CN201687435U - Annular relief valve - Google Patents
Annular relief valve Download PDFInfo
- Publication number
- CN201687435U CN201687435U CN201020175334XU CN201020175334U CN201687435U CN 201687435 U CN201687435 U CN 201687435U CN 201020175334X U CN201020175334X U CN 201020175334XU CN 201020175334 U CN201020175334 U CN 201020175334U CN 201687435 U CN201687435 U CN 201687435U
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- China
- Prior art keywords
- annulus
- upper body
- piston
- turn
- joint ring
- 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
An annular relief valve comprises an upper body, an annular pipe (2), a piston (4), a connecting sleeve (5), a seal ring (6), a spring (8) and a centering tube (9), and is characterized in that the upper body (1) is connected with the connecting sleeve (5), a lower joint (11), the annular pipe (2) and an inner tube (10) sequentially, the piston (4) and the seal ring (6) are sequentially mounted in the annulus between the upper body (1) and the annular pipe (2), and the spring (8) and the centering tube (9) are sequentially mounted between the inner tube (10) and the connecting sleeve (5). The annular relief valve is simple in structure, high in reliability and easy in installation, can realize normal water injection and backwashing when a ground hydraulic control pipeline controls the sealing piston to open or close, can realize normal water injection even when the hydraulic control pipeline is in decompression or failure, can realize reverse high-pressure seal to the annulus after the hydraulic control pipelines finish decompression, and can be applied to water injection processes in petroleum production widely.
Description
One, technical field
The present invention relates to oil exploitation down-hole control device, particularly a kind of annulus safety valve,
Two, background technology
Traditional oil-field flooding down-hole skill tubing string connects the injection allocation water nozzle by down-hole string and constitutes, and for the onshore oil field water injection technology has been made indelible contribution, but it exists following shortcoming or deficiency simultaneously: 1. can not reach the Ground Control injected water volume; 2. can not reach meticulous water filling and accurately injection allocation; Though 3. concentric double pipe water injection technology tubing string can reach Ground Control and meticulous, accurate water filling, lack the security control facility, marine water filling can't be implemented.
Three, summary of the invention
The purpose of this invention is to provide a kind of annulus safety valve, adopt liquid controling pipe line Ground Control and piston, the structure of spring reset and seal ring seal prevents the appearance of blowout or overflow phenomena effectively and overcomes shortcoming or the deficiency that exists in the above-mentioned prior art.
Annulus safety valve of the present invention, comprise upper body, annulus line, piston, adapter sleeve, joint ring, turn, spring, set upright tube, interior pipe and lower contact, it is characterized in that described upper body in turn with adapter sleeve, lower contact and annulus line, interior pipe is connected, piston and joint ring are installed in the annular space between upper body and the annulus line in turn, spring are installed in the annular space between interior pipe and the adapter sleeve in turn and set upright tube.
Wherein, described externally is connected with lower contact with adapter sleeve in turn, is connected with interior pipe with annulus line in turn in the upper body.Described joint ring is installed on piston, annulus line and sets upright between the tube.Described spring is installed in the annular space between adapter sleeve and the interior pipe, and its upper end withstands on the piston lower end, and its lower end is seated the lower contact upper end.The sealing surface of described joint ring is for being bordering on anti-" Z " font structure.Top, described upper body one side is provided with a shoulder, which is provided with the axis through bore that connects the Ground Control pipeline.
According to above-mentioned principle, described joint ring can be also that sealing surface with annulus line is inside inclined plane structure and the sealing surface of joint ring and annulus line is outside inclined plane structure.
The present invention has following advantage compared with prior art:
(1) simple in structure, the reliability height is installed easily;
(2) can be by the switch of ground liquid controling pipe line control packed-piston;
(3) normally water filling and anti-flushing well under the situation that packed-piston is opened; Also normally water filling under the situation of liquid controling pipe line pressure release or inefficacy;
(4) after the liquid controling pipe line pressure release, can partly carry out the high back voltage sealing to annular space;
Four, description of drawings
Fig. 1 is a kind of example structure schematic diagram of the present invention
Fig. 2 is for pressing seal ring structure enlarged diagram shown in Figure 1
Fig. 3 is the another kind of structural representation by joint ring shown in Figure 1
Fig. 4 is the another kind of structural representation by joint ring shown in Figure 1
Five, the specific embodiment
Consult Fig. 1-Fig. 2, a kind of annulus safety valve comprises upper body 1, annulus line 2, piston 4, adapter sleeve 5, joint ring 6, turn 7, spring 8, sets upright tube 9, interior pipe 10 and lower contact 11.Upper body 1 in turn with adapter sleeve 5, lower contact 11 and annulus line 2, interior pipe 10 is connected, and piston 4 and joint ring 6 are installed in the annular space between upper body 1 and the annulus line 2 in turn, spring 8 is installed in the annular space between interior pipe 10 and the adapter sleeve 5 in turn and sets upright tube 9.
