CN202731842U - Retrievable injection valve for injecting chemical agent - Google Patents
Retrievable injection valve for injecting chemical agent Download PDFInfo
- Publication number
- CN202731842U CN202731842U CN 201220258217 CN201220258217U CN202731842U CN 202731842 U CN202731842 U CN 202731842U CN 201220258217 CN201220258217 CN 201220258217 CN 201220258217 U CN201220258217 U CN 201220258217U CN 202731842 U CN202731842 U CN 202731842U
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- Prior art keywords
- valve
- ball
- seat
- chemical agent
- assembly
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 239000013043 chemical agent Substances 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
A formula of can throwing and dragging injection valve for injecting into chemical agent is applied to gas lift oil recovery. Is characterized in that: an annular upper sealing assembly is fixed on the outer wall of the upper joint; the lower end of the upper joint is connected with a cylindrical valve sleeve; the lower end of the valve sleeve is connected with the lower valve body; a circular valve seat is arranged in the valve sleeve and at the lower part of the liquid inlet hole; an inner check valve assembly is arranged at the lower part of the valve seat; the inner check valve assembly is arranged inside the inner check valve sleeve; the inner check valve is sleeved in the central holes of the valve sleeve and the inner check valve sleeve; the outer wall of the lower valve body is sleeved with a lower sealing component; the lower end of the lower valve body is connected with an outer check valve assembly; the lower end of the valve cylinder is connected with a plug in a threaded manner, and the plug is provided with an axial hole. The effect is as follows: the completion that can be fine is to injecting into chemical agent in the oil pipe, after chemical agent from the ground pump income injection line in reaching the working barrel, gets into oil pipe through the filling valve through the feed liquor hole on the working barrel cavity, plays the effect that prevents oil pipe corrosion, wax precipitation, salt precipitation and scale deposit.
Description
Technical field
The utility model relates to the oil extraction in oil field technical field, being particularly related to and a kind of the cooperation injecting the down-hole special tool that seating nipple injects chemical agent, is a kind of dropping in and taking off type chemical agent injection valve that can prevent to injection chemical agent in the well tube corrosion, wax deposition, salt crust and fouling.
Background technology
At present, directly or intermittently injection chemical agent continuous from the oil pipe well head prevents that the work measure of burn into wax deposition, salt crust and fouling is widely used in the oil gas field production.But the shortcoming of this kind injection method has: 1, to the having relatively high expectations of pump, complicated operation, take more human and material resources, and easily cause and add chemical agent and mix the drawbacks such as uneven, that reagent consumption is large, workload is large; 2, the sectional area of oil pipe is much larger than the area that injects pipeline, and this just needs more powerful pump to the chemical agent that injects identical mine shaft depth place, strengthens cost of investment, increases energy consumption, has affected development effectiveness and the returns of investment in oil field; 3, direct injection belongs to general injection, can not accomplish targetedly a certain section of pit shaft to be protected, and more can not realize multistage injection, and action effect is unstable.
The utility model content
The purpose of this utility model is: provide a kind of for injecting chemical agent dropping in and taking off type injection valve, the fiting chemical agent is injected seating nipple and is injected pipeline and jointly use, and is used for injecting chemical agent and prevents tube corrosion, wax deposition, salt crust and fouling.
The technical solution adopted in the utility model is: be used for injecting chemical agent dropping in and taking off type injection valve, mainly be comprised of top connection, upper black box, valve pocket, inlet opening, valve seat, interior ball-and-seat assembly, lower valve body, interior single current valve pocket, lower seal assembly, outer ball-and-seat assembly.It is characterized in that: top connection is solid cylinder, and there is external screw thread the upper end of top connection, can connect the pulling special tool; The outer wall of top connection is fixed with the upper black box of annular; The lower end of top connection connects columnar valve pocket; The lower end of valve pocket connects lower valve body; Horizontal inlet opening is arranged on the valve pocket; In valve pocket and the valve seat of annular is arranged in the bottom of inlet opening, valve seat has centre bore; In the bottom of valve seat interior ball-and-seat assembly is arranged, interior ball-and-seat assembly is comprised of valve ball, valve holder and Compress Spring, and valve ball has the valve holder in the bottom of valve base center hole between the valve ball Compress Spring; Interior ball-and-seat assembly is in the inside of interior single current valve pocket; Interior ball-and-seat is enclosed within the centre bore of valve pocket and interior single current valve pocket; Outer wall cover at lower valve body has the lower seal assembly; There is external screw thread the lower end of lower valve body, is connected with ball-and-seat assembly outside in the lower end of lower valve body; Outer ball-and-seat assembly is comprised of valve cylinder, spool, Compress Spring, and valve cylinder is connected to the lower end of lower valve body, and the upper sealing surface of spool and the sealing of the lower surface of lower valve body have Compress Spring in the bottom of spool; Screw thread is connected with plug in the lower end of valve cylinder, and plug has axial hole.
