CN201835805U - Anti-counter flow device for eccentric water distributor - Google Patents
Anti-counter flow device for eccentric water distributor Download PDFInfo
- Publication number
- CN201835805U CN201835805U CN2010206022567U CN201020602256U CN201835805U CN 201835805 U CN201835805 U CN 201835805U CN 2010206022567 U CN2010206022567 U CN 2010206022567U CN 201020602256 U CN201020602256 U CN 201020602256U CN 201835805 U CN201835805 U CN 201835805U
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- hole
- water
- counter flow
- stopper mounting
- ball seat
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- Expired - Fee Related
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Abstract
The utility model relates to an anti-counter flow device for an eccentric water distributor, comprising a body; the body is provided with a stopper mounting hole and a vertical hole adjacent to the stopper mounting hole, a ball seat hole is arranged under the vertical hole, and a valve ball seat is arranged at a port of the ball seat hole; and the vertical hole is communicated with the outside through a water discharge hole, the upper end of the vertical hole is blocked through a blocking rod which seals the vertical hole in a matching manner, and the ball seat hole is communicated with the stopper mounting hole through a passage positioned under the valve ball, and the valve ball separates the stopper mounting hole from the water discharge hole; and water in the stopper mounting hole can flow out towards the water discharge hole, and water outside the water discharge hole can not flow into the stopper mounting hole, therefore, the anti-counter flow device can play the anti-counter flow role, prevent the fluid channeling among interlayers of a water injection layer and avoid sand return of a water injection well. The anti-counter flow device for the eccentric water distributor has the advantages that reverse-hanging installation is free, components are less, structure is reasonable, service life is long, and the water injection well can be free from the influence of sand return for a long time and has a long normal water injection cycle, therefore, the anti-counter flow device for the eccentric water distributor has outstanding economic benefit.
Description
Technical field
The utility model belongs to the device of used for water injection wells in oil fields, is a kind of eccentric injection mandrel anti-backflow device.
Background technology
The water injection well that has is the multilayer water filling, the water injection rate difference of each layer needs to install injection well downhole flow regulator and carries out the water filling of layering component, because the pressure difference of each layer, when the multilayer water injection well stops annotating for some reason, the layer that pressure is high can be moving to the low laminar flow of pressure, is called refluence, and water injection well stops notes for some reason and produces when flowing backwards, easily reservoir sand is taken out of, cause sand to bury waterflood path, the easier sand card tubing string that causes produces heavy economic losses.In order to address this problem, adopted the non-return eccentric injection mandrel, as Chinese patent application: 200620025777.4 " returning the formula eccentric injection mandrels " can stop to annotate the problem of shaking out that flows backwards and cause that produces for some reason through solving water injection well.But the unreasonable structure of this injection well downhole flow regulator, check ball is hung installation by the feet, supports check ball by spring, and the spring damage that is corroded easily also easily by the current puncture damage, causes that check ball can not stop up non-return passage, loses the anti counter-flowing effect.
Summary of the invention
The purpose of this utility model is a kind of eccentric injection mandrel anti-backflow device of design, makes it rational in infrastructure, and long service life prevents interlayer channelling between water filling layer position, avoids the water injection well sand return.
The purpose of this utility model has been achieved in that main body, the blanking plug installing hole is arranged on the main body, and main body is provided with vertical core, and vertical core is adjacent with the blanking plug installing hole, be provided with the ball seat hole under the vertical core, valve ball is located on the port in ball seat hole, and vertical core is by the outside UNICOM of weep hole, and the vertical core upper end is stopped up by blocked shot, blocked shot and vertical core fitted seal, ball seat hole and blanking plug installing hole are by passage UNICOM, and passage is under the valve ball, and blanking plug installing hole and weep hole are isolated by valve ball.
The beneficial effects of the utility model are: the water in the blanking plug installing hole can flow out to the weep hole place, the outer water of weep hole can not flow in the blanking plug installing hole, can play the effect of anti counter-flowing, prevents interlayer channelling between water filling layer position, avoid the water injection well sand return, the utility model valve ball is not hung installation by the feet, and component are few, and is rational in infrastructure, long service life, water injection well can not be subjected to the influence of sand return for a long time, and the normal water injection cycle of water injection well is long, has remarkable economic efficiency.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the profile after cutting open from A-A among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
As shown in the figure, embodiment of the present utility model has blocked shot 1, valve ball 4, main body 7, blanking plug installing hole 8 is arranged on the main body 7, main body 7 is provided with vertical core 2, vertical core 2 is adjacent with blanking plug installing hole 8, be provided with ball seat hole 5 under the vertical core 2, valve ball 4 is located on the port in ball seat hole 5, vertical core 2 is by weep hole 3 outside UNICOMs, vertical core 2 upper ends are stopped up by blocked shot 1, blocked shot 1 and vertical core 2 fitted seal, ball seat hole 5 and blanking plug installing hole 8 are by passage 6 UNICOMs, and passage 6 is under the valve ball 4, passage 6 forms by be drilled with side down hole on main body 7, side down hole blocks it at port after ball seat hole 5 and blanking plug installing hole 8 UNICOMs, and passage 6 also can carry out reaming and form UNICOM in ball seat hole 5 and blanking plug installing hole 8, and it is big that this formation passage 6 difficulty of processing are wanted.Blanking plug installing hole 8 is isolated by valve ball 4 with weep hole 3, and the water of 8 li of its blanking plug installing holes can be flowed out to weep hole 3 places, and weep hole 3 outer water can not can play the effect of anti counter-flowing to 8 li streams of blanking plug installing hole.
When the utility model and other parts were formed eccentric injection mandrel and carried out water filling, blanking plug installing hole 8 dropped into blanking plugs, injected water and entered from passage 6 after the blanking plug water distribution and upwards back down valve ball 4, injected stratum through vertical core 2, weep hole 3.When stopping annotating for some reason, valve ball 4 falls, and seat isolates weep hole 3 and passage 6 on the port in ball seat hole 5, and formation water can not backflow, and high pressure zone can not avoid water injection well to shake out to the channelling of low pressure layer.The central through hole of main body is crossed tester and throw in catcher.
Claims (1)
1. eccentric injection mandrel anti-backflow device, main body (7) is arranged, blanking plug installing hole (8) is arranged on the main body (7), it is characterized in that: main body (7) is provided with vertical core (2), vertical core (2) is adjacent with blanking plug installing hole (8), be provided with ball seat hole (5) under the vertical core (2), valve ball (4) is located on the port of ball seat hole (5), vertical core (2) is by the outside UNICOM of weep hole (3), vertical core (2) upper end is stopped up by blocked shot (1), blocked shot (1) and vertical core (2) fitted seal, and ball seat hole (5) and blanking plug installing hole (8) are by passage (6) UNICOM, passage (6) is under the valve ball (4), and blanking plug installing hole (8) is isolated by valve ball (4) with weep hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206022567U CN201835805U (en) | 2010-11-04 | 2010-11-04 | Anti-counter flow device for eccentric water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206022567U CN201835805U (en) | 2010-11-04 | 2010-11-04 | Anti-counter flow device for eccentric water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835805U true CN201835805U (en) | 2011-05-18 |
Family
ID=44005911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206022567U Expired - Fee Related CN201835805U (en) | 2010-11-04 | 2010-11-04 | Anti-counter flow device for eccentric water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
-
2010
- 2010-11-04 CN CN2010206022567U patent/CN201835805U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
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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: 20110518 Termination date: 20121104 |