CN203239268U - Check valve type well shut-in device - Google Patents
Check valve type well shut-in device Download PDFInfo
- Publication number
- CN203239268U CN203239268U CN 201320250085 CN201320250085U CN203239268U CN 203239268 U CN203239268 U CN 203239268U CN 201320250085 CN201320250085 CN 201320250085 CN 201320250085 U CN201320250085 U CN 201320250085U CN 203239268 U CN203239268 U CN 203239268U
- Authority
- CN
- China
- Prior art keywords
- check valve
- well shut
- shaft
- blind plate
- blowout preventer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a tool for sealing a useless wellhead, in particular to a check valve type well shut-in device. According to the technical scheme, the check valve type well shut-in device comprises a spring type check valve, a well shut-in device body and a diversion relieving hole base. A blind plate is arranged inside the well shut-in device body. The center of the blind plate is provided with a through hole. The spring type check valve is mounted at the center of the blind plate. An outer cover of the well shut-in device body is provided with the diversion relieving hole base and a pressure release screwed plug. The check valve type well shut-in device has the advantages that the well shut-in device body is mounted on a shaft sleeve end segment on the wellhead; when pressure exists in a shaft, the spring type check valve is closed to play a role in sealing; when the spring type check valve loses efficacy, the pressure release screwed plug plays a role in sealing and prevents oil from spilling outside; when the pressure does not exist in the shaft, the shaft can be protected against foreign bodies thrown into the shaft by people, and therefore the blocking of the shaft is avoided.
Description
Technical field
The utility model relates to a kind of sealing tool of abandoned well head, particularly a kind of check-valve type blowout preventer.
Background technology
Along with oil field development deepens continuously, because of hole condition deterioration, low yield low energy, movingly the length that reason causes such as close, scrap and stop well and increase.Long stop that well shaft is taped the latent power and the smooth enforcement of lower step reutilization measure in order to carry out to greatest extent, the good long key link of stopping well (abandoned well) of management is exactly the quality of shut-in well measure.Because external environment condition is abominable, often suffer lawless person's destruction, cause environment pollution, workers and peasants' damages occurs; And in pit shaft, throw foreign matter, and cause the part pit shaft to be scrapped, drain the oil, recover to utilize etc. to the long suction that stops well and cause great difficulty.For solving this class problem, take to have used simple and easy blowout preventer in the past, protected to a certain extent pit shaft, but bled off pressure, regularly receive oil, aspirate, implement the monitoring of pit shaft data, existing when because of pit shaft pressure being arranged when operation recovers potential safety hazard.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has; a kind of check-valve type blowout preventer is provided, and its purpose is exactly the anti-combination of use, gives prominence to the characteristics destroying, protect pit shaft, be convenient to recover avoided; realize the protection of oil-water well pit shaft, solve the long well field control difficult problem of stopping.
Its technical scheme is: comprise spring uniflow valves, blowout preventer main body, water conservancy diversion relieving device seat, the inside of described blowout preventer main body is provided with blind plate, and the blind plate center is provided with through hole, and mounting spring formula ball-and-seat; Outer the covering of described blowout preventer main body is provided with water conservancy diversion relieving device seat, and is provided with and bleeds off pressure plug.
The beneficial effects of the utility model are: the shaft sleeve pipe end that the blowout preventer main body is installed on the well head saves, when in the pit shaft pressure being arranged, spring uniflow valves is closed and is played sealing function, when spring uniflow valves lost efficacy, bleed off pressure plug and seal, prevent the outer overflow of fluid; When not having pressure in the pit shaft, can protect pit shaft again, prevent from artificial in pit shaft, throwing away foreign matter, avoid stopping up pit shaft.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Among the upper figure: well head 1, spring uniflow valves 2, blowout preventer main body 3, water conservancy diversion relieving device seat 4, blind plate 5.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises spring uniflow valves 2, blowout preventer main body 3, water conservancy diversion relieving device seat 4, described blowout preventer main body 3 is columnar structured, is installed on the well head 1, and the inside of blowout preventer main body 3 is provided with blind plate 5, blind plate 5 centers are provided with through hole, and mounting spring formula ball-and-seat 2; Outer the covering of described blowout preventer main body 3 is provided with water conservancy diversion relieving device seat 4, and is provided with and bleeds off pressure plug.
Its operating principle and process are:
(1), behind the oil-water well closing well, the shaft sleeve pipe end that the blowout preventer main body is installed on the well head saves, and when in the pit shaft pressure being arranged, spring uniflow valves is closed and played sealing function (when spring uniflow valves lost efficacy, bleeding off pressure plug seals), prevent the outer overflow of fluid; When not having pressure in the pit shaft, can protect pit shaft again, prevent from artificial in pit shaft, throwing away foreign matter, avoid stopping up pit shaft.
(2), the long well that stops needs emptying to receive oil, suction, when operation needs emptying pressure, after bleeding off pressure the plug dismounting, install and bleed off pressure annex; Connect the pipeline that open flow is used, and on fixing; Slowly lead screw is compressed in rotation, and liquid is slowly put into tank car or ground tanks with connecting line, can construct after the emptying.
(3), the long well that stops be need to carry out data admission, test liquid level the time, take to disassemble after the emptying test liquid level annex that changes the outfit behind the blowout preventer and get final product.
Claims (1)
1. check-valve type blowout preventer, it is characterized in that: comprise spring uniflow valves (2), blowout preventer main body (3), water conservancy diversion relieving device seat (4), the inside of described blowout preventer main body (3) is provided with blind plate (5), and blind plate (5) center is provided with through hole, and mounting spring formula ball-and-seat (2); Outer the covering of described blowout preventer main body (3) is provided with water conservancy diversion relieving device seat (4), and is provided with and bleeds off pressure plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320250085 CN203239268U (en) | 2013-05-10 | 2013-05-10 | Check valve type well shut-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320250085 CN203239268U (en) | 2013-05-10 | 2013-05-10 | Check valve type well shut-in device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239268U true CN203239268U (en) | 2013-10-16 |
Family
ID=49316578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320250085 Expired - Fee Related CN203239268U (en) | 2013-05-10 | 2013-05-10 | Check valve type well shut-in device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239268U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563941A (en) * | 2014-02-07 | 2015-04-29 | 大庆金祥寓科技有限公司 | Well plugging protection barrel and grapnel anchor |
| CN109138892A (en) * | 2018-10-11 | 2019-01-04 | 王瑞东 | High pressure shut-in well oil-water well punching device under pressure and plugging holes device |
| CN110700788A (en) * | 2019-09-29 | 2020-01-17 | 魏海虎 | Broken water pipe reinforcing device |
-
2013
- 2013-05-10 CN CN 201320250085 patent/CN203239268U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563941A (en) * | 2014-02-07 | 2015-04-29 | 大庆金祥寓科技有限公司 | Well plugging protection barrel and grapnel anchor |
| CN109138892A (en) * | 2018-10-11 | 2019-01-04 | 王瑞东 | High pressure shut-in well oil-water well punching device under pressure and plugging holes device |
| CN110700788A (en) * | 2019-09-29 | 2020-01-17 | 魏海虎 | Broken water pipe reinforcing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140510 |