CN101988379A - Backflow-resistant device of eccentric water distributor - Google Patents
Backflow-resistant device of eccentric water distributor Download PDFInfo
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- CN101988379A CN101988379A CN2010105399236A CN201010539923A CN101988379A CN 101988379 A CN101988379 A CN 101988379A CN 2010105399236 A CN2010105399236 A CN 2010105399236A CN 201010539923 A CN201010539923 A CN 201010539923A CN 101988379 A CN101988379 A CN 101988379A
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- installing hole
- backflow
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Abstract
The invention relates to a backflow-resistant device of an eccentric water distributor, which comprises a main body, wherein the main body is provided with a stopper installing hole, the main body is provided with a vertical hole, the vertical hole is adjoining to the stopper installing hole, a ball seat hole is arranged under the vertical hole, a valve ball is arranged on the port of the ball seat hole, the vertical hole is communicated with the outside world by a water outlet hole, the upper end of the vertical hole is stopped by a stopping rod, the stopping rod seals the vertical hole in a matching way, the ball seat hole is communicated with the stopper installing hole by a passageway, the passageway is arranged under the valve ball, the stopper installing hole is separated from the water outlet hole by the valve ball, the water in the stopper installing hole can flow out of the water outlet hole, and the water out of the water outlet hole can not flow into the stopper installing hole, so that the backflow-resistant device can avoid the backflow of the water, thereby avoiding the position cross flow and the layer cross flow in a water injecting layer and preventing sands from returning to a water injecting well. The backflow-resistant device does not need to inversely install the valve ball to be less in parts, reasonable in structure, and long in service life, and prevents the sands from returning to the water injecting well for a long time to lead the water injecting well to be capable of normally injecting the water for a long time and be obvious in economic benefit.
Description
Technical field
The invention 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 objective of the invention is to design a kind of eccentric injection mandrel anti-backflow device, make it rational in infrastructure, long service life prevents interlayer channelling between water filling layer position, avoids the water injection well sand return.
The object of the present invention is achieved like this: main body is arranged, 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 invention has the beneficial effects as follows: 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, valve ball of the present invention 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 invention.
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 embodiments of the invention are described.
As shown in the figure, embodiments of the invention have 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 present invention 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 |
|---|---|---|---|
| CN2010105399236A CN101988379A (en) | 2010-11-04 | 2010-11-04 | Backflow-resistant device of eccentric water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105399236A CN101988379A (en) | 2010-11-04 | 2010-11-04 | Backflow-resistant device of eccentric water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988379A true CN101988379A (en) | 2011-03-23 |
Family
ID=43745140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105399236A Pending CN101988379A (en) | 2010-11-04 | 2010-11-04 | Backflow-resistant device of eccentric water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625835A (en) * | 2018-08-07 | 2018-10-09 | 阜宁县石油机械有限公司 | A kind of eccentric injection mandrel |
| CN110924909A (en) * | 2019-11-21 | 2020-03-27 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596001Y (en) * | 2002-07-11 | 2003-12-31 | 中国石油化工股份有限公司中原油田分公司采油一厂 | Well-head water distributor |
| CN2900778Y (en) * | 2006-04-11 | 2007-05-16 | 高法会 | Non-return type bias water distributor |
| CN2906056Y (en) * | 2006-06-23 | 2007-05-30 | 长葛市福侨电器材料厂 | Offset water distributor |
| CN201144679Y (en) * | 2007-10-11 | 2008-11-05 | 孔宪春 | Anti-pollution eccentric water distributor having well reverse cleanout function |
| CN201835805U (en) * | 2010-11-04 | 2011-05-18 | 李永祥 | Anti-counter flow device for eccentric water distributor |
-
2010
- 2010-11-04 CN CN2010105399236A patent/CN101988379A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596001Y (en) * | 2002-07-11 | 2003-12-31 | 中国石油化工股份有限公司中原油田分公司采油一厂 | Well-head water distributor |
| CN2900778Y (en) * | 2006-04-11 | 2007-05-16 | 高法会 | Non-return type bias water distributor |
| CN2906056Y (en) * | 2006-06-23 | 2007-05-30 | 长葛市福侨电器材料厂 | Offset water distributor |
| CN201144679Y (en) * | 2007-10-11 | 2008-11-05 | 孔宪春 | Anti-pollution eccentric water distributor having well reverse cleanout function |
| CN201835805U (en) * | 2010-11-04 | 2011-05-18 | 李永祥 | Anti-counter flow device for eccentric water distributor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625835A (en) * | 2018-08-07 | 2018-10-09 | 阜宁县石油机械有限公司 | A kind of eccentric injection mandrel |
| CN108625835B (en) * | 2018-08-07 | 2023-11-24 | 阜宁县石油机械有限公司 | Eccentric water distributor |
| CN110924909A (en) * | 2019-11-21 | 2020-03-27 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
| CN110924909B (en) * | 2019-11-21 | 2020-07-14 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |