CN2490313Y - High-pressure squeezing packer - Google Patents
High-pressure squeezing packer Download PDFInfo
- Publication number
- CN2490313Y CN2490313Y CN 01221500 CN01221500U CN2490313Y CN 2490313 Y CN2490313 Y CN 2490313Y CN 01221500 CN01221500 CN 01221500 CN 01221500 U CN01221500 U CN 01221500U CN 2490313 Y CN2490313 Y CN 2490313Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- anchor
- cone body
- central pipe
- packer
- 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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Abstract
The utility model discloses a high-pressure squeezing packer, which consists of a pressing joint, an inner central pipe and an outer central pipe, a rubber cylinder, a setting and unsetting mechanism and a lower joint. The inner central pipe is inserted in the inner step of the outer central pipe, and the outside of the inner central pipe is sleeved with an anchor cone which has an upper end thread connected with the pressing joint and the lower end connected with the outer central pipe via a middle joint. A spring and a well-washing piston are arranged between the middle joint and the anchor cone. The lower end of the outer central pipe is in thread connection of the lower joint, and the outer central pipe is sleeved with the rubber cylinder, a compressing connecting sleeve and the setting and unsetting mechanism in sequence. The utility model can carry out counter well-washing. The packer can be applied with a supportive slip after provided with an anchor, and the bidirectional anchored packer has increased sealing performance.
Description
The utility model relates to the mechanical compression type packer in a kind of field produces, be specially adapted to oil-water well profile control, change stifled, acidifying and pressure break.
Oil field mechanical compression type packer commonly used is the Y221-114 type at present, and there is following shortcoming in use in this packer: 1, this packer does not have the well-flushing passage, and in time anti-flushing well causes down-hole accident or construction failure easily; 2, this packer relies on tubing string weight to set, and one-way slip supports, thus packer to bear down the pressure reduction ability little; 3, when bearing down pressure reduction when higher, must with the supporting use of hydraulic anchor, make construction technology complicated; 4, owing to the influence of fluctuation or the effect of fluctuating load of being under pressure, packer produces wriggling, causes packing to lose efficacy.
The purpose of this utility model is exactly the shortcoming that overcomes prior art, and a kind of high pressure squeeze packer is provided.
The purpose of this utility model is achieved in that the high pressure squeeze packer is by pressed joint, inner central tube, exterior central tube, packing element, seat is separated sealing mechanism, lower contact is formed, seat is separated sealing mechanism and is comprised slips, centralizer, inner central tube is inserted on the interior step of exterior central tube, be with the anchor cone body in the outside of inner central tube, the anchor cone body is provided with anchor fluke, spring, pressing plate, the bottom of anchor cone body has pressure guide hole, the upper end screw thread of anchor cone body is connected with pressed joint, the lower end of anchor cone body is connected by transition joint with exterior central tube, between transition joint and anchor cone body, be provided with spring and well-flushing piston, the lower end of exterior central tube is threaded with lower contact, on exterior central tube, be with packing element successively, compression adapter sleeve and seat are separated sealing mechanism, have pressure guide hole on compression adapter sleeve and the corresponding position of exterior central tube.
The utility model compared with prior art has following advantage: 1, increased well-flushing mechanism, form the anti-flushing well passage in packer, can carry out anti-flushing well; 2, on packer, be provided with the anchor body, it and the supporting use of supporting slip, the bidirectionally anchoring packer has improved the sealing performance of packer.
Below in conjunction with accompanying drawing utility model is further described:
Fig. 1, high pressure squeeze packer structural representation.
Among the figure: 1-pressed joint, 2-anchor cone body, 3-inner central tube, 4-anchor fluke, 5-spring,
6-pressing plate, 7-spring, 8-well-flushing piston, 9-transition joint, 10-exterior central tube,
11-packing element, 12-pressure guide hole, 13-compression adapter sleeve, 14-pressure guide hole, 15-slips,
16-centralizer, 17-lower contact.
The high pressure squeeze packer is by pressed joint 1, inner central tube 3, exterior central tube 10, packing element 11, seat is separated sealing mechanism, lower contact 17 is formed, seat is separated sealing mechanism and is comprised slips 15, centralizer 16, inner central tube 3 is inserted on the interior step of exterior central tube 10, be with anchor cone body 2 in the outside of inner central tube 3, anchor cone body 2 is provided with anchor fluke 4, spring 5, pressing plate 6, the bottom of anchor cone body 2 has pressure guide hole, the upper end screw thread of anchor cone body 2 is connected with pressed joint 1, pressed joint 1 is fixing with inner central tube 3, the lower end of anchor cone body 2 is connected by transition joint 9 with exterior central tube 10, between transition joint 9 and anchor cone body 2, be provided with spring 7 and well-flushing piston 8, the lower end of exterior central tube 10 is threaded with lower contact 17, on exterior central tube 10, be with packing element 11 successively, compression adapter sleeve 13 and seat are separated sealing mechanism, have pressure guide hole 12 on compression adapter sleeve 13 and the exterior central tube 10 corresponding positions, 14.
Being used for high pressure squeeze note technology with packer below is that example elaborates to the utility model: the packer that is up to the standards is arrived design attitude as requested down, by behind the required seating sealing height upper lifting pipe post, rotate 15 ° of tubing strings, transfer tubing string then.Rely on the frictional force of centralizer 16 and sleeve pipe, slips 15 is strutted the card jail on sleeve pipe; Simultaneously, pressed joint 1, anchor cone body 2, center tap 9, descending compression packing element 11 together make packing element 11 diameters become big, the packing oil sets annular space.During work, pressure in the oil pipe is passed to packing element 11 following oil sets annular spaces from pin, hydraulic pressure is again through pressure guide hole 14 and 12, annular space by between the inside and outside central tube 3,10 enters in the anchor cone body 2, under the effect of hydraulic pressure, anchor fluke 4 compression springs 5, and being pushed to internal surface of sleeve pipe, card is firm on internal surface of sleeve pipe, fixedly tubing string.After the release, anchor cone body 2 internal and external pressure balances, under the effect of spring 5, anchor fluke 4 is inwardly regained unfreezing, and tubing string is removed grappling.Anchor cone body 2 does not directly contact with working solution, prevents that impurity or blocking agent that working solution carries from depositing in anchor cone body 2, and anchor fluke 4 can be regained smoothly, avoids deblocking difficulty or anchor fluke to damage.
During well-flushing, squeeze into flushing fluid from the oil jacket annular space, flushing fluid acts on well-flushing piston 8 through the pressure guide hole of anchor cone body 2, well-flushing piston 8 compression springs 7, the well-flushing passage is opened, the annular space that liquid forms through inner central tube 3, exterior central tube 10, flow out from pressure guide hole 12 and 14, return to the oil pipe inner chamber through the tubing string bottom again, behind well head, enter the station, realize anti-flushing well.After the release, the oil jacket pressure balance, well-flushing piston 8 is closed the well-flushing passage under the effect of spring 7.
When needing deblocking, bleed off tubing pressure, the oil jacket pressure balance, under the effect of spring 5, anchor fluke 4 is regained unfreezing, and tubing string is removed grappling.The upper lifting pipe post, pressed joint 1, anchor cone body 2, transition joint 9 are up together, and packing element 11 is regained deblockings, and slips 15 is also just regained unfreezing.
Claims (1)
1, a kind of high pressure squeeze packer is by pressed joint (1), inner central tube (3), exterior central tube (10), packing element (11), seat is separated sealing mechanism, lower contact (17) is formed, seat is separated sealing mechanism and is comprised slips (15), centralizer (16), it is characterized in that: inner central tube (3) is inserted on the interior step of exterior central tube (10), be with anchor cone body (2) in the outside of inner central tube (3), anchor cone body (2) is provided with anchor fluke (4), spring (5), pressing plate (6), the bottom of anchor cone body (2) has pressure guide hole, the upper end screw thread of anchor cone body (2) is connected with pressed joint (1), the lower end of anchor cone body (2) is connected by transition joint (9) with exterior central tube (10), between transition joint (9) and anchor cone body (2), be provided with spring (7) and well-flushing piston (8), the lower end of exterior central tube (10) is threaded with lower contact (17), on exterior central tube (10), be with packing element (11) successively, compression adapter sleeve (13) and seat are separated sealing mechanism, have pressure guide hole (12) on compression adapter sleeve (13) and the corresponding position of exterior central tube (10), (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01221500 CN2490313Y (en) | 2001-04-27 | 2001-04-27 | High-pressure squeezing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01221500 CN2490313Y (en) | 2001-04-27 | 2001-04-27 | High-pressure squeezing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490313Y true CN2490313Y (en) | 2002-05-08 |
Family
ID=33638731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01221500 Expired - Fee Related CN2490313Y (en) | 2001-04-27 | 2001-04-27 | High-pressure squeezing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490313Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828732A (en) * | 2011-06-15 | 2012-12-19 | 中国石油天然气股份有限公司 | Two-stage two-section separate-injection pipe column capable of back-flushing well and protected by insert seal sleeve and separate-injection method of two-stage two-section separate-injection pipe column |
| CN110145273A (en) * | 2019-04-29 | 2019-08-20 | 国际 | A kind of oil field packer |
| CN111594092A (en) * | 2020-05-21 | 2020-08-28 | 山东虎力机械有限公司 | Packer backwashing use method |
| CN114961629A (en) * | 2022-02-15 | 2022-08-30 | 上海勤源液压技术有限公司 | Protection piece and protection architecture of packer packing element |
-
2001
- 2001-04-27 CN CN 01221500 patent/CN2490313Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828732A (en) * | 2011-06-15 | 2012-12-19 | 中国石油天然气股份有限公司 | Two-stage two-section separate-injection pipe column capable of back-flushing well and protected by insert seal sleeve and separate-injection method of two-stage two-section separate-injection pipe column |
| CN102828732B (en) * | 2011-06-15 | 2015-09-23 | 中国石油天然气股份有限公司 | Two-stage two-segment back-washing well inserting seal sleeve protected separate injection tubing string and dispensing method thereof |
| CN110145273A (en) * | 2019-04-29 | 2019-08-20 | 国际 | A kind of oil field packer |
| CN110145273B (en) * | 2019-04-29 | 2020-02-04 | 大庆丹诺石油科技开发有限公司 | Packer for oil field |
| CN111594092A (en) * | 2020-05-21 | 2020-08-28 | 山东虎力机械有限公司 | Packer backwashing use method |
| CN114961629A (en) * | 2022-02-15 | 2022-08-30 | 上海勤源液压技术有限公司 | Protection piece and protection architecture of packer packing element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |