CN203515468U - Water injection well opening check valve convenient to dismantle - Google Patents
Water injection well opening check valve convenient to dismantle Download PDFInfo
- Publication number
- CN203515468U CN203515468U CN201320642116.6U CN201320642116U CN203515468U CN 203515468 U CN203515468 U CN 203515468U CN 201320642116 U CN201320642116 U CN 201320642116U CN 203515468 U CN203515468 U CN 203515468U
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- valve
- thread
- joint
- connector
- valve seat
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- Expired - Fee Related
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Abstract
Provided is a water injection well opening check valve convenient to dismantle. A valve ball and a valve seat are installed in a valve cover, a thread on the upper portion of a supporting connector is connected with a thread on the lower portion of the valve cover, the upper end face of the valve seat abuts against a shoulder face in the valve cover, the upper end face of the supporting connector abuts against the lower end face of the valve seat, the valve ball is in matched sealing with an upper port of the valve seat, an external thread on the lower portion of the supporting connector is connected with an internal thread on the lower portion of a lateral open connector, an outlet connector is welded to the position of a side hole of the open connector, the valve cover is provided with a communication groove, an annular space is formed by an outer wall of the supporting connector and the lateral open connector, the thread on the upper portion of the supporting connector is positioned above the lateral open connector, a thread on the lower portion of a sealing drum is connected with a thread on the upper portion of the open connector, and the sealing drum covers the valve cover. An annular space is formed between an inner wall of the sealing drum and an outer wall covering the valve cover, the top of the sealing drum is of a sealed structure, formation water does not return to a ground water injection pipeline, valve parts needing overhauling can be exposed outside and are convenient to dismantle, check and replace, and the applicability is good.
Description
Technical field
The utility model relates to the device that water injection well in oil fields well head is used, and is a kind of easy-to-dismount type water injection well mouth check valve.
Background technology
Because the water injection well strata pressure having is high, when water injection well stops noting for some reason, be injected into injected water in stratum and will return and tell in Hui Jing, and with waterflood-transmission line earthward pumping plant reflux, to tell flow in process large returning for water filling layer, flow velocity is fast, and stratum produces exciting, easily reservoir sand is carried out, cause sand to bury water injection string, make it water filling again, stratum water injection rate reduces, and affects well oil output.Due to water filling again, be forced to operation well workover, increase operating cost.After sand card tubing string, during operation well workover, also there will be and can not trip out smoothly tubing string, carry out the heavy repair task of high cost, economic loss is huge.For this reason, developed water injection well mouth check valve, as Chinese patent: 200920021411.3 < < water injection well mouth check valve > >, can make to be injected into injected water in stratum can not return and tell in Hui Jing, but when it is arranged on well head, bottom and right side all will be welded on Well head flow path, in the time of need to overhauling, be not easy to dismantle, maintenance and replacing parts trouble, maintenance and replacing parts required time are long.
Summary of the invention
The purpose of this utility model is a kind of easy-to-dismount type water injection well mouth check valve of design, while making water injection well stop noting for some reason, be injected into injected water in stratum and can not return and tell in Hui Jing, avoid water injection well to shake out, guarantee the water injection well water filling that again drives a well smoothly, and maintenance and to change parts convenient.
The purpose of this utility model is achieved in that and comprises airtight cylinder, valve bonnet, valve ball, valve seat, lateral openings joint, supported joint, outlet connection, valve ball, valve seat is arranged in valve bonnet, the top screw thread of supported joint is connected with the lower thread of valve bonnet, the upper surface of valve seat withstands on the circular bead surface in valve bonnet, the lower surface of valve seat is withstood in the upper surface of supported joint, the external diameter of valve ball is greater than the internal diameter of valve seat, the upper port fitted seal of valve ball and valve seat, the lower external thread of supported joint is connected with the lower internal thread of lateral openings joint, outlet connection is welded on the side opening place of open joint, on valve bonnet, have UNICOM's groove, between the inwall of the outer wall of supported joint and lateral openings joint, there is annular space, the top screw thread of supported joint is on lateral openings joint, the lower thread of airtight cylinder is threaded with the top of lateral openings joint, airtight barrel cover is lived valve bonnet, the inwall of airtight cylinder and cover between the outer wall of valve bonnet and have annular space, the top of airtight cylinder is enclosed construction.
The beneficial effects of the utility model are: when water injection well stops after note for some reason, valve ball falls, stop formation water to return to ground waterflood-transmission line, stratum can not produce excitement, can not shake out, in the time of need to overhauling valve member, dismantle airtight cylinder, outside the valve member that need to overhaul is just exposed to, is convenient to dismounting inspection and changes, do not need package unit to disassemble, thereby applicability is good.
Accompanying drawing explanation
Accompanying drawing is the assembling drawing of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described.
By figure, seen, embodiment of the present utility model comprises airtight cylinder 1, valve bonnet 2, valve ball 3, valve seat 4, lateral openings joint 5, supported joint 6, outlet connection 7, valve ball 3, valve seat 4 is arranged in valve bonnet 2, the top screw thread of supported joint 6 is connected with the lower thread of valve bonnet 2, the upper surface of valve seat 4 withstands on the circular bead surface in valve bonnet 2, the lower surface of valve seat 4 is withstood in the upper surface of supported joint 6, the external diameter of valve ball 3 is greater than the internal diameter of valve seat 4, the upper port fitted seal of valve ball 3 and valve seat 4, the lower external thread of supported joint 6 is connected with the lower internal thread of lateral openings joint 5, outlet connection 8 is welded on the side opening place of open joint 5, on valve bonnet 2, have UNICOM's groove, between the inwall of the outer wall of supported joint 6 and lateral openings joint 5, there is annular space, the top screw thread of supported joint 6 is on lateral openings joint 5, the lower thread of airtight cylinder 1 is threaded with the top of lateral openings joint 5, airtight cylinder 1 covers valve bonnet 2, the inwall of airtight cylinder 1 and cover between the outer wall of valve bonnet 2 and have annular space, the top of airtight cylinder 1 is enclosed construction.
Right-hand member and the injection well head assembly of outlet connection 7 weld together, the bottom of supported joint 6 and the welding of ground waterflood-transmission line.Injected water flows into injection well head assembly from outlet connection 7 and injects into well downwards after ground waterflood-transmission line enters jack-up valve ball 3.In the time of need to changing valve ball 3, remove airtight cylinder 1, make outside valve bonnet 2 is exposed to, thereby valve ball 3, valve seat 4 can be taken apart to inspection, to change.
Claims (1)
1. an easy-to-dismount type water injection well mouth check valve, comprise airtight cylinder (1), valve bonnet (2), valve ball (3), valve seat (4), lateral openings joint (5), supported joint (6), outlet connection (7), valve ball (3), valve seat (4) is arranged in valve bonnet (2), the top screw thread of supported joint (6) is connected with the lower thread of valve bonnet (2), the upper surface of valve seat (4) withstands on the circular bead surface in valve bonnet (2), the lower surface of valve seat (4) is withstood in the upper surface of supported joint (6), the external diameter of valve ball (3) is greater than the internal diameter of valve seat (4), the upper port fitted seal of valve ball (3) and valve seat (4), the lower external thread of supported joint (6) is connected with the lower internal thread of lateral openings joint (5), outlet connection (8) is welded on the side opening place of open joint (5), valve bonnet has UNICOM's groove on (2), it is characterized in that: between the outer wall of supported joint (6) and the inwall of lateral openings joint (5), have annular space, the top screw thread of supported joint (6) is on lateral openings joint (5), the lower thread of airtight cylinder (1) is threaded with the top of lateral openings joint (5), airtight cylinder (1) covers valve bonnet (2), the inwall of airtight cylinder (1) and cover between the outer wall of valve bonnet (2) and have annular space, the top of airtight cylinder (1) is enclosed construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642116.6U CN203515468U (en) | 2013-10-14 | 2013-10-14 | Water injection well opening check valve convenient to dismantle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642116.6U CN203515468U (en) | 2013-10-14 | 2013-10-14 | Water injection well opening check valve convenient to dismantle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515468U true CN203515468U (en) | 2014-04-02 |
Family
ID=50374415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642116.6U Expired - Fee Related CN203515468U (en) | 2013-10-14 | 2013-10-14 | Water injection well opening check valve convenient to dismantle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482950A (en) * | 2020-10-27 | 2022-05-13 | 中国石油天然气股份有限公司 | Injection increasing device for water injection well |
-
2013
- 2013-10-14 CN CN201320642116.6U patent/CN203515468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482950A (en) * | 2020-10-27 | 2022-05-13 | 中国石油天然气股份有限公司 | Injection increasing device for water injection well |
| CN114482950B (en) * | 2020-10-27 | 2023-09-26 | 中国石油天然气股份有限公司 | Injection increasing device for water injection well |
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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: 20140402 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |