CN205078234U - Pressure relief safety valve for balancing pressure of oil sleeve - Google Patents
Pressure relief safety valve for balancing pressure of oil sleeve Download PDFInfo
- Publication number
- CN205078234U CN205078234U CN201520864728.9U CN201520864728U CN205078234U CN 205078234 U CN205078234 U CN 205078234U CN 201520864728 U CN201520864728 U CN 201520864728U CN 205078234 U CN205078234 U CN 205078234U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- pressure
- overcoat
- wall
- oil
- 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
- 238000000034 method Methods 0.000 abstract description 8
- 239000003129 oil well Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a pressure release relief valve of balanced oil jacket pressure has solved the problem that oil well sealing deblocking and well operation in-process need the stratum to the intraductal pressure release of oil. The pressure relief device comprises an outer sleeve and a sliding sleeve, wherein the wall of the outer sleeve is provided with a plurality of pressure relief holes, and the centers of all the pressure relief holes are positioned on the same cross section; the sliding sleeve is sleeved in the outer sleeve, the sealing ring is arranged between the outer wall of the sliding sleeve and the inner wall of the outer sleeve, the top of the sliding sleeve is provided with a plurality of round holes, an ascending limiting step of the sliding sleeve is arranged in the outer sleeve, the sliding sleeve outer wall seals the outer sleeve pressure release hole, the sliding sleeve moves downwards, and the pressure release hole in the outer sleeve is opened. The pressure relief safety valve can achieve the purpose that the stratum relieves pressure in the oil pipe, so that the pressure between the oil pipe and the casing pipe is kept balanced, the pipe column is prevented from being jacked and the pipe is prevented from flying in the operation process, and the safe construction of oil wells and water wells with high stratum pressure and large overflow capacity is ensured.
Description
Technical field
The utility model relates to a kind of safety valve, the pressure relief safety valve particularly used in oil well shut-in well deblocking, water well operation process.
Background technology
For water injection well, in operation process, if packer not deblocking, afterbody Anti-over flow uniform valves is blocked again, when lift pipe string, just easily occur tubing string voluntarily on alter.If install a pressure relief safety valve additional in most subordinate's injection well downhole flow regulator bottom, just can solve after Anti-over flow uniform valves blocking can not the problem of release.
For oil well, because shut-in well bridging plug is without pressure release passage, long-term closing well, build the pressure in well, once occur tubing string is altered in deblocking process, do not have reliable means to prevent in time, pipe will be flown, not only can damage elevator and ram block, also easily occur the security incident of casualties.If install a pressure relief safety valve additional in bridging plug bottom, just can solve bridging plug without pressure release passage, there is the problem of potential safety hazard in deblocking.
Summary of the invention
The purpose of this utility model is to provide the pressure relief safety valve of a kind of equilibrium oil cover pressure, and this safety valve can realize stratum to pressure release in oil pipe, and oil jacket is balanced, thus avoids the generation of tubing string Shang Ding and the event that flies to run affairs in operation process.
For achieving the above object, the technical solution adopted in the utility model is: a kind of pressure relief safety valve of equilibrium oil cover pressure, comprise overcoat and sliding sleeve, described coat body adopts circle nested structure, the two ends of overcoat arrange helicitic texture respectively, overcoat wall is arranged some relief holes, the center of all relief holes is on same cross section; Described sliding sleeve is inserted in overcoat, arranges joint ring between sliding sleeve outer wall and outer casing inner wall, and sliding sleeve top arranges some circular holes, the up limited step of sliding sleeve is set, initial position, sliding sleeve outer wall shutoff overcoat relief hole in overcoat, sliding sleeve is descending, puts relief hole outward and opens.
For preventing pressure relief safety valve to be knocked out because of when pulling and test, the diameter of preferred relief hole is less than the minimum outer diameter of overcoat, thus ensure that safety, the reliability of pressure relief safety valve work.
The beneficial effects of the utility model: the pressure relief safety valve of the application, the object of stratum to pressure release in oil pipe can be reached, thus make the pressure between oil pipe and sleeve pipe keep balance, avoid the generation of tubing string Shang Ding and the event that flies to run affairs in operation process, guarantee those strata pressures are high, spillway discharge is large oil, well safe construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure relief safety valve of the utility model equilibrium oil cover pressure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1: a kind of pressure relief safety valve of equilibrium oil cover pressure, comprise overcoat 1 and sliding sleeve 3, described overcoat 1 body adopts circle nested structure, and the two ends of overcoat 1 arrange helicitic texture respectively, overcoat wall is arranged some relief holes, the center of all relief holes is on same cross section; Described sliding sleeve 3 is inserted in overcoat 1, and sliding sleeve 3 two ends arrange the first joint ring 2 and the second joint ring 4 respectively, and sliding sleeve 3 top arranges some circular holes, the up limited step of sliding sleeve 3 is set, initial position, sliding sleeve outer wall shutoff overcoat relief hole in overcoat 1, sliding sleeve 3 is descending, and on overcoat 1, relief hole opens.
In the normal water filling of water injection well, oil well shut-in procedures, pressure relief safety valve is in closed condition, when needs are opened, by special tapping pin G.I.H, clashing into makes the sliding sleeve 3 in overcoat 1 descending, open the relief hole on overcoat 1, pressure release passage is opened, and completes the pressure release of sleeve pipe to oil pipe.
Claims (2)
1. the pressure relief safety valve of an equilibrium oil cover pressure, comprise overcoat and sliding sleeve, it is characterized in that: described coat body adopts circle nested structure, and the two ends of overcoat arrange helicitic texture respectively, overcoat wall is arranged some relief holes, the center of all relief holes is on same cross section; Described sliding sleeve is inserted in overcoat, arranges joint ring between sliding sleeve outer wall and outer casing inner wall, and sliding sleeve top arranges some circular holes, the up limited step of sliding sleeve is set, initial position, sliding sleeve outer wall shutoff overcoat relief hole in overcoat, sliding sleeve is descending, puts relief hole outward and opens.
2. the pressure relief safety valve of equilibrium oil cover pressure according to claim 1, is characterized in that: the diameter of described relief hole is less than the minimum outer diameter of overcoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864728.9U CN205078234U (en) | 2015-11-03 | 2015-11-03 | Pressure relief safety valve for balancing pressure of oil sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520864728.9U CN205078234U (en) | 2015-11-03 | 2015-11-03 | Pressure relief safety valve for balancing pressure of oil sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078234U true CN205078234U (en) | 2016-03-09 |
Family
ID=55430648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520864728.9U Expired - Fee Related CN205078234U (en) | 2015-11-03 | 2015-11-03 | Pressure relief safety valve for balancing pressure of oil sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078234U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080720A (en) * | 2019-05-24 | 2019-08-02 | 盐城市弘通石油机械有限公司 | A kind of balanced type shock blowout control drip |
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| CN114856515A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气股份有限公司 | Water injection well pipe column and control method thereof |
-
2015
- 2015-11-03 CN CN201520864728.9U patent/CN205078234U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| CN110080720A (en) * | 2019-05-24 | 2019-08-02 | 盐城市弘通石油机械有限公司 | A kind of balanced type shock blowout control drip |
| CN110080720B (en) * | 2019-05-24 | 2023-09-26 | 盐城市弘通石油机械有限公司 | Balanced type impact blowout prevention oil drainage device |
| CN114856515A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气股份有限公司 | Water injection well pipe column and control method thereof |
| CN114856515B (en) * | 2021-02-03 | 2023-12-26 | 中国石油天然气股份有限公司 | Water injection well pipe column and control method thereof |
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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: 20160309 Termination date: 20201103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |