CN2782917Y - Dextral rotation desterlized hydraulic well-flushing packer - Google Patents
Dextral rotation desterlized hydraulic well-flushing packer Download PDFInfo
- Publication number
- CN2782917Y CN2782917Y CN 200520020661 CN200520020661U CN2782917Y CN 2782917 Y CN2782917 Y CN 2782917Y CN 200520020661 CN200520020661 CN 200520020661 CN 200520020661 U CN200520020661 U CN 200520020661U CN 2782917 Y CN2782917 Y CN 2782917Y
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- Prior art keywords
- deblocking
- well
- lining
- piston
- unsealing
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- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic well-flushing packer with dextral rotation for unsealing, which mainly solves the problems of early unsealing or no unsealing and poor sealing effect in the well flushing process. The utility model is characterized in that an unsealing piston 5 is connected with a central pipe (2) through a left hand thread (7), and an end surface bearing (8) is fixed at the outer part of the central pipe (2) above a lining (6); a sealing packing (10), the inner wall of which is provided with an annular groove (9), is arranged between a well flushing valve (3) and the lining (6), a pressure ring (11) is arranged in the groove (9), and a self-seal packing (12), the half cross section of which is in the shape of an L, is arranged between the lining (6) and an upper rubber barrel seat (4) of which the side wall is provided with a counter hole (16). The utility model eliminates the possibility of early unsealing or no unsealing, and a well flushing valve adopts double sealing. The utility model has the characteristics of safe setting and unsealing, favorable sealing performance in the well flushing process and sand burying prevention.
Description
Technical field:
The utility model relates to the seperated layer water injection packer that a kind of separated-zone water infection oil field is used, and belongs to the washing well hydraulic packer of hydrostatic waterpower compression dextrorotation deblocking.
Background technology:
During the oilfield exploitation seperated layer water injection, packer is a kind of downhole tool of using always, utilizes packer multiple zone can be divided into some intervals, and it is the effective ways of realizing oil field stable high yield that the oil reservoir of different permeabilities is carried out the subdivision of reservoir water filling.The packer used of oilfield exploitation mostly was the Y341 type in the past, and deblocking adopts the upper lifting pipe post to cut off deblocking pin or deblocking mode not substantially.Because the existence of interlayer pressure difference, the rational shear strength of deblocking pin be difficult to determine, exist packer and shift to an earlier date deblocking or deblocking problem not.In advance deblocking will cause the oil-water well can't layering, and deblocking will not cause the upper lifting pipe column load to increase, fly the excessive problem such as environmental protection that is unfavorable for of tubing string and borehole fluid.In addition, repeatedly repeat to exist well-flushing mechanism poor sealing and long-pending sand to bury the problem of well-flushing feeder connection behind the well-flushing.
The utility model content:
Shift to an earlier date the deblocking or the deficiency of deblocking and washing well process sealing effectiveness difference not in order to overcome existing packer, the utility model provides a kind of washing well hydraulic packer of dextrorotation deblocking, the washing well hydraulic packer of this dextrorotation deblocking has been got rid of deblocking or the not possibility of deblocking in advance, double seal has been adopted in the sealing of well-flushing valve, has seat envelope and deblocking is safe and reliable, washing well process good seal performance and sand control bury characteristics.
The technical solution of the utility model is: the washing well hydraulic packer of this dextrorotation deblocking comprises top connection, central tube, well-flushing valve, upward glue tube base, deblocking piston, lock ring cover and seat seal piston, central tube is with lining outward, being connected with lock ring under the deblocking piston hangs, link to each other by left hand thread between deblocking piston and the central tube, the central tube external fixation of lining top has the end face bearing; Have inwall to have the sealed packing of annular groove between well-flushing valve and the lining, groove is built-in with pressure ring, and sidewall has that between the last glue tube base of counterbore and the lining half section to be arranged be the self-styled packing of " L " type.
The lower surface of above-mentioned well-flushing valve and the upper surface of self-styled packing are the taper seat that coincide mutually; Central tube, deblocking piston, lock ring cover and seat envelope piston surround closed cavity.
The utlity model has following beneficial effect: owing to take such scheme, the offset nail is understood in cancellation, utilize the dextrorotation central tube to carry out deblocking, during deblocking, the dextrorotation top connection drives central tube and rotates, and deblocking piston and central tube are broken away from fast, has realized the deblocking of retaining mechanism, the deblocking piston is connected with left hand thread with central tube and has got rid of deblocking or the not possibility of deblocking in advance, and seat envelope and deblocking are safe and reliable; During well-flushing, because the sealed packing inwall between well-flushing valve and the lining has annular groove and built-in pressure ring, make it have certain sealing compensation, it is the self-styled packing of " L " type that the half section is arranged between last glue tube base and the lining, and self-styled packing has self-styled performance, and self-styled packing can be close to the lining outer wall, thereby washing well process good seal performance, the sidewall of last glue tube base has counterbore, can store the fine sand of alluvial in the counterbore, has avoided long-pending sand to bury the inlet of well-flushing passage.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is A portion enlarged drawings among Fig. 1.
1-top connection among the figure, 2-central tube, 3-well-flushing valve, the last glue tube base of 4-, 5-deblocking piston, 6-lining, 7-left hand thread, 8-end face bearing, 9-annular groove, the 10-sealed packing, 11-pressure ring, the self-styled packing of 12-, 13-lock ring cover, 14-seat envelope piston, the 15-lock ring is hung, the 16-counterbore, 17-well-flushing valve seat, 18-pin.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As Fig. 1 in conjunction with shown in Figure 2, the washing well hydraulic packer of this dextrorotation deblocking comprises top connection 1, central tube 2, well-flushing valve 3, upward glue tube base 4, deblocking piston 5, lock ring cover 13 and seat seal piston 14, the central tube 2 outer linings 6 that are with, the deblocking piston is connected with lock ring for 5 times and hangs 15, link to each other by left hand thread 7 between deblocking piston 5 and the central tube 2, central tube 2 external fixation of lining 6 tops have end face bearing 8, and the lower surface lining 6 of end face bearing 8 contacts; Have inwall to have the sealed packing 10 of annular groove 9 between well-flushing valve 3 and the lining 6, groove 9 is built-in with pressure ring 11, has counterbore 16 on the sidewall of last glue tube base 4, and it is the self-styled packing 12 of " L " type that the half section is arranged between last glue tube base 4 and the lining 6.The upper surface of the lower surface of well-flushing valve 3 and self-styled packing 12 is the taper seat that coincide mutually, good airproof performance; Central tube 2, deblocking piston 5, lock ring cover 13 and seat envelope piston 14 surround closed cavity, and deblocking back seat envelope piston 14 automatically resets under compressed-air actuated pressure effect.
During actual the use, utilize oil pipe with this packer down to desired depth.During the seat envelope, in oil pipe, inject water under high pressure, water under high pressure is on the present envelope of the inlet opening effect piston 14 of central tube 2 lower ends, move on the seat envelope piston 14 an offset nail 18 is cut off, seat envelope piston 14 drives lock ring cover 13 and continues up, the compression packing element makes it produce distortion, and lock ring cover 13 is hung 15 interlocks with lock ring and formed the self-locking that seat is honored as a queen simultaneously.During deblocking, dextrorotation top connection 1 drives central tube 2 and rotates, the sealing mechanism of central tube 2 outside deblocking piston 5, lining 6 and lining 6 rotates, deblocking piston 5 and central tube 2 are broken away from fast, realized the deblocking of retaining mechanism, deblocking piston 5 is connected with left hand thread with central tube 2 and has got rid of deblocking or the not possibility of deblocking in advance, and seat envelope and deblocking are safe and reliable.During well-flushing, well-flushing valve 3 moves under the backwash action of hydraulic force, opens the well-flushing passage, and flushing fluid is flowed out by well-flushing duct, lining 6 lower end by lining 6 upper end through holes annular space between central tube 2 and lining 6, realizes well-flushing; Because sealed packing 10 inwalls between well-flushing valve 3 and the lining 6 have annular groove 9 and built-in pressure ring 11, make it have certain sealing compensation, it is the self-styled packing 12 of " L " type that the half section is arranged between last glue tube base 4 and the lining 6, self-styled packing 12 has self-styled performance, self-styled packing 12 can be close to lining 6 outer walls, thereby in the washing well process good seal performance, the sidewall of last glue tube base 4 has counterbore 16, can store the fine sand of alluvial in the counterbore 16, avoid long-pending sand to bury the inlet of well-flushing passage.When well-flushing finished the normal water filling in back, the through hole of press water through central tube 2 upper ends that injects in the oil pipe acted on the well-flushing valve seat 17, and well-flushing valve seat 17 moves downward with last glue tube base 4 and is adjacent to sealing, normal water filling.
Claims (3)
1, a kind of washing well hydraulic packer of dextrorotation deblocking, comprise top connection (1), central tube (2), well-flushing valve (3), last glue tube base (4), deblocking piston (5), lock ring cover (13) and seat envelope piston (14), the outer lining (6) that is with of central tube (2), be connected with lock ring under the deblocking piston (5) and hang (15), it is characterized in that: link to each other by left hand thread (7) between deblocking piston (5) and the central tube (2), central tube (2) external fixation of lining (6) top has end face bearing (8); There is inwall to have the sealed packing (10) of annular groove (9) between well-flushing valve (3) and the lining (6), groove (9) is built-in with pressure ring (11), and sidewall has that between the last glue tube base (4) of counterbore (16) and the lining (6) half section to be arranged be the self-styled packing (12) of " L " type.
2, according to wanting the sharp washing well hydraulic packer that requires 1 described dextrorotation deblocking, it is characterized in that: the taper seat of the upper surface of the lower surface of well-flushing valve (3) and self-styled packing (12) for coincideing mutually.
3, according to wanting the sharp washing well hydraulic packer that requires 1 described dextrorotation deblocking, it is characterized in that: central tube (2), deblocking piston (5), lock ring cover (13) and seat envelope piston (14) surround closed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020661 CN2782917Y (en) | 2005-04-18 | 2005-04-18 | Dextral rotation desterlized hydraulic well-flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020661 CN2782917Y (en) | 2005-04-18 | 2005-04-18 | Dextral rotation desterlized hydraulic well-flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2782917Y true CN2782917Y (en) | 2006-05-24 |
Family
ID=36767903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520020661 Expired - Fee Related CN2782917Y (en) | 2005-04-18 | 2005-04-18 | Dextral rotation desterlized hydraulic well-flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2782917Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337860A (en) * | 2010-09-03 | 2012-02-01 | 中国石油大学(北京) | Packer |
-
2005
- 2005-04-18 CN CN 200520020661 patent/CN2782917Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337860A (en) * | 2010-09-03 | 2012-02-01 | 中国石油大学(北京) | Packer |
| CN102337860B (en) * | 2010-09-03 | 2014-04-16 | 中国石油大学(北京) | Packer |
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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: 20060524 |