleeve; the lower end of the locking sleeve is connected with the lower outer sleeve.
9. The safety valve ajar tool of claim 8, wherein: the upper end of the power spring is propped against the lower end of the limiting ring, and the lower end of the power spring is propped against the upper end of the locking sleeve.
10. The safety valve forced opening tool according to claim 8 or 9, characterized in that: the outer wall of the positioning sleeve is provided with a profile structure and is suspended on the safety valve; so that the positioning sleeve, the forced opening sleeve and the locking sleeve are kept fixed in the downward moving process of the upper mandrel and the lower mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501799.0U CN209855751U (en) | 2019-04-15 | 2019-04-15 | Safety valve forced opening tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501799.0U CN209855751U (en) | 2019-04-15 | 2019-04-15 | Safety valve forced opening tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209855751U true CN209855751U (en) | 2019-12-27 |
Family
ID=68937451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920501799.0U Active CN209855751U (en) | 2019-04-15 | 2019-04-15 | Safety valve forced opening tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209855751U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927390A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN113464091A (en) * | 2021-06-21 | 2021-10-01 | 湖南唯科拓石油科技服务有限公司 | A reaming is instrument of opening by force for in relief valve in pit |
| CN113494270A (en) * | 2020-03-19 | 2021-10-12 | 中国海洋石油集团有限公司 | Full-bore forced opening tool for underground safety valve |
-
2019
- 2019-04-15 CN CN201920501799.0U patent/CN209855751U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494270A (en) * | 2020-03-19 | 2021-10-12 | 中国海洋石油集团有限公司 | Full-bore forced opening tool for underground safety valve |
| CN113494270B (en) * | 2020-03-19 | 2023-05-09 | 中国海洋石油集团有限公司 | Full-drift-diameter forced opening tool for underground safety valve |
| CN111927390A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN111927390B (en) * | 2020-08-17 | 2021-10-29 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN113464091A (en) * | 2021-06-21 | 2021-10-01 | 湖南唯科拓石油科技服务有限公司 | A reaming is instrument of opening by force for in relief valve in pit |
| CN113464091B (en) * | 2021-06-21 | 2023-02-17 | 湖南唯科拓石油科技服务有限公司 | A reaming is instrument of opening by force for in relief valve in pit |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Xibo Inventor after: Zhang Weibo Inventor after: Zheng Lingyun Inventor after: Zeng Shijun Inventor after: Yang Yanchao Inventor before: Yu Xibo Inventor before: Zhang Weibo Inventor before: Zheng Lingyun Inventor before: Zeng Shijun |