CN100425797C - Control system of well mouth release valve - Google Patents
Control system of well mouth release valve Download PDFInfo
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- CN100425797C CN100425797C CNB2005100891736A CN200510089173A CN100425797C CN 100425797 C CN100425797 C CN 100425797C CN B2005100891736 A CNB2005100891736 A CN B2005100891736A CN 200510089173 A CN200510089173 A CN 200510089173A CN 100425797 C CN100425797 C CN 100425797C
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- 239000007789 gas Substances 0.000 description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010892 electric spark Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The invention relates to a well safety valve control system, which comprises: an air-powered pressurizing pump and a ground safety valve control circuit, wherein said ground safety valve control circuit comprises one high-pressure needle valve, one-way valve, a pressure meter, and an energy accumulator; one overflow valve is between the one-way valve and the pressure meter; one end of high-pressure needle valve is connected to the air-powered pressurizing pump; one end of energy accumulator is connected to the ground safety valve and connected to the air source; another high-pressure needle valve is between the one-way valve and the pressure meter; the under-well safety valve control circuit is between the air-powered pressurizing pump and the under-well safety valve; said circuit comprises one high-pressure needle valve, one-way valve, pressure meter, and energy accumulator which are connected; another branch is between the one-way valve and the pressure meter, whose another end is connected between the one-way valve and the pressure meter; said branch has two one-way valves; one high-pressure needle valve is between two one-way valves.
Description
Technical field
The present invention relates to a kind of from deep-well the equipment of recover petroleum or natural gas, the well head safe control valve device of especially a kind of oil or natural gas.
Background technology
At present, the opening pressure of the safety valve of the domestic the Northwest of China overwhelming majority oil gas well is about 15000psi (100MPa), and the conventional hydraulic device that existing device adopts, maximum working pressure can only reach 5000psi (35MPa), can't satisfy instructions for use.Owing to use the on-the-spot high inflammable and explosive occasion of concentration of natural gas that is, require explosive-proof grade to reach more than the EXD II BT4, adopt electric hydraulic pump and electromagnetic valve in the device and have, can make system's heating up during work and be easy to generate electric spark, there is serious potential safety hazard, and prior art can only be controlled surface safety valve (SSV), and can't control storm valve.When producing, the oil gas well need keep the state of driving a well for a long time, and very high to the voltage stabilizing requirement of well head safe control valve device like this, and the control valve in the existing device is a sliding valve structure, leakage rate is too big, can't keep oil gas well ordinary production when unattended.When pressure oscillation exceeded setting range in the oil recovery tracheae line, control system should be closed well mouth release valve immediately, and the accident that prevents takes place.And can't realize this function in the existing device.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned technology, provide a kind of safe and reliable, neither can produce electric spark, have the high and low pressure voltage-limiting protection again, and can realize the well head safe control valve device of Long-distance Control.
The object of the present invention is achieved like this:
A kind of well head safe control valve device, comprise high-pressure pump, the surface safety valve (SSV) control loop, described surface safety valve (SSV) control loop comprises stop valve, one way valve, pressure meter, accumulator, four link to each other successively, and between one way valve and pressure meter, overflow valve is set, the stop valve other end connects high-pressure pump, the accumulator other end connects surface safety valve (SSV), described stop valve is a high-pressure needle valve, high-pressure pump is pneumatic booster pump, and be connected with the pipeline source of the gas, in described surface safety valve (SSV) control loop, establish a high-pressure needle valve in addition between one way valve and the pressure meter, also be provided with the storm valve control loop between described pneumatic booster pump and the storm valve, this loop comprises high-pressure needle valve, one way valve, pressure meter, accumulator, four link to each other successively, and between the one way valve in this loop and pressure meter, establish a branch in addition, the described branch other end is connected in the surface safety valve (SSV) control loop between the one way valve and pressure meter, this branch is provided with two one way valves, is connected with a high-pressure needle valve between described two one way valves.Described surface safety valve (SSV) control loop further is provided with a high-low pressure control loop, comprise two Pneumatic valves, be connected in the surface safety valve (SSV) control loop between the one way valve and pressure meter, also comprise a high pressure guide shut-off valve and a low pressure guide shut-off valve, both ends are connected respectively with two Pneumatic valves, between pneumatic booster pump and pipeline source of the gas, be provided with a reducing valve and pressure meter, the pipeline source of the gas is connected to pneumatic booster pump as driving source of the gas after reducing pressure, other has a source of the gas branch road as control source of the gas elder generation and height, low pressure guide's shut-off valve links to each other respectively, be connected to two Pneumatic valves more respectively, the pipeline source of the gas is with high, low pressure guide's shut-off valve connects, and described pipeline source of the gas is provided with pressure meter.Well head safe control valve device of the present invention also comprises the urgent closing well loop that is connected to form by Pneumatic valve and three way cock.
Be connected with described Pneumatic valve between two one way valves between surface safety valve (SSV) control loop of the present invention and the storm valve control loop in the branch, described three way cock one end links to each other with the control source of the gas, and the other end links to each other with described Pneumatic valve.
Well head safe control valve device of the present invention compared with prior art has following good effect:
1) adopt air driven pump and guide's shut-off valve, do not introduce power supply in the The whole control system, no electric spark produces, and does not have any potential safety hazard; The output hydraulic pressure of pneumatic booster pump can be regulated arbitrarily simultaneously, and it changes along with the change that drives air pressure, and air driven pump quits work automatically when the output pressure of pneumatic booster pump reaches setting value, and system does not need overflow, and the oil temperature just can not raise, and it is reliable to be perfectly safe; And can satisfy the higher opening pressure needs of safety valve in the oil gas well of some areas.
2) high-pressure needle valve and Pneumatic valve all are the stop valves of zero leakage, adopt the metal conical surface seal, can under high pressure keep zero leakage for a long time, make the long steady operation of system.
3) adopt the high-low pressure control loop; the situation that the line pressure that causes because of artificial incorrect operation, pipeline explosion, obstruction, wax deposition, freeze etc. is exceeded the setting pressure scope is controlled; both can protect wellhead equipment and pipeline safety; protect petroleum resources, prevent to pollute; can guarantee well head operate as normal in certain pressure limit again, steady production.
4) long-range urgent closing well loop is set, takes place when wellhead equipment is produced when unusual, the staff can directly send instruction at the janitor's room away from the scene, closes whole wellhead equipment automatically.
Description of drawings
Fig. 1 is a well head safe control valve device schematic diagram of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
See also Fig. 1, a kind of well head safe control valve device, comprise high-pressure pump 11, manual pump 12,13, the surface safety valve (SSV) control loop, described surface safety valve (SSV) control loop comprises stop valve 22, one way valve 32, pressure meter 62, accumulator 82, four link to each other successively, and between one way valve 32 and pressure meter 62, overflow valve 51 is set, stop valve 22 1 ends connect high-pressure pump 11, accumulator 82 1 ends connect surface safety valve (SSV), described stop valve 22 is a high-pressure needle valve, high-pressure pump 11 is pneumatic booster pump, and be connected with the pipeline source of the gas, in described surface safety valve (SSV) control loop, establish a high-pressure needle valve 24 between one way valve 32 and the pressure meter 62 in addition, also be provided with the storm valve control loop between described pneumatic booster pump and the storm valve, this loop comprises high-pressure needle valve 21, one way valve 31, pressure meter 61, accumulator 81, four link to each other successively, and between the one way valve 31 in this loop and pressure meter 61, establish a branch in addition, the described branch other end is connected in the surface safety valve (SSV) control loop between the one way valve 32 and pressure meter 62, this branch is provided with two one way valves 33,34, at described two one way valves 33, be connected with a high-pressure needle valve 23 between 34.
Be provided with a reducing valve and pressure meter between pneumatic booster pump and pipeline source of the gas, the pipeline source of the gas is connected to pneumatic booster pump as driving source of the gas after reducing pressure, and other has a source of the gas branch road as the control source of the gas.
Described surface safety valve (SSV) control loop further is provided with a high-low pressure control loop, comprise two Pneumatic valves 42,43, be connected in the surface safety valve (SSV) control loop between the one way valve 32 and pressure meter 62, also comprise a high pressure guide shut-off valve 71 and a low pressure guide shut-off valve 72, high pressure guide shut-off valve 71 1 ends link to each other with the pipeline source of the gas, the other end links to each other with the control source of the gas with Pneumatic valve 42, low pressure guide's shut-off valve 72 1 end pipeline sources of the gas link to each other, the other end links to each other with the control source of the gas with Pneumatic valve 43, and described pipeline source of the gas is provided with pressure meter 63.
Described well head safe control valve device also comprises urgent closing well loop, described urgent closing well loop comprises Pneumatic valve 41 and three way cock 91, pipeline between two one way valves 33,34 between described surface safety valve (SSV) control loop and the storm valve control loop in the branch links to each other with described Pneumatic valve 41, described three way cock 91 1 ends link to each other with the control source of the gas, and the other end links to each other with described Pneumatic valve 41.
When opening high-pressure needle valve 24, the release of surface safety valve (SSV) control loop, surface safety valve (SSV) is closed, and one way valve 34 is kept apart the storm valve control loop, and storm valve can not closed.
When opening high-pressure needle valve 23, the release simultaneously of storm valve control loop and surface safety valve (SSV) control loop, storm valve and surface safety valve (SSV) are closed fully.
When line pressure was excessive, 71 commutations of guide's shut-off valve were connected, so the control source of the gas is delivered to Pneumatic valve 42, Pneumatic valve 42 will be opened like this, the release of surface safety valve (SSV) control loop, and surface safety valve (SSV) is closed.
When line pressure was too small, 72 commutations of guide's shut-off valve were connected, so the control source of the gas is delivered to Pneumatic valve 43, Pneumatic valve 43 will be opened like this, the release of surface safety valve (SSV) control loop, and surface safety valve (SSV) is closed.
When the long-range urgent closing well of needs, operating room can directly be controlled, operation three way cock 91, and the control source of the gas is delivered to Pneumatic valve 41, and Pneumatic valve 41 is opened, and down-hole and the release of surface safety valve (SSV) control loop are so storm valve and surface safety valve (SSV) are closed fully.
Because of the High Pressure Shutoff Valve 21 and 22 as stop valve is contained in down-hole and the surface safety valve (SSV) control loop before the high- pressure needle valve 23,24 and Pneumatic valve 41,42,43 as unloader, even because maloperation, forget and close High Pressure Shutoff Valve 21,22, also can not influence the closing well function.
Claims (2)
1. well head safe control valve device, comprise high-pressure pump, the surface safety valve (SSV) control loop, described surface safety valve (SSV) control loop comprises stop valve, one way valve, pressure meter, accumulator, four link to each other successively, and between one way valve and pressure meter, overflow valve is set, the stop valve other end connects high-pressure pump, the accumulator other end connects surface safety valve (SSV), it is characterized in that: described stop valve is a high-pressure needle valve, high-pressure pump is pneumatic booster pump, and be connected with the pipeline source of the gas, in described surface safety valve (SSV) control loop, establish a high-pressure needle valve in addition between one way valve and the pressure meter, also be provided with the storm valve control loop between described pneumatic booster pump and the storm valve, this loop comprises high-pressure needle valve, one way valve, pressure meter, accumulator, four link to each other successively, and between the one way valve in this loop and pressure meter, establish a branch in addition, the described branch other end is connected in the surface safety valve (SSV) control loop between the one way valve and pressure meter, this branch is provided with two one way valves, is connected with a high-pressure needle valve between described two one way valves; Described surface safety valve (SSV) control loop also is provided with a high-low pressure control loop, comprise two Pneumatic valves, be connected in the surface safety valve (SSV) control loop between the one way valve and pressure meter, also comprise a high pressure guide shut-off valve and a low pressure guide shut-off valve, both ends are connected respectively with two Pneumatic valves, between pneumatic booster pump and pipeline source of the gas, be provided with a reducing valve and pressure meter, the pipeline source of the gas is connected to pneumatic booster pump as driving source of the gas after reducing pressure, other has a source of the gas branch road as control source of the gas elder generation and height, low pressure guide's shut-off valve links to each other respectively, be connected to two Pneumatic valves more respectively, the pipeline source of the gas is with high, low pressure guide's shut-off valve connects, and described pipeline source of the gas is provided with pressure meter; Described well head safe control valve device also comprises the urgent closing well loop that is connected to form by Pneumatic valve and three way cock.
2. well head safe control valve device as claimed in claim 1, it is characterized in that: between described surface safety valve (SSV) control loop and the storm valve control loop in the branch pipeline between two one way valves be connected with described Pneumatic valve, described three way cock one end links to each other with the control source of the gas, and the other end links to each other with described Pneumatic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100891736A CN100425797C (en) | 2005-08-05 | 2005-08-05 | Control system of well mouth release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100891736A CN100425797C (en) | 2005-08-05 | 2005-08-05 | Control system of well mouth release valve |
Publications (2)
| Publication Number | Publication Date |
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| CN1908365A CN1908365A (en) | 2007-02-07 |
| CN100425797C true CN100425797C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100891736A Active CN100425797C (en) | 2005-08-05 | 2005-08-05 | Control system of well mouth release valve |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8870233B2 (en) | 2007-07-03 | 2014-10-28 | S.P.M. Flow Control, Inc. | Swivel joint with uniform ball bearing requirements |
| CN101709630B (en) * | 2009-11-30 | 2012-11-07 | 四川华宇石油钻采装备有限公司 | Integrated control module for safe shutdown system of wellhead |
| CN101781978B (en) * | 2009-11-30 | 2012-08-29 | 四川华宇石油钻采装备有限公司 | Integrated control system for safety block valve |
| NO332487B1 (en) * | 2011-02-02 | 2012-10-01 | Subsea Solutions As | Method and apparatus for extending at least one valve thread or umbilical cord life |
| US9273543B2 (en) * | 2012-08-17 | 2016-03-01 | S.P.M. Flow Control, Inc. | Automated relief valve control system and method |
| CN103148245B (en) * | 2013-03-12 | 2015-05-20 | 四川广汉阀门厂 | Multifunctional electric control pressure release device, as well as electric control system and electric control method thereof |
| CA2916699A1 (en) | 2013-07-01 | 2015-01-08 | S.P.M. Flow Control, Inc. | Manifold assembly |
| CN104196483B (en) * | 2014-08-26 | 2017-01-11 | 乐山倍创机械制造有限公司 | Pneumatic wellhead shut-off device |
| CN107850243A (en) | 2015-06-15 | 2018-03-27 | S.P.M.流量控制股份有限公司 | Full root radius screw thread wing nut with increase wall thickness |
| US10677365B2 (en) | 2015-09-04 | 2020-06-09 | S.P.M. Flow Control, Inc. | Pressure relief valve assembly and methods |
| CN108561101B (en) * | 2018-01-10 | 2021-06-15 | 中国海洋石油集团有限公司 | Intelligent well completion device controlled in remote closed-loop pilot mode |
| CN112815231B (en) * | 2019-11-17 | 2022-04-29 | 中石化石油工程技术服务有限公司 | Liquid-gas pressurization system |
| CN112729724A (en) * | 2020-12-30 | 2021-04-30 | 深圳市弗赛特科技股份有限公司 | Overflow valve calibration stand |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372202A (en) * | 1992-08-28 | 1994-12-13 | Dallas; Murray | Wellhead isolation tool and method of use |
| US6666266B2 (en) * | 2002-05-03 | 2003-12-23 | Halliburton Energy Services, Inc. | Screw-driven wellhead isolation tool |
| CN2674093Y (en) * | 2004-02-13 | 2005-01-26 | 包林森 | Assembled large-stroke double-cylinder double-telescopic single hydraulic prop |
| CN2816344Y (en) * | 2005-08-05 | 2006-09-13 | 何建辉 | Well mouth safety valve control device |
-
2005
- 2005-08-05 CN CNB2005100891736A patent/CN100425797C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372202A (en) * | 1992-08-28 | 1994-12-13 | Dallas; Murray | Wellhead isolation tool and method of use |
| US6666266B2 (en) * | 2002-05-03 | 2003-12-23 | Halliburton Energy Services, Inc. | Screw-driven wellhead isolation tool |
| CN2674093Y (en) * | 2004-02-13 | 2005-01-26 | 包林森 | Assembled large-stroke double-cylinder double-telescopic single hydraulic prop |
| CN2816344Y (en) * | 2005-08-05 | 2006-09-13 | 何建辉 | Well mouth safety valve control device |
Also Published As
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| CN1908365A (en) | 2007-02-07 |
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Owner name: SHENZHEN FOSITE TESTING EQUIPMENT CO., LTD. Free format text: FORMER OWNER: HE JIANHUI Effective date: 20100108 |
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Effective date of registration: 20100108 Address after: West Coast Building, Nanshan District commercial and cultural center, Shenzhen, 2010 Patentee after: Shenzhen Fluid Science & Technology Co., Ltd. Address before: No. 8, steel road, Zhang Wan Town, Hubei, Xiangyang Patentee before: He Jianhui |
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Address after: 518106, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Patentee after: Shenzhen, Dorset, Polytron Technologies Inc Address before: 518106, West Coast Building, Nanshan District commercial and cultural center, Shenzhen, 2010 Patentee before: Shenzhen Fluid Science & Technology Co., Ltd. |