CN203905899U - Surface controlled subsurface safety valve - Google Patents
Surface controlled subsurface safety valve Download PDFInfo
- Publication number
- CN203905899U CN203905899U CN201420328440.5U CN201420328440U CN203905899U CN 203905899 U CN203905899 U CN 203905899U CN 201420328440 U CN201420328440 U CN 201420328440U CN 203905899 U CN203905899 U CN 203905899U
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- China
- Prior art keywords
- piston rod
- valve
- valve plate
- central tube
- safety valve
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- Expired - Fee Related
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Abstract
The utility model relates to a surface controlled subsurface safety valve, and belongs to the field of subsurface operation tools of oil wells and gas wells. The safety valve comprises a center pipe, an upper connector, a lower connector and a piston rod. The upper connector and the lower connector are installed at the two ends of the center pipe respectively through threads. A valve seat is installed in the end of the portion, at one end of the lower connector, of the center pipe through internal threads and movably provided with a valve plate through a dowel. The piston rod is arranged between the upper connector and the center pipe, and one end of the piston rod is connected with the valve plate in a contact mode. The safety valve is simple in structure, novel in design, easy and convenient to operate and easy to monitor, the communication mode is flexible, and the sealing performance is reliable. The valve plate can be opened or closed through remote surface control, and therefore the bottom hole pressure is isolated, and the personal safety and the property safety are guaranteed.
Description
Technical field
The utility model relates to a kind of surface controlled subsurface safety valve, belongs to Oil/gas Well underground operation tool field.
Background technology
Oil is non-renewable resources, current exploration and development has reached degree quite widely, just day by day to desert, the severe region exploitation of environment such as ocean, plateau, the investment of its recovery process is high, have a big risk, any point error all can cause serious loss, threatening environment, even threatens life security, so its security requirement is very high.And the safety valve using in existing oil exploitation process is dumb on itself and ground mode of communicating, complicated operation, is difficult for monitoring; On sealing means adopt rubber parts sealing, frictional force is large more, assembling difficulty, and seal unreliablely, once lose efficacy, change inconvenient.
Summary of the invention
The purpose of this utility model is: provide a kind of mode of communicating flexible, easy and simple to handle, easily monitoring; Assembling is simple, and the reliable surface controlled subsurface safety valve of sealing performance.
The technical solution of the utility model is:
A kind of surface controlled subsurface safety valve, comprise central tube, top connection, lower contact and piston rod, it is characterized in that: the two ends of central tube respectively screw thread are provided with top connection and lower contact, in top connection, be provided with control connection hole, the inside, central tube termination of lower contact one end is provided with valve seat by internal thread, on valve seat, by pin, be movably installed with valve plate, between top connection and central tube, be provided with piston rod, one end of piston rod is connected with valve plate contact; Between piston rod and central tube, by back-up ring, Compress Spring is installed, between the piston rod of Compress Spring one side and central tube, be provided with black box A, between the piston rod of Compress Spring opposite side and top connection, be provided with black box B, on the valve seat of described valve plate one side, be provided with balance pipe, in balance pipe, by cluster spring, balanced ball be installed.
The beneficial effects of the utility model are;
This surface controlled subsurface safety valve is simple in structure, novel in design, mode of communicating is flexible, easy and simple to handle, easily monitoring; And sealing performance is reliable.This safety valve, by ground Long-distance Control, makes valve plate realize switching function, thereby by bottom pressure isolation, has guaranteed the person and property safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structure for amplifying schematic diagram at Figure 1A place.
In figure: 1, central tube, 2, top connection, 3, lower contact, 4, piston rod, 5, control connection hole, 6, valve seat, 7, pin, 8, valve plate, 9, balance pipe, 10, cluster spring, 11, balanced ball, 12, black box B, 13, back-up ring, 14, Compress Spring, 15, black box A.
The specific embodiment
This surface controlled subsurface safety valve comprises central tube 1, top connection 2, lower contact 3 and piston rod 4.The two ends of central tube 1 respectively screw thread are provided with top connection 2 and lower contact 3, are provided with control connection hole 5 in top connection 2, for controlling being connected of pipeline with ground hydraulic.Central tube 1 inside, termination of lower contact 3 one end is provided with valve seat 6 by internal thread, on valve seat 6, by pin 7 and torsion spring, is movably installed with valve plate 8.On the valve seat 6 of valve plate 8 one sides, be provided with balance pipe 9, in balance pipe 9, by cluster spring 10, balanced ball 11 be installed, balanced ball 11 is tightly connected with balance pipe 9 port activity.
Between top connection 2 and central tube 1, be provided with piston rod 4, one end of piston rod 4 is connected with valve plate 8 contacts.Between piston rod 4 and central tube 1, by back-up ring 13, Compress Spring 14 is installed, between the piston rod 1 of Compress Spring 14 1 sides and central tube 2, is provided with black box A15, between the piston rod 1 of Compress Spring 14 opposite sides and top connection 2, be provided with black box B12.
The promotion that the valve plate 8 of this surface controlled subsurface safety valve is opened by piston rod 12 completes, and the resilience of closing by Compress Spring 14 realizes, thereby can save unnecessary hydraulic operation, makes operation safer.