Be connected with lower contact 11 with adapter sleeve 5 in turn outside the upper body 1, be connected with interior pipe 10 with annulus line 2 in turn in the upper body 1.Joint ring 6 is installed on piston 4, annulus line 2 and sets upright between the tube 9.Spring 8 is installed in the annular space between adapter sleeve 5 and the interior pipe 10, and its upper end is equipped with the turn 7 that withstands on piston 4 lower ends, and its lower end is seated lower contact 11 upper ends.The sealing surface of joint ring 6 is for being bordering on anti-" Z " font structure.1 top, upper body, one side is provided with a shoulder, which is provided with the axis through bore that connects the Ground Control pipeline.
The outside inclined plane structure that is sealed into of joint ring 6 and annulus line 2.1 top, described upper body, one side is provided with a shoulder, which is provided with the axis through bore of the pipeline that is connected face control pipeline." O " RunddichtringO 3 is installed in upper body 1, annulus line 2, interior pipe 10 and the lower contact 11.
Claims (8)
1. annulus safety valve, comprise upper body (1), annulus line (2), piston (4), adapter sleeve (5), joint ring (6), turn (7), spring (8), set upright tube (9), interior pipe (10) and lower contact (11), it is characterized in that described upper body (1) in turn with adapter sleeve (5), lower contact (11) and annulus line (2), interior pipe (10) is connected, piston (4) and joint ring (6) are installed in the annular space between upper body (1) and the annulus line (2) in turn, spring (8) are installed in the annular space between interior pipe (10) and the adapter sleeve (5) in turn and set upright tube (9).
2. annulus safety valve according to claim 1 is characterized in that being connected with lower contact (11) with adapter sleeve (5) in turn outside the described upper body (1), is connected with interior pipe (10) with annulus line (2) in turn in upper body (1).
3. annulus safety valve according to claim 1 and 2, it is characterized in that described joint ring (6) be installed on piston (4), annulus line (2) and set upright the tube (9) between.
4. annulus safety valve according to claim 1 is characterized in that described spring (8) is installed in the annular space between adapter sleeve (5) and the interior pipe (10), and its upper end withstands on piston (4) lower end, and its lower end is seated lower contact (11) upper end.
5. annulus safety valve according to claim 1, the sealing surface that it is characterized in that described joint ring (6) is for being bordering on anti-" Z " font structure.
6. annulus safety valve according to claim 1 and 2 is characterized in that top, described upper body (1) one side is provided with a shoulder, which is provided with the axis through bore that connects the Ground Control pipeline.
7. according to claim 3 or 5 described annulus safety valves, it is characterized in that the described joint ring (6) and the sealing surface of annulus line (2) are inside inclined plane structure.
8. according to claim 3 or 5 described annulus safety valves, it is characterized in that the outside inclined plane structure that is sealed into of described joint ring (6) and annulus line (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175334XU CN201687435U (en) | 2010-04-21 | 2010-04-21 | Annular relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175334XU CN201687435U (en) | 2010-04-21 | 2010-04-21 | Annular relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687435U true CN201687435U (en) | 2010-12-29 |
Family
ID=43375719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020175334XU Expired - Fee Related CN201687435U (en) | 2010-04-21 | 2010-04-21 | Annular relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687435U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839117A (en) * | 2010-04-21 | 2010-09-22 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN102094596A (en) * | 2010-12-30 | 2011-06-15 | 中国海洋石油总公司 | Locking device for downhole sliding sleeve of intelligent well and operation method thereof |
| CN103147714A (en) * | 2013-03-05 | 2013-06-12 | 中国海洋石油总公司 | Annulus safety device applied to electric submersible pump producing well |
| CN114482922A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Annular safety control device for multi-pipe production string and method using annular safety control device |
-
2010
- 2010-04-21 CN CN201020175334XU patent/CN201687435U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839117A (en) * | 2010-04-21 | 2010-09-22 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN101839117B (en) * | 2010-04-21 | 2014-04-02 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN102094596A (en) * | 2010-12-30 | 2011-06-15 | 中国海洋石油总公司 | Locking device for downhole sliding sleeve of intelligent well and operation method thereof |
| CN102094596B (en) * | 2010-12-30 | 2013-08-21 | 中国海洋石油总公司 | Locking device for downhole sliding sleeve of intelligent well and operation method thereof |
| CN103147714A (en) * | 2013-03-05 | 2013-06-12 | 中国海洋石油总公司 | Annulus safety device applied to electric submersible pump producing well |
| CN114482922A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Annular safety control device for multi-pipe production string and method using annular safety control device |
| CN114482922B (en) * | 2020-10-27 | 2024-05-24 | 中国石油化工股份有限公司 | Annular space safety control device for multitube production tubular column and method for using annular space safety control 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: 20101229 Termination date: 20110421 |