CN2561921Y - Anti-over flow uniform valves - Google Patents
Anti-over flow uniform valves Download PDFInfo
- Publication number
- CN2561921Y CN2561921Y CN 02273749 CN02273749U CN2561921Y CN 2561921 Y CN2561921 Y CN 2561921Y CN 02273749 CN02273749 CN 02273749 CN 02273749 U CN02273749 U CN 02273749U CN 2561921 Y CN2561921 Y CN 2561921Y
- Authority
- CN
- China
- Prior art keywords
- ball seat
- ball
- pin
- piston rod
- well
- 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 - Fee Related
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- Check Valves (AREA)
Abstract
An anti-overflow check valve is provided, which relates to tools used at the bottom of water injection wells and well-flushing matched distributing pipes in oil fields. The valve comprises a shell body (1), a ball (2), the shell body (1) middle part is arranged with an inner basket plate (1-1), the shell body (1) lower end is arranged with an inner screw thread (1-2), and the ball (2) is arranged on the lower end of the basket plate (1-1) of the shell body (1). The valve also comprises a ball seat (3), a piston rod (4), a pin bold (6), as well as a catch lever (7); the upper end of the ball seat (3) is connected with the shell body (1) lower end, the piston rod (4) is arranged in the ball seat (3), one end of the pin bold (6) is arranged in a hole (3-1) on the ball seat (3), the other end of the pin bold (6) is arranged on lower end of the piston rod (4), the side wall of the ball seat (3) middle part is arranged with a hole (3-2), and the catch lever (7) is arranged in a hole (3-3) on the ball seat (3). The utility model has the advantages of rational structural design, easy processing, as well as convenient use, which not only can solve the problems of oil tube overflow after the well completion, but also can prevent the excluder from being released halfway.
Description
Technical field: the utility model relates to the instrument that water injection well in oil fields and washing well distribution pipe column bottom are used.
Background technology: at present water injection well, washing well tubing string bottom generally are to install to block (or blocking and ball seat), and to adapt to when the normal oil pipe water filling, blocking is in closed condition under the water injection pressure effect; And when needing well-flushing, well-flushing water enters from sleeve pipe, and through the well-flushing passage of packer, opening from the oil pipe bottom blocks enters oil pipe and return ground, realizes anti-circulation well cleanup.But this formula structure of blocking, when tubing string is transferred in the tubing string job execution, blocking of bottom is in opening all the time, this is because the borehole pressure height, well head oil pipe flow is big, forms certain pressure reduction inside and outside oil pipe, also causes packer to set easily midway, so that often do over again, influenced ordinary production.
Summary of the invention: the utility model is a kind of anti-overflow ball-and-seat of development, and the oil pipe overflow when making it solve completion can prevent that again packer from discharging midway.The utility model comprises housing 1, ball 2, and basket plate 1-1 is provided with internal thread 1-2 in the lower end of housing 1 in the middle part of housing 1 is provided with, and ball 2 is arranged on the lower end of the basket plate 1-1 of housing 1.It also comprises ball seat 3, piston rod 4, pin 6, pin 7; The upper end of ball seat 3 is connected with the lower end of housing 1, piston rod 4 is arranged in the ball seat 3, and an end of pin 6 is arranged in the hole 3-1 on the ball seat 3, and the other end of pin 6 is located at the lower end of piston rod 4, be provided with hole 3-2 on the sidewall at ball seat 3 middle parts, pin 7 is arranged in the hole 3-3 on the ball seat 3.The utlity model has reasonable in design, be easy to processing, advantage easy to use, the oil pipe overflow when not only having solved completion but also can prevent the problem that packer discharges midway.
Description of drawings: Fig. 1 is a structural representation of the present utility model.
The specific embodiment: present embodiment is made up of housing 1, ball 2, ball seat 3, piston rod 4, sealing ring 5, pin 6, pin 7.Basket plate 1-1 is provided with internal thread 1-2 in the lower end of housing 1 in the middle part of housing 1 is provided with, and ball 2 is arranged on the lower end of the basket plate 1-1 of housing 1.The upper end of ball seat 3 is connected with the lower end of housing 1, piston rod 4 is arranged in the ball seat 3, and an end of pin 6 is arranged in the hole 3-1 on the ball seat 3, and the other end of pin 6 is located at the lower end of piston rod 4, be provided with hole 3-2 on the sidewall at ball seat 3 middle parts, pin 7 is arranged in the hole 3-3 on the ball seat 3.Pin 7 can prevent that piston rod 4 from falling into the shaft bottom, is provided with sealing ring 5 between ball seat 3 and piston rod 4, and sealing ring 5 makes good sealing effect, bottom feed liquor when preventing that tubing string from going into the well.Its operating principle is: ball 2 usefulness packed-piston bars 4 are propped, left ball seat 3, piston rod 4 and the sealing of ball seat 3 by sealing ring 5, bottom feed liquor when preventing that tubing string from going into the well.After the completion water filling, water injection pressure acts on the piston of piston rod 4, and it is descending that piston rod 4 is cut off pin 6, depressurization.The ball return of serve seat that also falls is blocked thereby become; Well-flushing water is opened ball 2 and is entered oil pipe and return ground during well-flushing from oil pipe bottom, realizes anti-circulation well cleanup.
Claims (2)
1, anti-overflow ball-and-seat, it comprises housing (1), ball (2), basket plate (1-1) in the middle part of housing (1) is provided with, be provided with internal thread (1-2) in the lower end of housing (1), ball (2) is arranged on the lower end of the basket plate (1-1) of housing (1), it is characterized in that it also comprises ball seat (3), piston rod (4), pin (6), pin (7); The upper end of ball seat (3) is connected with the lower end of housing (1), piston rod (4) is arranged in the ball seat (3), one end of pin (6) is arranged in the hole (3-1) on the ball seat (3), the other end of pin (6) is located at the lower end of piston rod (4), be provided with hole (3-2) on the sidewall at ball seat (3) middle part, pin (7) is arranged in the hole (3-3) on the ball seat (3).
2, anti-overflow ball-and-seat according to claim 1 is characterized in that being provided with sealing ring (5) between ball seat (3) and piston rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273749 CN2561921Y (en) | 2002-06-17 | 2002-06-17 | Anti-over flow uniform valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273749 CN2561921Y (en) | 2002-06-17 | 2002-06-17 | Anti-over flow uniform valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561921Y true CN2561921Y (en) | 2003-07-23 |
Family
ID=33738168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02273749 Expired - Fee Related CN2561921Y (en) | 2002-06-17 | 2002-06-17 | Anti-over flow uniform valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561921Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358515B (en) * | 2007-07-31 | 2011-09-07 | 中国石油天然气股份有限公司 | Flow divider for normal flushing well |
| CN108457620A (en) * | 2018-03-16 | 2018-08-28 | 江苏航天鸿鹏数控机械有限公司 | Pass through the electro-hydraulic driving back-pressure valve and its control method of remote control |
-
2002
- 2002-06-17 CN CN 02273749 patent/CN2561921Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358515B (en) * | 2007-07-31 | 2011-09-07 | 中国石油天然气股份有限公司 | Flow divider for normal flushing well |
| CN108457620A (en) * | 2018-03-16 | 2018-08-28 | 江苏航天鸿鹏数控机械有限公司 | Pass through the electro-hydraulic driving back-pressure valve and its control method of remote control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030723 Termination date: 20100617 |