CN204041006U - Hydraulic pressure well bore isolation valve - Google Patents
Hydraulic pressure well bore isolation valve Download PDFInfo
- Publication number
- CN204041006U CN204041006U CN201420548591.1U CN201420548591U CN204041006U CN 204041006 U CN204041006 U CN 204041006U CN 201420548591 U CN201420548591 U CN 201420548591U CN 204041006 U CN204041006 U CN 204041006U
- Authority
- CN
- China
- Prior art keywords
- valve body
- isolating valve
- reducing piston
- hydraulic pressure
- well bore
- 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
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model provides a kind of hydraulic pressure well bore isolation valve.This hydraulic pressure well bore isolation valve comprises top connection (1), top connection (1) lower thread is connected with isolating valve body (6), hollow reducing piston (3) is provided with in isolating valve body (6) top, sealing ring (2) is provided with between isolating valve body (6) inwall and reducing piston (3) outer wall, reducing piston (3) bottom outer wall cover has spring (4), isolating valve body (6) inwall is provided with spring retainer sheet (10), isolating valve body (6) inwall of reducing piston (3) below there is valve plate (5) by pin (8) and jump ring (9) hinge joint, isolating valve body (6) lower thread is connected with lower contact (7).This hydraulic pressure well bore isolation valve operation can not cause blowout when carrying tubing string, avoids environment pollution, and during well-flushing, the flushing fluid oil reservoir that do not bleed pollutes.
Description
Technical field:
The utility model relates to a kind of downhole tool used in oilfield technology field, specifically belongs to a kind of hydraulic pressure well bore isolation valve.
Background technology:
At present, in rod-pumped well workover operation construction process, find that there is well kick overflow phenomena, when may there is blowout out of control at any time, the blowout in uncontrollable oil pipe column, uncontrollable sucker rod pushes up, and work progress is abnormally dangerous.Constructor's safety and device security cannot ensure.Cause the problem of environment pollution.
Utility model content:
In order to overcome the deficiency that background technology exists, the utility model provides a kind of hydraulic pressure well bore isolation valve, can not cause blowout, avoid environment pollution when tubing string is carried in this hydraulic pressure well bore isolation valve operation, and during well-flushing, the flushing fluid oil reservoir that do not bleed pollutes.
The technical solution of the utility model is: this hydraulic pressure well bore isolation valve comprises top connection, top connection lower thread is connected with isolating valve body, hollow reducing piston is provided with in isolating valve body upper part, sealing ring is provided with between isolating valve inner body wall and reducing piston outer wall, reducing piston lower portion outer wall cover has spring, isolating valve inner body wall is provided with spring retainer sheet, isolating valve inner body wall below reducing piston has valve plate by pin and jump ring hinge joint, and isolating valve body lower part has been threaded lower contact.
The utility model has following beneficial effect: when this hydraulic pressure well bore isolation valve normally works, well head is suppressed, and pressure acts on reducing piston, due to captured area change reducing piston under the effect of pressure reduction move down promote valve plate open, fluid course is opened.When not having pressure, reducing piston resets under the action of the spring, and valve plate resets under the effect of jump ring, fluid course is closed, liquid can not upwards can only be flowed by unidirectional the flowing downward of this isolating valve, can not cause blowout, avoid environment pollution during pump detection and workover upper lifting pipe post.
Accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is the partial sections at A-A place in accompanying drawing 1.
In figure 1, top connection; 2, sealing ring; 3, reducing piston; 4, spring; 5, valve plate; 6, isolating valve body; 7, lower contact; 8, pin; 9, jump ring; 10, spring retainer sheet.
Detailed description of the invention:
Below in conjunction with embodiment, the utility model is described in further detail: hydraulic pressure well bore isolation valve is connected on oil pipe, hydraulic pressure well bore isolation valve comprises top connection 1, top connection 1 lower thread is connected with isolating valve body 6, hollow reducing piston 3 is provided with in isolating valve body 6 top, the external diameter on reducing piston 3 top is greater than the external diameter of bottom, when well head is suppressed, reducing piston 3 can move down, sealing ring 2 is provided with between isolating valve body 6 inwall and reducing piston 3 outer wall, reducing piston 3 bottom outer wall cover has spring 4, when well head is suppressed, reducing piston 3 moves down spring 4 and is compressed, when well head pressure disappears, spring 4 is released and reducing piston 3 is resetted, isolating valve body 6 inwall is provided with spring retainer sheet 10, isolating valve body 6 inwall below reducing piston 3 there is valve plate 5 by pin 8 and jump ring 9 hinge joint, the endoporus of isolating valve body 6 is closed by valve plate 5, be opened when External Force Acting is on valve plate 5, fluid course is open-minded, after external force disappears, the valve plate 5 closed isolating valve body 6 endoporus fluid course that resets under the effect of jump ring 9 is closed, isolating valve body 6 lower thread is connected with lower contact 7.
Claims (1)
1. a hydraulic pressure well bore isolation valve, comprise top connection (1), it is characterized in that: top connection (1) lower thread is connected with isolating valve body (6), hollow reducing piston (3) is provided with in isolating valve body (6) top, sealing ring (2) is provided with between isolating valve body (6) inwall and reducing piston (3) outer wall, reducing piston (3) bottom outer wall cover has spring (4), isolating valve body (6) inwall is provided with spring retainer sheet (10), isolating valve body (6) inwall of reducing piston (3) below there is valve plate (5) by pin (8) and jump ring (9) hinge joint, isolating valve body (6) lower thread is connected with lower contact (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548591.1U CN204041006U (en) | 2014-09-23 | 2014-09-23 | Hydraulic pressure well bore isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548591.1U CN204041006U (en) | 2014-09-23 | 2014-09-23 | Hydraulic pressure well bore isolation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041006U true CN204041006U (en) | 2014-12-24 |
Family
ID=52241684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420548591.1U Expired - Fee Related CN204041006U (en) | 2014-09-23 | 2014-09-23 | Hydraulic pressure well bore isolation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654210A (en) * | 2017-09-20 | 2018-02-02 | 新疆罡拓能源科技有限公司 | A kind of drilling well throttle type drill rod check valve |
-
2014
- 2014-09-23 CN CN201420548591.1U patent/CN204041006U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654210A (en) * | 2017-09-20 | 2018-02-02 | 新疆罡拓能源科技有限公司 | A kind of drilling well throttle type drill rod check 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 |
Granted publication date: 20141224 |