Upper black box and lower seal assembly are comprised of v-seal packing and center support ring that eight oil resistant glue are made respectively, and the v-seal packing that per four oil resistant glue are made is one group, are installed on respectively up and down two ends of center support ring.
Be used for injecting the operating principle of chemical agent dropping in and taking off type injection valve: consult Fig. 1.Seating nipple is injected in the preset chemical agent in tubing string, and injection valve is knocked down tubing string and arrived the precalculated position.Upper black box 2 and lower seal assembly 9 can and inject between seating nipple and carry out good sealing injection valve.The inside and outside ball-and-seat assembly of chemical agent from be installed on valve pocket flowed in the oil pipe, play the effect that prevents tube corrosion, wax deposition, salt crust and fouling.After upper black box 2 and lower seal assembly 9 guarantee that the chemical agent that injects enters valve pocket 3 from inlet opening 4, under the effect of pressure, can only enter into oil pipe from interior ball-and-seat assembly 6 and outer ball-and-seat assembly 10.And the external screw thread of top connection 1 upper end can connect the pulling special tool, in the situation that does not play flowline injection valve is changed and is keeped in repair.
The beneficial effects of the utility model: the utility model is used for injecting the dropping in and taking off type injection valve of chemical agent, can be good at finishing in oil pipe and inject chemical agent, when chemical agent pump into from ground the ascending pipe line arrive seating nipple after, enter oil pipe by the inlet opening on the seating nipple cavity through injection valve, play the effect that prevents tube corrosion, wax deposition, salt crust and fouling.Have operating process simple, can reach darker shaft location, position and select more accurately, add the advantages such as chemical agent mixes fully and action effect is very stable.And injection valve can use whipstock connection drop-in tool or fishing-out tool to cooperate fishing head to change and keep in repair injection valve by steel wire operation in the situation that does not play flow string, has not only shortened the time of operation but also saved cost of production.
Description of drawings
Fig. 1 is that the utility model is used to inject chemical agent dropping in and taking off type injection valve structural profile schematic diagram.
Among the figure, 1 top connection, the upper black box of 2-, 3-valve pocket, 4-inlet opening, ball-and-seat assembly in the 5-valve seat, 6-, single current valve pocket in the valve body under the 7-, 8-, 9-lower seal assembly, the outer ball-and-seat assembly of 10-, 11-plug.
The specific embodiment
Embodiment 1: the dropping in and taking off type injection valve that is used for the chemical agent injection take an external diameter as 25.4 millimeters specifications is elaborated as example.
Consult Fig. 1.The utility model is used for injecting chemical agent dropping in and taking off type injection valve, mainly is comprised of top connection 1, upper black box 2, valve pocket 3, inlet opening 4, valve seat 5, interior ball-and-seat assembly 6, lower valve body 7, interior single current valve pocket 8, lower seal assembly 9, outer ball-and-seat assembly 10.The external diameter of top connection 1, valve pocket 3 and lower valve body 7 all is 25.4 millimeters.
Top connection 1 is solid cylinder, and there is external screw thread the upper end of top connection 1, can connect the pulling special tool; The outer wall of top connection 1 is fixed with the upper black box 2 of annular.The lower end of top connection 1 connects a columnar valve pocket 3.The lower end of valve pocket 3 connects lower valve body 7.The inlet opening 4 that four horizontal diameters are arranged on valve pocket 3 walls is 6mm.In valve pocket 3 and the valve seat 5 of annular is arranged in the bottom of inlet opening 4, valve seat 5 has centre bore.Interior ball-and-seat assembly 6 is arranged in the bottom of valve seat 5, and described interior ball-and-seat assembly 6 is comprised of valve ball, valve holder and Compress Spring, and valve ball has the valve holder in the bottom of valve seat 5 centre bores between the valve ball Compress Spring.Interior ball-and-seat assembly 6 is in the inside of interior single current valve pocket 8.Interior single current valve pocket 8 is in the centre bore of valve pocket 3 and interior single current valve pocket 8.Outer wall cover at lower valve body 7 has lower seal assembly 9.There is external screw thread the lower end of lower valve body 7, is connected with ball-and-seat assembly 10 outside in the lower end of lower valve body 7.Outer ball-and-seat assembly 10 is comprised of valve cylinder, spool, Compress Spring, and valve cylinder is connected to the lower end of lower valve body 7, and the upper sealing surface of spool and the sealing of the lower surface of lower valve body 7 have Compress Spring in the bottom of spool.Screw thread is connected with plug 11 in the lower end of valve cylinder, and plug 11 has axial hole.Upper black box 2 and lower seal assembly 9 are comprised of v-seal packing and center support ring that eight oil resistant glue are made respectively, and the v-seal packing that per four oil resistant glue are made is one group, are installed on respectively up and down two ends of center support ring.