When this surface controlled subsurface safety valve is normally produced at Oil/gas Well, by control connection hole 5, pass through ground hydraulic control system pump pressure, promoting piston rod 4 moves down, push Compress Spring 14 simultaneously, piston rod 4 contacts valve plate 8 makes it in opened condition, and by the lasting maintenance of ground hydraulic, valve plate 8 is all the time in opening, thereby make oil pipe path unimpeded, guarantee normal production.
Once Oil/gas Well is in an emergency, as bottom pressure occurs extremely, or according to construction needs, by ground control system, by connecting hole 5 processed, released the internal pressure of this safety valve, Compress Spring 14 resiliences drive piston rod 4 to move up, and valve plate 8 is closed under torsion spring effect
simultaneouslybalanced ball 11 loses the pressure of piston rod 4 and fits tightly with the port of balance pipe 9 under the effect of cluster spring 10, and balance pipe 9 is formed to sealing state; Thereby by pressure isolation in down-hole.Now, valve plate 8 reverse pressure-bearings also fit tightly with valve seat 6 under pressurized condition, make its pressure-bearing more reliable, thereby have avoided the generation of the serious accidents such as casualties, blowout or marine pollution, have improved greatly the person and property safety.
When need reopen oil pipe passage and produce, first need to open the valve plate 8 of this safety valve, but aboveground down-hole now exists certain pressure poor, valve plate 8 is difficult for opening, and directly opens valve plate 8 and can have certain risk.Under the effect of ground pump pressure, piston rod 4 is stressed descending.In the stressed descending process of piston rod 4, first push Compress Spring 14, then push balanced ball 11, make its port from balance pipe 9 progressively descending, cause balance pipe 9 to be progressively the state opened into; And then bottom pressure is slowly leaked into valve seat 6, and making thus aboveground down-hole pressure balance, pump pressure is continued on ground, and piston rod 4 continues descending, can open valve plate 8, forms and produces passage.
Claims (1)
1. a surface controlled subsurface safety valve, comprise central tube (1), top connection (2), lower contact (3) and piston rod (4), it is characterized in that: the two ends of central tube (1) respectively screw thread are provided with top connection (2) and lower contact (3), in top connection (2), be provided with control connection hole (5), central tube (1) inside, termination of lower contact (3) one end is provided with valve seat (6) by internal thread, valve seat (6) is upper is movably installed with valve plate (8) by pin (7), between top connection (2) and central tube (1), be provided with piston rod (4), one end of piston rod (4) is connected with valve plate (8) contact, between piston rod (4) and central tube (1), by back-up ring (13), Compress Spring (14) is installed, between the piston rod (4) of Compress Spring (14) one sides and central tube (1), be provided with black box A(15), between the piston rod (4) of Compress Spring (14) opposite side and top connection (2), be provided with black box B(12), on the valve seat (6) of described valve plate (8) one sides, be provided with balance pipe (9), in balance pipe (9), by cluster spring (10), balanced ball (11) be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328440.5U CN203905899U (en) | 2014-06-19 | 2014-06-19 | Surface controlled subsurface safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328440.5U CN203905899U (en) | 2014-06-19 | 2014-06-19 | Surface controlled subsurface safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905899U true CN203905899U (en) | 2014-10-29 |
Family
ID=51780188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420328440.5U Expired - Fee Related CN203905899U (en) | 2014-06-19 | 2014-06-19 | Surface controlled subsurface safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203905899U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003228A (en) * | 2015-08-11 | 2015-10-28 | 荆州市赛瑞能源技术有限公司 | Hydraulically-controlled underground check valve capable of being opened/closed repeatedly |
| CN106150455A (en) * | 2015-04-01 | 2016-11-23 | 中国石油化工股份有限公司 | Located type safety control |
| CN110173233A (en) * | 2019-06-11 | 2019-08-27 | 西安石油大学 | A kind of storm valve |
| CN112282697A (en) * | 2020-11-19 | 2021-01-29 | 百勤能源科技（惠州）有限公司 | Downhole safety valve |
| CN112855077A (en) * | 2019-11-28 | 2021-05-28 | 太原理工大学 | Downhole safety valve |
-
2014
- 2014-06-19 CN CN201420328440.5U patent/CN203905899U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150455A (en) * | 2015-04-01 | 2016-11-23 | 中国石油化工股份有限公司 | Located type safety control |
| CN106150455B (en) * | 2015-04-01 | 2019-01-25 | 中国石油化工股份有限公司 | Located type safety control |
| CN105003228A (en) * | 2015-08-11 | 2015-10-28 | 荆州市赛瑞能源技术有限公司 | Hydraulically-controlled underground check valve capable of being opened/closed repeatedly |
| CN105003228B (en) * | 2015-08-11 | 2018-04-03 | 荆州市赛瑞能源技术有限公司 | A kind of underground check valve of the repeatable switch of hydraulic control |
| CN110173233A (en) * | 2019-06-11 | 2019-08-27 | 西安石油大学 | A kind of storm valve |
| CN112855077A (en) * | 2019-11-28 | 2021-05-28 | 太原理工大学 | Downhole safety valve |
| CN112282697A (en) * | 2020-11-19 | 2021-01-29 | 百勤能源科技（惠州）有限公司 | Downhole safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190619 |