CN202391383U - Multistage pressure control system for wellhead safety valve - Google Patents

Multistage pressure control system for wellhead safety valve Download PDF

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Publication number
CN202391383U
CN202391383U CN2011204945115U CN201120494511U CN202391383U CN 202391383 U CN202391383 U CN 202391383U CN 2011204945115 U CN2011204945115 U CN 2011204945115U CN 201120494511 U CN201120494511 U CN 201120494511U CN 202391383 U CN202391383 U CN 202391383U
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CN
China
Prior art keywords
valve
pressure
safety valve
control loop
ssv
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 - Lifetime
Application number
CN2011204945115U
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Chinese (zh)
Inventor
刘仲刚
蒋兴
常云海
杨易萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING XINTAI BIAOCHUAN INSTRUMENT Co Ltd
Original Assignee
CHONGQING XINTAI BIAOCHUAN INSTRUMENT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHONGQING XINTAI BIAOCHUAN INSTRUMENT Co Ltd filed Critical CHONGQING XINTAI BIAOCHUAN INSTRUMENT Co Ltd
Priority to CN2011204945115U priority Critical patent/CN202391383U/en
Application granted granted Critical
Publication of CN202391383U publication Critical patent/CN202391383U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a multistage pressure control system for a wellhead safety valve. The multistage pressure control system comprises a medium-pressure pump (1), a ground safety valve (4) and a ground safety valve control loop arranged between the medium-pressure pump (1) and the ground safety valve (4); the ground safety valve control loop comprises a one-way valve (21), an energy storing device (22) and a medium-pressure oil gauge (23) which are sequentially connected; the other end of the medium-pressure pump (1) is connected with an air source; an underground safety valve control loop is arranged between the one-way valve (21) and the energy storing device (22) and comprises a stop valve (31), a pipeline hydraulic supercharger (32), a one-way valve (33) and a high-pressure oil gauge (34); and the other end of the high-pressure oil gauge (34) is connected with an underground safety valve (5). Compared with a traditional wellhead safety valve, the control system disclosed by the utility model has the characteristics that the pipeline hydraulic supercharger is adopted, so that the system is reliable and stable in work; and one high-pressure pump is reduced, so that the structure is more compact.

Description

Well mouth release valve multistage pressure control system
Technical field
The utility model is applicable to petroleum gas drilling industry, is used for the integrated control system of SSV (about controlled pressure 6-30Mpa) and storm valve (about controlled pressure 70-140Mpa).
Background technology
In the well mouth release valve multistage pressure control system of petroleum gas drilling industry, need the controlled pressure about 6-30Mpa be provided to SSV, to storm valve the controlled pressure about 70-140Mpa is provided.The well mouth release valve multistage pressure control system that is adopted at present, as shown in Figure 2, mainly comprise medium lift pump 1, manual pump 8 and high-pressure pump 9, SSV control loop and storm valve control loop.Medium lift pump 1 is air driven pump with high-pressure pump 9, links to each other with source of the gas.The SSV control loop comprises one way valve 21, accumulator 22 and middle pressure oil meter 23; The three links to each other successively; The other end of one way valve 21 connects medium lift pump 1, and the other end of middle pressure oil meter 23 links to each other with SSV 4, and medium lift pump 1 provides suitable controlled pressure for SSV 4.The storm valve control loop comprises one way valve 33 and high pressure oil meter 34, and the other end of one way valve 33 connects high-pressure pump 9, and the other end of high pressure oil meter 34 links to each other with storm valve 5, and high-pressure pump 9 provides suitable controlled pressure for storm valve 5.Between medium lift pump 1 and source of the gas, be provided with air pressure regulator 6 and air gauge 7, between high-pressure pump 9 and source of the gas, also be provided with air pressure regulator 6 and air gauge 7.Medium lift pump 1, manual pump 8 and high-pressure pump 9 threes parallel connection; In addition; Be provided with the oil return branch that links to each other with fuel tank 10 between the accumulator 22 of SSV control loop and the middle pressure oil meter 23, be provided with another oil return branch and this oil return branch that link to each other with fuel tank 10 between the high pressure oil meter 34 of storm valve control loop and the storm valve 5 and be provided with overflow valve 11.
Traditional well mouth release valve multistage pressure control system needs two air driven pumps to be respectively SSV and storm valve provides different output pressure.Because the compressibility of gas, in the process of opening storm valve, along with the compression of driver spring, the back pressure that high-pressure pump receives increases, and the pump oil mass of every stroke reduces gradually, and the process that drives a well is steady inadequately.And gas is influenced by temperature, humidity etc., can make the reliability of high-pressure pump work have more uncertain factor.To produce more noise and vibrations when starting high-pressure pump, and the high-pressure system of using a cover pneumatic high-voltage pump to drive needs very big space.
The utility model content
The purpose of the utility model provides that a kind of fuel feeding process is steady, and pressure oscillation is little, and compact conformation shakes little well mouth release valve multistage pressure control system.
For achieving the above object; The well mouth release valve multistage pressure control system that the utility model provides; Comprise medium lift pump (1), SSV (4) and be arranged on medium lift pump (1) and SSV (4) between the SSV control loop; Said SSV control loop comprises one way valve (21), accumulator (22) and middle pressure oil meter (23); The three links to each other successively; The other end of said medium lift pump (1) is connected with source of the gas, between medium lift pump (1) and source of the gas, is provided with air pressure regulator (6) and air gauge (7), and key is: be provided with the storm valve control loop between said one way valve (21) and the accumulator (22); Said storm valve control loop comprises stop valve (31), hydraulic pressure of pipe line booster (32), one way valve (33) and high pressure oil meter (34), and the other end of high pressure oil meter (34) links to each other with storm valve (5).
Thereby the utility model utilizes the existing middle hydraulic fluid pressing system that accumulator has voltage stabilizing function that has, Drive with a branch roadA hydraulic pressure of pipe line booster of specifying output pressure provides power and medium by existing hydraulic system, and when storm valve need be opened, the hydraulic pressure of pipe line booster started, and supplies with the hydraulic oil of specified pressure reposefully to storm valve.
Its beneficial effect is:
1) course of work is reliable, steadily;
2) noise and vibrations have been reduced;
3) compact conformation, volume exclusion is little.
Description of drawings
Fig. 1 is the sketch map of the utility model.
Fig. 2 is traditional well mouth release valve multistage pressure control system schematic.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Well mouth release valve multistage pressure control system as shown in Figure 1 comprises medium lift pump 1, SSV 4 and SSV control loop, and the SSV control loop is arranged between medium lift pump 1 and the SSV 4.The SSV control loop comprises one way valve 21, accumulator 22 and middle pressure oil meter 23, and the three links to each other successively, and the other end of one way valve 21 connects medium lift pump 1; The middle other end of oil meter 23 of pressing links to each other with SSV 4; The other end of medium lift pump 1 is connected with source of the gas, and medium lift pump 1 is an air driven pump, between medium lift pump 1 and source of the gas, is provided with air pressure regulator 6 and air gauge 7; Source of the gas is connected to medium lift pump 1 as driving, and medium lift pump 1 provides suitable controlled pressure for SSV 4.
Be provided with the storm valve control loop between one way valve 21 and the accumulator 22; The storm valve control loop comprises stop valve 31, hydraulic pressure of pipe line booster 32, one way valve 33 and high pressure oil meter 34; The other end of high pressure oil meter 34 links to each other with storm valve 5; Accumulator 22 provides stable oil pressure for hydraulic pressure of pipe line booster 32, by the road after the pressurization of hydraulic intensifier 32, for storm valve 5 provides suitable controlled pressure.
Manual pump 8 is parallelly connected with medium lift pump 1, and under the situation that medium lift pump 1 breaks down, manual-operated emergent uses.
This control system compares traditional well mouth release valve multistage pressure control system, has reduced by an air driven pump, and has adopted a rational supercharging device, make the stable working, reliable of system, and structure is more compact.
In addition; Be provided with the oil return branch that links to each other with fuel tank 10 between the accumulator 22 of SSV control loop and the middle pressure oil meter 23, be provided with another oil return branch and this oil return branch that link to each other with fuel tank 10 between the high pressure oil meter 34 of storm valve control loop and the storm valve 5 and be provided with overflow valve 11.When the oil pressure of storm valve control loop was excessive, overflow valve 11 will be opened, and was the release of storm valve control loop.

Claims (2)

1. a well mouth release valve multistage pressure is controlled system; Comprise medium lift pump (1), SSV (4) and be arranged on medium lift pump (1) and SSV (4) between the SSV control loop; Said SSV control loop comprises one way valve (21), accumulator (22) and middle pressure oil meter (23); The three links to each other successively; The other end of said medium lift pump (1) is connected with source of the gas; Between medium lift pump (1) and source of the gas, be provided with air pressure regulator (6) and air gauge (7); It is characterized in that: be provided with the storm valve control loop between said one way valve (21) and the accumulator (22), said storm valve control loop comprises stop valve (31), hydraulic pressure of pipe line booster (32), one way valve (33) and high pressure oil meter (34), and the other end of high pressure oil meter (34) links to each other with storm valve (5).
2. according to the described well mouth release valve multistage pressure control of claim 1 system; It is characterized in that: be provided with the oil return branch that links to each other with fuel tank (10) between said accumulator (22) and the middle pressure oil meter (23), be provided with another oil return branch and this oil return branch that link to each other with fuel tank (10) between high pressure oil meter (34) and the storm valve (5) and be provided with overflow valve (11).
CN2011204945115U 2011-12-02 2011-12-02 Multistage pressure control system for wellhead safety valve Expired - Lifetime CN202391383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204945115U CN202391383U (en) 2011-12-02 2011-12-02 Multistage pressure control system for wellhead safety valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204945115U CN202391383U (en) 2011-12-02 2011-12-02 Multistage pressure control system for wellhead safety valve

Publications (1)

Publication Number Publication Date
CN202391383U true CN202391383U (en) 2012-08-22

Family

ID=46666314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204945115U Expired - Lifetime CN202391383U (en) 2011-12-02 2011-12-02 Multistage pressure control system for wellhead safety valve

Country Status (1)

Country Link
CN (1) CN202391383U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851037A (en) * 2012-11-29 2014-06-11 何荣志 Multi-pressure source energy-saving hydraulic pressure station
CN106285561A (en) * 2015-05-15 2017-01-04 中国石油天然气股份有限公司 Downhole safety valve system
CN108061073A (en) * 2017-12-19 2018-05-22 宁波文泽机电技术开发有限公司 Pressure-control valve and the hydraulic system including the pressure-control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851037A (en) * 2012-11-29 2014-06-11 何荣志 Multi-pressure source energy-saving hydraulic pressure station
CN106285561A (en) * 2015-05-15 2017-01-04 中国石油天然气股份有限公司 Downhole safety valve system
CN106285561B (en) * 2015-05-15 2019-05-07 中国石油天然气股份有限公司 Downhole safety valve system
CN108061073A (en) * 2017-12-19 2018-05-22 宁波文泽机电技术开发有限公司 Pressure-control valve and the hydraulic system including the pressure-control valve

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Granted publication date: 20120822