The wire Launching and Bailing operation process is used in summary: in the operation process, need to carry out the pulling operation with steel wire at the scene.
1, launch process: a. installs and to have matched the chemical agent injection valve, and connects with fishing head, makeup valve drop-in tool then, on connect whipstock, knuckle, bumper jar, weighted lever and rope socket.B. transfer tool string, carry and the throw string on arrive injecting behind the fitting depth, along the guide rail in the seating nipple whipstock is located, on carry the tool string deflecting, make injection valve aim at the valve bag.C. transfer tool string injection valve is dropped into the valve bag, jarring makes drop-in tool unclamp fishing head, on carry tool string and slip out of the hand.D. tripping out tool string gets final product.
2, salvaging process: connect whipstock, knuckle, bumper jar, weighted lever and rope socket on a. fishing tool.B. transfer tool string, carry and the throw string on arriving behind the injection valve fitting depth, along the guide rail in the seating nipple whipstock is located, on carry the tool string deflecting, make fishing tool aim at the valve bag.C. transfer tool string, make fishing tool catch fishing head, upwards jarring is pulled out the valve bag with injection valve.D. trip out tool string.
Claims (2)
1. a dropping in and taking off type injection valve that is used for injecting chemical agent mainly is comprised of top connection (1), upper black box (2), valve pocket (3), inlet opening (4), valve seat (5), interior ball-and-seat assembly (6), lower valve body (7), interior single current valve pocket (8), lower seal assembly (9), outer ball-and-seat assembly (10); It is characterized in that: top connection (1) is solid cylinder, and there is external screw thread the upper end of top connection (1); The outer wall of top connection (1) is fixed with the upper black box (2) of annular; The lower end of top connection (1) connects columnar valve pocket (3); The lower end of valve pocket (3) connects lower valve body (7); Horizontal inlet opening (4) is arranged on the valve pocket (3); In valve pocket (3) and the valve seat (5) of annular is arranged in the bottom of inlet opening (4), valve seat (5) has centre bore; In the bottom of valve seat (5) interior ball-and-seat assembly (6) is arranged, interior ball-and-seat assembly (6) is comprised of valve ball, valve holder and Compress Spring, and valve ball has the valve holder in the bottom of valve seat (5) centre bore between the valve ball Compress Spring; Interior ball-and-seat assembly (6) is in the inside of interior single current valve pocket (8); Interior single current valve pocket (8) is in the centre bore of valve pocket (3) and interior single current valve pocket (8); Outer wall cover at lower valve body (7) has lower seal assembly (9); There is external screw thread the lower end of lower valve body (7), is connected with ball-and-seat assembly (10) outside in the lower end of lower valve body (7); Outer ball-and-seat assembly (10) is comprised of valve cylinder, spool, Compress Spring, and valve cylinder is connected to the lower end of lower valve body (7), and the lower surface sealing of the upper sealing surface of spool and lower valve body (7) has Compress Spring in the bottom of spool; Be connected with plug (11) at the lower end of valve cylinder screw thread, plug (11) has axial hole.
2. the dropping in and taking off type injection valve for injecting chemical agent according to claim 1, it is characterized in that: upper black box (2) and lower seal assembly (9) are comprised of v-seal packing and center support ring that eight oil resistant glue are made respectively, the v-seal packing that per four oil resistant glue are made is one group, is installed on respectively up and down two ends of center support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220258217 CN202731842U (en) | 2012-06-01 | 2012-06-01 | Retrievable injection valve for injecting chemical agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220258217 CN202731842U (en) | 2012-06-01 | 2012-06-01 | Retrievable injection valve for injecting chemical agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731842U true CN202731842U (en) | 2013-02-13 |
Family
ID=47657554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220258217 Expired - Fee Related CN202731842U (en) | 2012-06-01 | 2012-06-01 | Retrievable injection valve for injecting chemical agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427390A (en) * | 2020-09-02 | 2022-05-03 | 中国石油化工股份有限公司 | Salt-removing and salt-preventing injection-production integrated pipe column |
-
2012
- 2012-06-01 CN CN 201220258217 patent/CN202731842U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427390A (en) * | 2020-09-02 | 2022-05-03 | 中国石油化工股份有限公司 | Salt-removing and salt-preventing injection-production integrated pipe column |
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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: 20130213 Termination date: 20210601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |