CN204804767U - Can throw formula of dragging for high -pressure gas injection valve - Google Patents

Can throw formula of dragging for high -pressure gas injection valve Download PDF

Info

Publication number
CN204804767U
CN204804767U CN201520281381.5U CN201520281381U CN204804767U CN 204804767 U CN204804767 U CN 204804767U CN 201520281381 U CN201520281381 U CN 201520281381U CN 204804767 U CN204804767 U CN 204804767U
Authority
CN
China
Prior art keywords
valve
seat
described valve
gas injection
seat cover
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.)
Active
Application number
CN201520281381.5U
Other languages
Chinese (zh)
Inventor
王良
马龙
何明华
唐胜菊
韩中轩
李国栋
曹元平
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.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas 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
Priority to CN201420246727 priority Critical
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201520281381.5U priority patent/CN204804767U/en
Application granted granted Critical
Publication of CN204804767U publication Critical patent/CN204804767U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a can throw formula of dragging for high -pressure gas injection valve. The lower extreme of valve head becomes the undergauge structure, has the venthole on the undergauge, and the quantity of venthole is 4, and the venthole diameter is 8 millimeters, and venthole evenly distributed, there are air cock, air cock and valve body formation inside seal at the internally mounted of valve body, connect the disk seat seat cover below the valve body, install single current valve assembly in the disk seat seat cover, spring, single current valve valve head, support ring, seal component single current valve assembly, externally mounted lower seal group, there are 2 inlet ports on the valve nose, valve head, valve body, disk seat seat cover and valve nose adopt threaded connection, per 4 a set of relative installations maybe be constituteed by sealed packing by the V -arrangement that 8 resistant factices were made to upper seal group and lower seal component, upper seal group and lower seal component are do not fixed at the surface of valve head and the surface of disk seat seat cover. The utility model discloses with special fishing head hookup back, realize allotment of the motionless tubular column volume of carrying out the gas injection of high -pressure gas injection well and troubleshooting.

Description

A kind of dropping in and taking off type high-pressure gas injection valve
Technical field
The utility model relates to a kind of dropping in and taking off type high-pressure gas injection valve, belongs to high pressure layered gas-injection technical field.
Background technology
Improving recovery ratio research is one of eternal theme of oil-gas field development.In China, low-permeability oil deposit aboundresources, the ratio shared in added reserves of its reserves increases gradually, more and more comes into one's own for the research and development of low Permeability reservoir for improving recovery factor technology and application.Eor By Gas Injection pilot experiments has also been carried out in succession in each oil field, by High Pressure Gas Injection Pipe, CO2, natural gas, high-temperature steam etc. is injected into stratum, drives more crude oil to flow out from stratum.External gas injection technology string matching instrument relative maturity, gas injection tool forms seriation, meets various gas injection technology tubing string demand, and pressure-bearing, gas sealing ability are reliable, but there is the series of problems such as high cost, later maintenance difficulty.
Current domestic gas injection technology tubing string bearing capacity is low, is mainly used in low pressure gas injection field, but along with the exploitation of each oil field LOW PERMEABILITY RESERVOIR, due to hypotonic feature, stratum gettering ability is more weak, needs to improve gas injection pressure, therefore carries out High Pressure Gas Injection Pipe research and seems particularly important.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of dropping in and taking off type high-pressure gas injection valve.
A kind of dropping in and taking off type high-pressure gas injection valve, the lower end of valve head becomes undergauge structure, and undergauge has venthole, and the quantity of venthole is 4, and venthole diameter is 8 millimeters, and venthole is uniformly distributed; Be provided with valve in the inside of valve body, valve and valve body form interior sealing; Connecting valve seat cover for seat below valve body, is provided with ball-and-seat assembly in valve seat cover for seat, spring, ball-and-seat valve head, support ring, seal composition ball-and-seat assembly, outside installation lower seal group; Valve nose has 2 air inlets, air inlet diameter is 8 millimeters; Valve head, valve body, valve seat cover for seat and valve nose adopt and are threaded; The v-seal packing that upper seal group and lower seal group are made up of 8 resistance to factices respectively forms, and every 4 one group is mounted opposite; Upper seal group and lower seal group are separately fixed at the external surface of valve head and the external surface of valve seat cover for seat; The inner chamber linking springs of valve seat cover for seat, ball-and-seat valve head, support ring, seal, be connected the 2nd O type circle between valve seat cover for seat with valve nose, an O type circle is connected between valve and valve body, and packing ring is connected between the end face of valve and valve seat cover for seat.
The external diameter of valve head, valve body, valve seat cover for seat and valve nose is all 25.4 millimeters; Be 20 millimeters at the diameter shrinkage part external diameter of valve head, the external diameter of upper seal group and lower seal group is 26.4 millimeters; External screw thread is had in the upper end of valve head and valve seat cover for seat.
A kind of dropping in and taking off type high-pressure gas injection valve, the lower end of valve head becomes undergauge structure, and undergauge has venthole; Be provided with valve in the inside of valve body, valve and valve body form interior sealing; Connecting valve seat cover for seat below valve body, is provided with ball-and-seat assembly in valve seat cover for seat; Valve nose there is air inlet; The v-seal packing that upper seal group and lower seal group are made up of 8 resistance to factices respectively forms; Upper seal group and lower seal group are separately fixed at the external surface of valve head and the external surface of valve seat cover for seat; The inner chamber linking springs of valve seat cover for seat, ball-and-seat valve head, support ring, seal, be connected the 2nd O type circle between valve seat cover for seat with valve nose, an O type circle is connected between valve and valve body, and packing ring is connected between the end face of valve and valve seat cover for seat.
Further, the quantity of venthole is 4, and venthole diameter is 8 millimeters, and venthole is uniformly distributed.
Further, ball-and-seat assembly comprises: spring, ball-and-seat valve head, support ring and seal, outside installation lower seal group.
Further, air inlet has 2, and air inlet diameter is 8 millimeters; Valve head, valve body, valve seat cover for seat and valve nose adopt and are threaded.
Further, 8 resistance to factices, every 4 one group is mounted opposite.
The utility model is arranged in the high-pressure gas injection seating nipple on high-pressure gas injection well casing post, is used for the gas injection rate size of regulable control gas injection well; After the utility model connects with special fishing head, can according to production requirement, rendered in gas injection seating nipple or by gas injection valve by the mode of wire Launching and Bailing and pull out from seating nipple, the valve more renewing valve or adjust suitable size just can realize gas injection well fixed tubular column and carry out failture evacuation and gas injection rate allotment.
The beneficial effects of the utility model: by designing a seal structures at valve external surface, formed with valve body inner surface and seal, together with increasing between valve with valve seat cover for seat, O type circle makes injecting gas can only flow through from valve, supporting ball-and-seat adopts affixed vulcanized rubber structure, the entire compression ability of gas injection valve is made to bring up to 50MPa, meet the requirement of high-pressure gas injection operation field construction, efficiently solve the difficult problem that High Pressure Gas Injection Pipe holds high pressure.
The utility model has the advantages that breaching gas injection tube column in the past can only realize low pressure gas injection, and the unmanageable difficult problem of gas injection rate, greatly expand the application of gas injection development.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the utility model better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Detailed description of the invention
Obviously, those skilled in the art belong to protection domain of the present utility model based on the many modifications and variations that aim of the present utility model is done.
Embodiment 1: as shown in Figure 1, a kind of dropping in and taking off type high-pressure gas injection valve, the lower end of valve head 2 becomes undergauge structure, and undergauge has venthole, and the quantity of venthole is 4, and venthole diameter is 8 millimeters, and venthole is uniformly distributed; Be provided with valve 5 in the inside of valve body 3, valve 5 and valve body 3 form interior sealing; Valve body 3 is connecting valve seat cover for seat 7 below, is provided with ball-and-seat assembly in valve seat cover for seat 7, outside installation lower seal group 8; Valve nose 14 is designed with 2 air inlets, air inlet diameter is 8 millimeters; Valve head 2, valve body 3, valve seat cover for seat 7 and valve nose 14 adopt and are threaded; The v-seal packing that upper seal group 1 and lower seal group 8 are made up of 8 resistance to factices respectively forms, and every 4 one group is mounted opposite; Upper seal group 1 and lower seal group 8 are separately fixed at the external surface of valve head 2 and the external surface of valve seat cover for seat 7; Hermetic seal can be formed with the valve bag inner surface of eccentric pulling seating nipple; The inner chamber linking springs 9 of valve seat cover for seat 7, ball-and-seat valve head 10, support ring 11, seal 12, the 2nd O type circle 13 is connected between valve seat cover for seat 7 with valve nose 14, one O type circle 4 is connected between valve 5 and valve body 3, and packing ring 6 is connected between the end face of valve 5 and valve seat cover for seat 7.
The external diameter of valve head 2, valve body 3, valve seat cover for seat 7 and valve nose 14 is all 25.4 millimeters.Have undergauge at the end portion of valve head 2, diameter shrinkage part external diameter is 20 millimeters,
The external diameter of upper seal group 1 and lower seal group 8 is 26.4 millimeters;
External screw thread is had in the upper end of valve head 2 and valve seat cover for seat 7.
Spring 9, ball-and-seat valve head 10, support ring 11, seal 12 form ball-and-seat assembly, and main purpose is the gases at high pressure backflow preventing from injecting, and forms a kind of single flow path.
Between valve head 2 and valve seat cover for seat 7, valve 5 is housed, an O RunddichtringO 4 is equipped with in valve 5 outside, gases at high pressure can only be flowed through valve 5, valve 5 is the critical pieces controlling gas injection rate, adjust gas injection rate by the mouth footpath size designing different valves 5, valve mouth footpath forms seriation, is divided into 2.4,2.8,3.2,4.0,4.8,6.4,8.0 millimeters successively from small to large.
The utility model adopts unique design of Sealing Structure, and valve body and ball-and-seat assembly adopt special process process, and bearing capacity reaches 50MPa, meets the bearing requirements of high-pressure gas injection operation.Owing to adopting dropping in and taking off type design, namely when gas injection valve changed by needs, can when not playing flow string, wire Launching and Bailing operation is adopted to be pulled out in oil well by gas injection valve, more renew gas injection valve, high-pressure gas injection is achieved, greatly extend the application of gas injection development.
Summary uses wire Launching and Bailing operation throw in or salvage process of the present utility model at the scene, is conducive to understanding the utility model.
1, launch process;
A. assemble gas injection valve, and it is connected with fishing head, then makeup valve drop-in tool, above connect whipstock, knuckle, bumper jar, weighted lever and rope socket.
B. transfer tool string, carry tool string on after arriving gas injection valve fitting depth, whipstock is located automatically along the guide rail in seating nipple, makes gas injection valve aim at valve bag.
C. transfer tool string and gas injection valve is dropped into valve bag, jarring makes drop-in tool unclamp fishing head, above carries tool string and slips out of the hand.
D. tool string is tripped out.
2, process is salvaged;
A. fishing tool connects whipstock, knuckle, bumper jar, weighted lever and rope socket.
B. transfer tool string, carry tool string on after arriving gas injection valve fitting depth, whipstock is located automatically along the guide rail in seating nipple, makes fishing tool aim at down-hole gas injection valve.
C. transfer tool string, make fishing tool catch fishing head, upwards jarring, by gas injection valve pull-out valve bag.
D. tool string is tripped out.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (7)

1. a dropping in and taking off type high-pressure gas injection valve, is characterized in that, the lower end of valve head (2) becomes undergauge structure, and undergauge has venthole, and the quantity of venthole is 4, and venthole diameter is 8 millimeters, and venthole is uniformly distributed; In the inside of valve body (3), valve (5) is installed, seals in described valve (5) and described valve body (3) are formed; Described valve body (3) is connecting valve seat cover for seat (7) below, in described valve seat cover for seat (7), ball-and-seat assembly is installed, spring (9), ball-and-seat valve head (10), support ring (11) and seal (12) composition ball-and-seat assembly, outside installation lower seal group (8); Valve nose (14) has 2 air inlets, air inlet diameter is 8 millimeters; Described valve head (2), described valve body (3), described valve seat cover for seat (7) and described valve nose (14) adopt and are threaded; The v-seal packing that upper seal group (1) and described lower seal group (8) are made up of 8 resistance to factices respectively forms, and every 4 one group is mounted opposite; Described upper seal group (1) and described lower seal group (8) are separately fixed at the external surface of described valve head (2) and the external surface of described valve seat cover for seat (7); The inner chamber of described valve seat cover for seat (7) connects described spring (9), described ball-and-seat valve head (10), described support ring (11), described seal (12), the 2nd O type circle (13) is connected between described valve seat cover for seat (7) with described valve nose (14), one O type circle (4) is connected between described valve (5) and described valve body (3), and packing ring (6) is connected between the end face of described valve (5) and described valve seat cover for seat (7).
2. a kind of dropping in and taking off type high-pressure gas injection valve according to claim 1, it is characterized in that, the external diameter of described valve head (2), described valve body (3), described valve seat cover for seat (7) and described valve nose (14) is all 25.4 millimeters; Be 20 millimeters at the diameter shrinkage part external diameter of described valve head (2), the external diameter of described upper seal group (1) and described lower seal group (8) is 26.4 millimeters; External screw thread is had in the upper end of described valve head (2) and described valve seat cover for seat (7).
3. a dropping in and taking off type high-pressure gas injection valve, is characterized in that, the lower end of valve head (2) becomes undergauge structure, and undergauge has venthole; In the inside of valve body (3), valve (5) is installed, seals in described valve (5) and described valve body (3) are formed; Described valve body (3) is connecting valve seat cover for seat (7) below, is provided with ball-and-seat assembly in described valve seat cover for seat (7); (14) have air inlet to valve nose; The v-seal packing that upper seal group (1) and lower seal group (8) are made up of 8 resistance to factices respectively forms; Described upper seal group (1) and described lower seal group (8) are separately fixed at the external surface of described valve head (2) and the external surface of described valve seat cover for seat (7); The inner chamber of described valve seat cover for seat (7) connects described ball-and-seat assembly, the 2nd O type circle (13) is connected between described valve seat cover for seat (7) with described valve nose (14), one O type circle (4) is connected between described valve (5) and described valve body (3), and packing ring (6) is connected between the end face of described valve (5) and described valve seat cover for seat (7).
4. dropping in and taking off type high-pressure gas injection valve according to claim 3, is characterized in that, the quantity of described venthole is 4, and venthole diameter is 8 millimeters, and described venthole is uniformly distributed.
5. dropping in and taking off type high-pressure gas injection valve according to claim 3, it is characterized in that, described ball-and-seat assembly comprises: spring (9), ball-and-seat valve head (10), support ring (11) and seal (12), the described lower seal group (8) of outside installation.
6. dropping in and taking off type high-pressure gas injection valve according to claim 3, it is characterized in that, described air inlet has 2, and air inlet diameter is 8 millimeters; Described valve head (2), described valve body (3), described valve seat cover for seat (7) and described valve nose (14) adopt and are threaded.
7. dropping in and taking off type high-pressure gas injection valve according to claim 3, is characterized in that, described 8 resistance to factices, and every 4 one group is mounted opposite.
CN201520281381.5U 2014-05-14 2015-05-04 Can throw formula of dragging for high -pressure gas injection valve Active CN204804767U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201420246727 2014-05-14
CN201520281381.5U CN204804767U (en) 2014-05-14 2015-05-04 Can throw formula of dragging for high -pressure gas injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520281381.5U CN204804767U (en) 2014-05-14 2015-05-04 Can throw formula of dragging for high -pressure gas injection valve

Publications (1)

Publication Number Publication Date
CN204804767U true CN204804767U (en) 2015-11-25

Family

ID=54589609

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520281381.5U Active CN204804767U (en) 2014-05-14 2015-05-04 Can throw formula of dragging for high -pressure gas injection valve

Country Status (1)

Country Link
CN (1) CN204804767U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756633A (en) * 2016-04-11 2016-07-13 中国石油天然气股份有限公司 Injection-production device
CN109538174A (en) * 2017-09-22 2019-03-29 中国石油天然气股份有限公司 Drive fluid layering method for implanting and driving fluid layering injection string

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756633A (en) * 2016-04-11 2016-07-13 中国石油天然气股份有限公司 Injection-production device
CN105756633B (en) * 2016-04-11 2018-07-13 中国石油天然气股份有限公司 Injection-recovery apparatus
CN109538174A (en) * 2017-09-22 2019-03-29 中国石油天然气股份有限公司 Drive fluid layering method for implanting and driving fluid layering injection string

Similar Documents

Publication Publication Date Title
CN204804767U (en) Can throw formula of dragging for high -pressure gas injection valve
CN204754881U (en) Double -barrelled gas well flow string parallels
CN201214997Y (en) Metal seal double tube christmas tree wellhead device
CN204984329U (en) Built -in coiled tubing hanger
CN202745837U (en) Natural energy circular gas-lift well completion tubular column
CN208587104U (en) A kind of easy coal bed gas well down tube column device
CN201778759U (en) Underground tubing-casing annulus pressure-reducing device
CN201433735Y (en) Packer special for plugging water
CN203383783U (en) Closed-type bottom reversing switch
CN103133340A (en) Gas well automatic liquid drainage plunger
CN201723196U (en) Self-sealing setting ball seat
CN204113206U (en) A kind of Self-expandable packer with compression protection mechanism
CN203879719U (en) Integrated gas injecting and oil extracting pump
CN204357408U (en) Sliding sleeve of bushing closing tool
CN201778733U (en) Hydraulic penetration device between subsea production tree and tubing hanger
CN106837291B (en) Oil jacket annulus gas-liquid separation device in non-conventional gas well head
CN103510921B (en) Have and flow hollow pumping equipment mutually
CN207686691U (en) Tubing string for being layered gas drive
CN202338481U (en) Automatic liquid-discharging plunger of gas well
CN106285580B (en) A kind of underground throttle device
CN204552680U (en) Temperature control type hydraulic packer
CN201474653U (en) Oil well double ball-joint deflection regulating automatic blowout preventer
CN203430480U (en) Blocking ball and seat assembly
CN203239288U (en) High-pressure gas lift valve capable of being thrown and pulled
CN2679359Y (en) Composite well negative pressure sub-commingled prodn pumping unit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant