CN2809207Y - Down-hole one-way constant pressure valve - Google Patents
Down-hole one-way constant pressure valve Download PDFInfo
- Publication number
- CN2809207Y CN2809207Y CN 200520083879 CN200520083879U CN2809207Y CN 2809207 Y CN2809207 Y CN 2809207Y CN 200520083879 CN200520083879 CN 200520083879 CN 200520083879 U CN200520083879 U CN 200520083879U CN 2809207 Y CN2809207 Y CN 2809207Y
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- Prior art keywords
- constant pressure
- pressure valve
- hole
- utility
- piston
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- Expired - Fee Related
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Abstract
The utility model discloses an under well one-way constant pressure valve which comprises an upper joint, a lower joint, a piston, a spring, a liquid cylinder, a central pipe, a press cap and a sealing element. The utility model is characterized in that the outer part of the upper joint is orderly connected with the liquid cylinder and a regulating cap, and the inner part of the upper joint is orderly connected with the central pipe and the lower joint; the piston and the spring are orderly arranged between the central pipe and the liquid cylinder. The utility model has the characteristics of sleeve pipe protection and stratum pollution prevention. The utility model can realize the backwash of a well. The utility model is used in an under well operation process project of oil exploitation.
Description
One, technical field
The utility model relates to valve, the unidirectional constant pressure valve in particularly a kind of down-hole of using in oil exploitation.
Two, background technology
In the oil exploitation process, in engineering processes such as kill-job, well-flushing and processing oil pipe, working fluid is entered in the oil reservoir, oil reservoir is polluted and injures, to low pressure reservoir, some are not too qualified especially, and in a single day the working fluid that carries more solid particle enters, will more seriously result in blockage, pollute or injure, influence the benefit of oil exploitation.
Three, summary of the invention
The purpose of this utility model provides the unidirectional constant pressure valve in a kind of down-hole; realize no gland protection of pipe, make the interior liquid of oil pipe can not enter sleeve pipe, and liquid can enter oil pipe in the sleeve pipe under certain pressure; protect or prevented pollution and the injury of working fluid effectively, improve oil recovery oil reservoir.
The unidirectional constant pressure valve in down-hole described in the utility model, comprise upper and lower joint, piston, spring, fluid cylinder, central tube, pressure cap and seal, it is characterized in that described top connection is connected with fluid cylinder outward in turn and regulates cap, be connected with central tube and lower contact in the top connection in turn, be installed on piston and spring between central tube and the fluid cylinder in turn.
Wherein, described fluid cylinder is connected in top connection and regulates between the cap, and its top is provided with flowing hole.Described central tube is connected between the upper and lower joint, and its upper and lower part is provided with flowing hole.Described spring upper end contacts with piston, and the lower end is located in regulates the cap upper end.
The utility model has following advantage compared with prior art:
1, with the supporting use of oil-water well packer, matching is strong, and is effective.
2, because the high-low pressure fluid in the oil pipe can not enter sleeve pipe, make the particulate matter in working fluid and the oil pipe not enter oil reservoir, protected sleeve pipe and oil reservoir not contaminated effectively, improve reservoir recovery.
3, the cover pipe fluid can enter oil pipe under the pressure of 0.05～3.5Mpa, has the anti-flushing well function, and handling for low pressure well-flushing, kill-job and oil pipe provides strong condition, helps improving the oil exploitation earning rate.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
Consult accompanying drawing, the unidirectional constant pressure valve in a kind of down-hole mainly comprises upper and lower joint 1,12, piston 5, spring 6, fluid cylinder 7, central tube 11, pressure cap 10 and seal 2,3,4,8,9.Top connection 1 outer fluid cylinder 7 and the adjusting cap 10 of being connected with in turn is connected with central tube 11 and lower contact 12 in turn in the top connection; Be installed on piston 5 and spring 6 between central tube and the fluid cylinder in turn.
Fluid cylinder 7 is connected in top connection 1 and regulates between the cap 10, and its top is provided with flowing hole, and under certain pressure (0.1～3.5Mpa is adjustable), the cover tube fluid enters oil pipe by the flowing hole on the central tube 11.Central tube is connected between the upper and lower joint 1,12, and top, bottom are provided with flowing hole, but this flowing hole is because the isolation of piston 5 and seal, and no matter high pressure or low-pressure fluid all can not enter in the sleeve pipe, have promptly protected sleeve pipe, have prevented oil layer pollution again.Spring 6 upper ends contact with piston 5, and cap 10 upper ends be located in to be regulated in the lower end, support piston 5 up and down.Seal 2,3,4 is installed in top connection 1 on piston 5 and the central tube 11, regulate on the cap and install seal 8 and 9.
Claims (4)
1, the unidirectional constant pressure valve in a kind of down-hole, mainly comprise upper and lower joint, piston, spring, fluid cylinder, central tube, pressure cap and seal, it is characterized in that described top connection is connected with fluid cylinder outward in turn and regulates cap, be connected with central tube and lower contact in the top connection in turn, be installed on piston and spring between central tube and the fluid cylinder in turn.
2, the unidirectional constant pressure valve in down-hole according to claim 1 is characterized in that described fluid cylinder is connected between top connection and the adjusting cap, and its top is provided with flowing hole.
3, the unidirectional constant pressure valve in down-hole according to claim 1 and 2 is characterized in that described central tube is connected between the upper and lower joint, and its upper and lower part is provided with flowing hole.
4, the unidirectional constant pressure valve in down-hole according to claim 1 and 2 is characterized in that described spring upper end contacts with piston, and the lower end is located in regulates the cap upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083879 CN2809207Y (en) | 2005-06-03 | 2005-06-03 | Down-hole one-way constant pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083879 CN2809207Y (en) | 2005-06-03 | 2005-06-03 | Down-hole one-way constant pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2809207Y true CN2809207Y (en) | 2006-08-23 |
Family
ID=36925391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520083879 Expired - Fee Related CN2809207Y (en) | 2005-06-03 | 2005-06-03 | Down-hole one-way constant pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2809207Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696734A (en) * | 2013-12-20 | 2014-04-02 | 东营市福利德石油科技开发有限责任公司 | Differential-pressure type pressure release valve of marine deep well pipe column |
-
2005
- 2005-06-03 CN CN 200520083879 patent/CN2809207Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696734A (en) * | 2013-12-20 | 2014-04-02 | 东营市福利德石油科技开发有限责任公司 | Differential-pressure type pressure release valve of marine deep well pipe column |
| CN103696734B (en) * | 2013-12-20 | 2016-08-24 | 东营市福利德石油科技开发有限责任公司 | Differential-pressurtype type pressure release valve of marine deep well pipe column |
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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: 20060823 Termination date: 20100603 |