CN202381037U - Oil well casing constant pressure air release valve - Google Patents
Oil well casing constant pressure air release valve Download PDFInfo
- Publication number
- CN202381037U CN202381037U CN2011204766878U CN201120476687U CN202381037U CN 202381037 U CN202381037 U CN 202381037U CN 2011204766878 U CN2011204766878 U CN 2011204766878U CN 201120476687 U CN201120476687 U CN 201120476687U CN 202381037 U CN202381037 U CN 202381037U
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- China
- Prior art keywords
- valve
- pressure
- valve body
- cap
- bonnet
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- 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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- 239000003129 oil well Substances 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 210000002445 nipple Anatomy 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003345 natural gas Substances 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The constant pressure air release valve for oil well casing is used in oil well casing. The upper end of the sleeve gas inlet joint is connected with a valve body through threads; an annular valve seat is fixed between the sleeve gas inlet joint and the valve body, and a valve hole of the valve seat is provided with a valve ball; the upper part of the valve ball is provided with a valve cover, a spiral spring and a sealing cap, the top end of the valve body is fixed with a pressing cap through threads, and a pressure regulating jackscrew is arranged in a central screw hole of the pressing cap; a locking nut is fixed on the pressure regulating jackscrew through threads; and a natural gas outlet nipple is welded on the outer wall of the lower part of the valve body. The effect is as follows: the constant pressure valve can be adjusted in a large range, the minimum opening pressure value of the constant pressure valve is tested to be 0.5Mpa, and the defect that the conventional constant pressure air release valve cannot be opened on the pumping well with low casing pressure is effectively avoided. The safety of staff's operation has been improved. The valve cover can prevent the valve ball from being misplaced.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, particularly rod-pumped well well head sleeve pipe vent valve, the especially a kind of casing of oil-pumping well valve discharging gas under certain pressure that can adjust opening pressure.
Background technology
Oil well just has natural gas and separates out in process of production when the oil well bottom pressure is lower than the saturation pressure of crude oil, the gas accumulation of in pumpingh well, separating out expands in sleeve pipe and produces pressure; For pumpingh well, suitable casing pressure can make well fluid level remain within the reasonable range, helps improving the coefficient of fullness of pump; But casing pressure is too high, and the gas of assembling in the sleeve pipe is too much, will the operate as normal of pump be exerted an influence; A large amount of gas can make well fluid level descend; Make deep well pump receive gases affect, also can produce " gas lock " phenomenon when serious, cause pumpingh well not fuel-displaced; Therefore on the oil recovery scene, rationally control oil-pumping well sheath pressure, the amount of natural gas in the control sleeve pipe.Be a very important job, have on the scene at present through manual regular and carry out the emptying of sleeve pipe gas also to have through ball-and-seat is installed and put pressure on sleeve valve, also have through constant pressure valve and carry out the level pressure discharging.
At present; The problem that known oil-pumping well sheath valve discharging gas under certain pressure exists is: 1, safety is unreliable; Seal pressure cap through the valve body rear portion carries out pressure regulation, and range of regulation is little, and pressure regulation just makes sealing thread reduce too much; And do not know in the pressure regulation process that how many screw threads seal pressure cap also has, and the potential safety hazard that seal pressure cap is got takes place easily.Itself seals seal pressure cap; When having unloaded pine when being used for adjusting the opening pressure of constant pressure valve; The seal pressure cap gas leak phenomenon takes place easily, and the natural gas that spills can accumulate in the incubator, because incubator is a space of sealing; Natural gas is not easy diffusion, when natural gas is accumulated to the potential safety hazard that certain concentration just exists blast, catches fire.2, unreasonable structure, the valve ball of existing sleeve pipe vent valve does not have valve bonnet, as husky, valve ball was not easy playback when wax influence owing to there is not valve seat to cause wax or impurity to get lodged in easily in the middle of the helical spring, it is difficult to cause constant pressure valve to open.Range of regulation is limited can not to satisfy the requirement that oil well uses.
The utility model content
The purpose of the utility model is: a kind of oil well casing valve discharging gas under certain pressure is provided, can be with and compresses into capable sleeve pipe level pressure venting; Overcome existing sleeve pipe valve discharging gas under certain pressure and carry out pressure regulation, cause the deficiency of unsafe factor easily with seal pressure cap.
The technical scheme that the utility model adopts is: the oil well casing valve discharging gas under certain pressure; Mainly form by sleeve valve joint, pressure measurement pipe nipple, valve body, valve seat, valve ball, valve bonnet, helical spring, sealing cap, pressure regulation jackscrew, lock nut, pressure cap, gas outlet pipe nipple and rubber seal; It is characterized in that: there is screw thread sleeve valve joint lower end; Can be fixed on the well head air vent; Have the hole and be welded with the pressure measurement pipe nipple on the sleeve pipe gas inlet union wall, there is external screw thread the upper end of sleeve valve joint, and the upper end of sleeve pipe gas inlet union is through the valve body that has been threaded; Between sleeve pipe gas inlet union and valve body, be fixed with a ring-shaped valve seats, valve seat has the center valve opening; A valve ball is arranged on the valve opening of valve seat; A valve bonnet is arranged on the top of valve ball; Valve bonnet is the cylinder bodily form; The outer diameter of valve bonnet is identical with valve block internal diameter, and valve bonnet can slide in valve body, on the top of valve bonnet and a tubular sealing cap arranged in valve body; Have annular seal groove on the outer wall of sealing cap, in the seal groove of sealing cap, rubber seal is arranged; Between valve bonnet and sealing cap, helical spring is arranged; The top of valve body is fixed with pressure cap through screw thread, and there is screw at the pressure cap center, and the pressure regulation jackscrew is installed in the screw, and pressure regulation jackscrew the inner is pressed on the upper surface of sealing cap; There is the square column or the hexagon cylinder of back-up wrench the outer end of pressure regulation jackscrew; On the pressure regulation jackscrew, fix a lock nut through screw thread; Just blocked after to the end when pressure regulation jackscrew pine, can effectively prevent the pressure regulation jackscrew by pressure cap; On the valve body lower portion outer wall, be welded with the gas outlet pipe nipple.
There is downward cylinder described valve bonnet lower end, on the outer wall of cylinder air channel is arranged, and when valve bonnet upwards slided, air channel can be communicated with the gas outlet pipe nipple.
The beneficial effect of the utility model: the utility model oil well casing valve discharging gas under certain pressure; Can adjust the level pressure value on a large scale; The minimum opening pressure value of test constant pressure valve is 0.5Mpa, the disadvantage of effectively having avoided existing valve discharging gas under certain pressure on the pumpingh well that cover forces down, can't open.Can dynamically adjust the opening pressure of sleeve pipe constant pressure valve according to the pumpingh well on-site actual situations.The head of pressure regulation jackscrew (bolt) is inner at pressure cap, is just blocked by pressure cap after to the end when pressure regulation jackscrew pine, can prevent effectively that jackscrew from getting, and has improved the safety of employee's operation.Valve bonnet can prevent the valve ball dislocation.Reduced the dismounting time, be convenient to regularly constant pressure valve carried out clean and maintenance.
Description of drawings
Fig. 1 is the utility model oil well casing valve discharging gas under certain pressure structural profile sketch map.
Among the figure, 1-pressure measurement pipe nipple, 2-sleeve valve joint, 3-valve body, 4-valve ball, 5-valve seat, 6-valve bonnet, 7-helical spring, 8-sealing cap, 9-rubber seal, 10-pressure cap, 11-pressure regulation jackscrew, 12-gas outlet pipe nipple, 13-lock nut, 14-air channel.
The specific embodiment
Embodiment 1: with an oil well casing valve discharging gas under certain pressure is example, and the utility model is done further explain.
Consult Fig. 1.The utility model oil well casing valve discharging gas under certain pressure mainly is made up of sleeve valve joint 2, pressure measurement pipe nipple 1, valve body 3, valve seat 5, valve ball 4, valve bonnet 6, helical spring 7, sealing cap 8, pressure regulation jackscrew 11, lock nut 13, pressure cap 10, gas outlet pipe nipple 12 and rubber seal 9.
There is screw thread columnar sleeve valve joint 2 lower ends, can be fixed on the well head air vent.Have the hole and be welded with a pressure measurement pipe nipple 1 on sleeve pipe gas inlet union 2 walls.There is external screw thread the upper end of sleeve valve joint 2, and the upper end of sleeve pipe gas inlet union 2 is through the columnar valve body 3 that has been threaded; In sleeve pipe gas inlet union 2 upper ends, and be fixed with a ring-shaped valve seats 5 through step in valve body 3 lower ends, valve seat 5 has conical center valve opening; The valve ball 4 that a diameter 30mm is arranged on the valve opening of valve seat 5; On the top of valve ball 4 valve bonnet 6 is arranged, valve bonnet 6 is the cylinder bodily form, and the outer diameter of valve bonnet 6 is identical with valve body 3 internal diameters.There is downward cylinder valve bonnet 6 lower ends, and air channel 14 is arranged on the outer wall of cylinder.On the top of valve bonnet 6 and a tubular sealing cap 8 is arranged in valve body 3, have three road annular seal grooves on the outer wall of sealing cap 8, a rubber seal 9 is arranged in each seal groove of sealing cap 8.Between valve bonnet 6 and sealing cap 8, helical spring 7 is arranged.The top of valve body 3 is fixed with a pressure cap 10 through screw thread, and there is screw at pressure cap 10 centers, and pressure regulation jackscrew 11 is installed in the screw, and pressure regulation jackscrew 11 the inners are pressed on the upper surface of sealing cap 8; There is the square column or the hexagon cylinder of back-up wrench the outer end of pressure regulation jackscrew 11.On pressure regulation jackscrew 11, fix a lock nut 13 through screw thread.On valve body 3 bottom outer walls, be welded with gas outlet pipe nipple 12.
Claims (2)
1. oil well casing valve discharging gas under certain pressure; Mainly form by sleeve valve joint (2), pressure measurement pipe nipple (1), valve body (3), valve seat (5), valve ball (4), valve bonnet (6), helical spring (7), sealing cap (8), pressure regulation jackscrew (11), lock nut (13), pressure cap (10), gas outlet pipe nipple (12) and rubber seal (9); It is characterized in that: there is screw thread sleeve valve joint (2) lower end; Have the hole and be welded with pressure measurement pipe nipple (1) on sleeve pipe gas inlet union (2) wall; There is external screw thread the upper end of sleeve valve joint (2), and the upper end of sleeve pipe gas inlet union (2) is through the valve body that has been threaded (3); Between sleeve pipe gas inlet union (2) and valve body (3), be fixed with a ring-shaped valve seats (5), valve seat (5) has the center valve opening; A valve ball (4) is arranged on the valve opening of valve seat (5); On the top of valve ball (4) valve bonnet (6) is arranged; Valve bonnet (6) is the cylinder bodily form; The outer diameter of valve bonnet (6) is identical with valve body (3) internal diameter; On the top of valve bonnet (6) and a tubular sealing cap (8) is arranged in valve body (3), have annular seal groove on the outer wall of sealing cap (8), rubber seal (9) is arranged in the seal groove of sealing cap (8); Between valve bonnet (6) and sealing cap (8), helical spring (7) is arranged; The top of valve body (3) is fixed with pressure cap (10) through screw thread, and there is screw at pressure cap (10) center, and pressure regulation jackscrew (11) is installed in the screw, and pressure regulation jackscrew (11) the inner is pressed on the upper surface of sealing cap (8); There is the square column or the hexagon cylinder of back-up wrench the outer end of pressure regulation jackscrew (11); Go up through the fixing lock nut (13) of screw thread at pressure regulation jackscrew (11); On the outer wall of valve body (3) bottom, be welded with gas outlet pipe nipple (12).
2. oil well casing valve discharging gas under certain pressure according to claim 1 is characterized in that: there is downward cylinder described valve bonnet (6) lower end, and air channel (14) is arranged on the outer wall of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204766878U CN202381037U (en) | 2011-11-25 | 2011-11-25 | Oil well casing constant pressure air release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204766878U CN202381037U (en) | 2011-11-25 | 2011-11-25 | Oil well casing constant pressure air release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381037U true CN202381037U (en) | 2012-08-15 |
Family
ID=46629550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204766878U Expired - Fee Related CN202381037U (en) | 2011-11-25 | 2011-11-25 | Oil well casing constant pressure air release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381037U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828722A (en) * | 2012-09-03 | 2012-12-19 | 福建新达阀门有限公司 | Air relief device for casing pipe of oil well |
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN108729875A (en) * | 2017-04-19 | 2018-11-02 | 张洪新 | A kind of electronic constant pressure valve of adjustable multi-parameters sampling |
| CN109373026A (en) * | 2018-11-26 | 2019-02-22 | 江汉油田兴亚工矿配件潜江有限公司 | A kind of differential valve discharging gas under certain pressure of oil exploitation |
| CN115506751A (en) * | 2022-10-09 | 2022-12-23 | 中国石油天然气股份有限公司 | Series anti-freezing and anti-blocking constant-pressure air release device and sleeve air recovery method |
| CN116146148A (en) * | 2021-11-23 | 2023-05-23 | 中国石油天然气股份有限公司 | Novel multifunctional sleeve constant-pressure air release valve for oil well |
-
2011
- 2011-11-25 CN CN2011204766878U patent/CN202381037U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828722A (en) * | 2012-09-03 | 2012-12-19 | 福建新达阀门有限公司 | Air relief device for casing pipe of oil well |
| CN102828722B (en) * | 2012-09-03 | 2015-07-29 | 福建新达阀门有限公司 | A kind of oil well sleeve gas releasing device |
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN108729875A (en) * | 2017-04-19 | 2018-11-02 | 张洪新 | A kind of electronic constant pressure valve of adjustable multi-parameters sampling |
| CN109373026A (en) * | 2018-11-26 | 2019-02-22 | 江汉油田兴亚工矿配件潜江有限公司 | A kind of differential valve discharging gas under certain pressure of oil exploitation |
| CN109373026B (en) * | 2018-11-26 | 2024-05-10 | 江汉油田兴亚工矿配件潜江有限公司 | Differential pressure type constant pressure air release valve for petroleum exploitation |
| CN116146148A (en) * | 2021-11-23 | 2023-05-23 | 中国石油天然气股份有限公司 | Novel multifunctional sleeve constant-pressure air release valve for oil well |
| CN115506751A (en) * | 2022-10-09 | 2022-12-23 | 中国石油天然气股份有限公司 | Series anti-freezing and anti-blocking constant-pressure air release device and sleeve air recovery method |
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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: 20120815 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |