CN103485743A - Oil layer leak-proof device - Google Patents
Oil layer leak-proof device Download PDFInfo
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- CN103485743A CN103485743A CN201210194407.3A CN201210194407A CN103485743A CN 103485743 A CN103485743 A CN 103485743A CN 201210194407 A CN201210194407 A CN 201210194407A CN 103485743 A CN103485743 A CN 103485743A
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- leak
- central tube
- oil reservoir
- proof device
- oil
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Abstract
The invention relates to an oil layer leak-proof device, which consists of a packer (2), a coupling (3), a first central pipe (4), an adapter connector (6) and a leak-proof valve (7), wherein the packer (2) is arranged inside a bushing (1) above an oil inlet hole (5) and adjacent to the oil inlet hole (5) of an oil layer, the leak-proof valve (7) is arranged inside the bushing (1) below the oil inlet hole (5) and adjacent to the oil inlet hole (5) of the oil layer, and a second central pipe, the coupling (3), the first central pipe (4), the adapter connector (6) and a third central pipe (8) in the leak-proof valve (7) are sequentially in thread connection with one another. The leak-proof valve (7) is an annular space check valve. By adopting the length of the first central pipe (4), the oil layer leak-proof device can be applied to the oil layer of different thicknesses. The oil layer leak-proof device is used for preventing the leakage on an oil well with severe leakage of the oil layer.
Description
Technical field
The present invention relates to a kind of petroleum machinery oil production equipment downhole tool, particularly a kind of oil well sand washing, well-flushing, kill-job, prevent the oil reservoir leak-proof device of formation leakage during for the wet goods operation.
Background technology
At present, existing reasonable sand washing lost circulation prevention technology is the coiled tubing sand washing, uses the leather cup lost circulation prevention.Several meters of every sand washings, then be lowered to several meters of oil pipe (sand clean out pipe), leather cups etc.Once shortcoming is oil reservoir, expose, the whiles such as sand, liquid and foul just start leakage, so it can only reduce part leakage.Construct also cumbersome.In addition, it,, for well-flushing (wax removal etc.), kill-job, for the wet goods operation, just can not prevent the leakage of the fouls such as liquid, can not prevent polluted reservoir, causes oil well to fall and produces or stopping production.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of oil reservoir leak-proof device, the foul leakages such as liquid, sand for construction while preventing oil well operation, polluted reservoir; While preventing from driving a well, sand returns and tells in a large number, causes oil well sand to bury oil reservoir and stops production, or significantly fall product.
For solving the problems of the technologies described above, oil reservoir leak-proof device of the present invention, by packer 2, box cupling 3, the first central tube 4, variable buckle 6 and anti-drip valve 7, formed, wherein, above-mentioned packer 2 is arranged on the oil reservoir fuel feed hole and is close in the sleeve pipe 1 of fuel feed hole 5 more than 5, above-mentioned anti-drip valve 7 is arranged on the oil reservoir fuel feed hole and is close to below 5 in the sleeve pipe 1 of fuel feed hole 5, and in above-mentioned packer 2, the second central tube, box cupling 3, the first central tube 4, variable buckle 6 and interior the 3rd central tube 8 of anti-drip valve 7 are threaded successively.
Above-mentioned anti-drip valve 7 is comprised of the 3rd central tube 8, outer seat 9, spool 10, vavle shelf 11 and leather cup 12, above-mentioned vavle shelf 11, the 3rd central tube 8 and outer seat 9 are threaded successively, vavle shelf 11 is upwards held spool 10, and leather cup 12 tops embed vavle shelf 11, and the outer valve seat 9 of leather cup 12 and vavle shelf 11 compress.
Above-mentioned spool 10 is annular, and cross section is triangle.
Above-mentioned anti-drip valve 7 is the annular space ball-and-seat.
Above-mentioned the first central tube 4 length can be according to the core intersection adjustment.
Adopt the technical program, during at oil well sand washing, well-flushing, kill-job, for the wet goods operation, use oil reservoir leak-proof device of the present invention, prevent the fouls leakage polluted reservoirs such as liquid, sand for construction; Produce a large amount of sand at the Shi Buhui that drives a well and return the situation of telling, prevent that sand from burying oil reservoir and stopping production, or significantly fall product.It can maintain oil well output, can extend the workover treatment cycle, reduces the operation number of times, reduces and accounts for the product time.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The structural representation that Fig. 1 is oil reservoir leak-proof device of the present invention;
The structural representation that Fig. 2 is anti-drip valve;
The vavle shelf A-A sectional drawing that Fig. 3 is anti-drip valve;
The leather cup B-B sectional drawing that Fig. 4 is anti-drip valve.
The specific embodiment
As shown in Figure 1, a kind of oil reservoir leak-proof device, next packer 2 of the upper bound at the oil reservoir fuel feed hole 5 of sleeve pipe 1, next anti-drip valve 7 of lower bound at oil reservoir fuel feed hole 5, the 3rd central tube 8 of anti-drip valve 7 is threaded with the first central tube 4 with the second central tube of packer 2 by variable buckle 6 and box cupling 3, forms whole oil reservoir leak-proof device.As shown in Figure 2, anti-drip valve 7 is comprised of the 3rd central tube 8, outer seat 9, spool 10, vavle shelf 11 and leather cup 12, and vavle shelf 11 is threaded with the 3rd central tube 8 and outer seat 9, and vavle shelf 11 is upwards held spool 10, leather cup 12 tops embed vavle shelf 11, and the outer valve seat 9 of leather cup 12 compresses with vavle shelf 11.The spool 10 of anti-drip valve 7 is annular, and cross section is triangle.As shown in Figure 3, vavle shelf 11 bottom A-A sections are annular space shape, and as shown in Figure 4, leather cup 12 bottom B-B sections are the fan hole shape, and the centre bore aperture is less than the sand clean out pipe external diameter.Anti-drip valve 7 is the annular space ball-and-seat.The length of center-adjustable pipe 4 adapts to the thickness of oil reservoir.
When oil well is normally produced, stratum liquid enters from oil reservoir fuel feed hole 5 annular space that sleeve pipe 1 and the first central tube 4 form, and flows downward, and prevents long-pending sand, the annular space of the 3rd central tube 8 and outer seat 9 formations of flowing through, through the space of spool 10 both sides, the annular space of process vavle shelf 11; Perhaps the flow through annular clearance of sleeve pipe 1 and outer seat 9, the hole through leather cup 12, upwards enter the 3rd central tube 8, and then enter oil pump by the first central tube 4; Oil well is during in sand washing, well-flushing, kill-job, for the wet goods operation, and spool 10 is up under liquid stream, hydraulic action, blocks passage, leather cup 12 under sand clean out pipe extruding, under liquid stream, hydraulic action, expanded radially, seal the annular clearance of sleeve pipe 1 and outer seat 9, reach the purpose that prevents leakage fully.
Claims (5)
1. an oil reservoir leak-proof device, by packer (2), box cupling (3), the first central tube (4), variable buckle (6) and anti-drip valve (7), formed, it is characterized in that: described packer (2) is arranged in the sleeve pipe (1) of oil reservoir fuel feed hole (5) above next-door neighbour fuel feed hole (5), described anti-drip valve (7) is arranged in the sleeve pipe (1) of oil reservoir fuel feed hole (5) following next-door neighbour fuel feed hole (5), and in described packer (2), interior the 3rd central tube (8) of the second central tube, box cupling (3), the first central tube (4), variable buckle (6) and anti-drip valve (7) is threaded successively.
2. oil reservoir leak-proof device according to claim 1, it is characterized in that: described anti-drip valve (7) is comprised of the 3rd central tube (8), outer seat (9), spool (10), vavle shelf (11) and leather cup (12), described vavle shelf (11), the 3rd central tube (8) and outer seat (9) are threaded successively, vavle shelf (11) is upwards held spool (10), leather cup (12) top embeds vavle shelf (11), and the outer valve seat of leather cup (12) (9) and vavle shelf (11) compress.
3. oil reservoir leak-proof device according to claim 2, it is characterized in that: described spool (10) is annular, and cross section is triangle.
4. oil reservoir leak-proof device according to claim 2 is characterized in that: described anti-drip valve (7) is the annular space ball-and-seat.
5. oil reservoir leak-proof device according to claim 1, it is characterized in that: described the first central tube (4) length can be according to the core intersection adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194407.3A CN103485743B (en) | 2012-06-13 | 2012-06-13 | Oil layer leak-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194407.3A CN103485743B (en) | 2012-06-13 | 2012-06-13 | Oil layer leak-proof device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103485743A true CN103485743A (en) | 2014-01-01 |
| CN103485743B CN103485743B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210194407.3A Active CN103485743B (en) | 2012-06-13 | 2012-06-13 | Oil layer leak-proof device |
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| Country | Link |
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| CN (1) | CN103485743B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205358A (en) * | 1991-07-16 | 1993-04-27 | Mitzlaff Darald D | Pipe plugging system |
| CN2639504Y (en) * | 2003-08-29 | 2004-09-08 | 张宣来 | Multifunction oil well anti-pollution tubular column |
| CN2811547Y (en) * | 2005-05-12 | 2006-08-30 | 贺明 | Double-pipe bidirectional leather-cup leakproof sand washing string in oil production |
| CN201865627U (en) * | 2010-09-06 | 2011-06-15 | 中国海洋石油总公司 | Ball valve type oil reservoir protective valve |
| CN102400662A (en) * | 2011-11-21 | 2012-04-04 | 中国海洋石油总公司 | Pluggable oil-layer anti-leakage valve |
| CN202731828U (en) * | 2012-06-13 | 2013-02-13 | 中国石油天然气股份有限公司 | Oil layer anti-leakage device |
-
2012
- 2012-06-13 CN CN201210194407.3A patent/CN103485743B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205358A (en) * | 1991-07-16 | 1993-04-27 | Mitzlaff Darald D | Pipe plugging system |
| CN2639504Y (en) * | 2003-08-29 | 2004-09-08 | 张宣来 | Multifunction oil well anti-pollution tubular column |
| CN2811547Y (en) * | 2005-05-12 | 2006-08-30 | 贺明 | Double-pipe bidirectional leather-cup leakproof sand washing string in oil production |
| CN201865627U (en) * | 2010-09-06 | 2011-06-15 | 中国海洋石油总公司 | Ball valve type oil reservoir protective valve |
| CN102400662A (en) * | 2011-11-21 | 2012-04-04 | 中国海洋石油总公司 | Pluggable oil-layer anti-leakage valve |
| CN202731828U (en) * | 2012-06-13 | 2013-02-13 | 中国石油天然气股份有限公司 | Oil layer anti-leakage device |
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| Publication number | Publication date |
|---|---|
| CN103485743B (en) | 2016-02-10 |
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