CN105239955A - Step-by-step unsealing anchor packer for gas well - Google Patents
Step-by-step unsealing anchor packer for gas well Download PDFInfo
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- CN105239955A CN105239955A CN201510712789.8A CN201510712789A CN105239955A CN 105239955 A CN105239955 A CN 105239955A CN 201510712789 A CN201510712789 A CN 201510712789A CN 105239955 A CN105239955 A CN 105239955A
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- pin
- cone
- spring detent
- deblocking
- slips
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Abstract
The invention relates to the technical field of oil production engineering, belongs to a step-by-step unsealing anchor packer for a gas well, solves the problems of excessive unsealing force and difficult unsealing caused by synchronous unsealing in multistage use of a traditional anchor packer, and realizes the step-by-step unsealing of the anchor packer. An upper cone 8 is in threaded connection with the lower end of a connecting sleeve 2, and is fixed with an anchor hanger 9 through a guide pin 13 and a shear pin 10; the upper end of a lower cone 14 is fixed with the anchor hanger 9 through the guide pin 13 and the shear pin 10; and the lower end of the lower cone 14 is in threaded connection with a sealing piston 15. The step-by-step unsealing anchor packer is mainly applied to the fracturing and layered development process of the gas well, and has such advantages as excellent temperature and pressure resistance and safe and reliable process.
Description
Technical field
The present invention relates to technical field of oil production engineering, belong to a kind of gas well gradually deblocking anchor packer.
Background technology
Current gas well anchor packer is the synchronous deblocking of simultaneous setting in multistage use procedure, and namely during deblocking, the deblocking pin of all packers is simultaneously stressed, there is deblocking power excessive, the problem of deblocking difficulty, does not possess the function of gradually deblocking.
Summary of the invention
The object of the invention is the deficiency overcoming above-mentioned technology, be provided in gas well a kind of gas well gradually deblocking anchor packer that can realize gradually deblocking under multistage service condition.
The present invention is achieved through the following technical solutions: it by top connection, adapter sleeve, limit body, set pin, spring detent positioning body, deblocking pin, central tube, upper cone, slips extension, shear pin, slips, tower spring, guide pin, lower cone, set piston, lock ring, pressure-bearing cover, Pressure Block, packing element, spacer ring, adjustable ring and lower contact and form, wherein top connection is threaded with adapter sleeve, spring detent positioning body is threaded with central tube, limit body, spring detent positioning body is by setting pin, deblocking pin is separately fixed at adapter sleeve inwall and top connection outer wall, spring detent positioning body upper end spring detent is positioned at the cannelure of top connection outside, upper cone is sleeved on central tube outside, upper cone is threaded with adapter sleeve lower end, upper cone is hung fixing by guide pin and shear pin and slips, slips locating hole is built with tower spring, tower spring upper end is fixed on slips and hangs in locating hole, guide pin is passed through in lower cone upper end, shear pin and slips are hung fixing, lower cone lower end with set piston thread and be connected, lower cone and pressure-bearing are fixed by shear pin between overlapping, lock ring is setting between piston and pressure-bearing overlap, pressure-bearing cover lower end is threaded with Pressure Block, packing element, spacer ring, adjustable ring is sleeved on central tube successively, lower contact and central tube, adjustable ring is threaded.
Limit body is positioned at the outside of spring detent positioning body upper end spring detent.
Spring detent positioning body upper end spring detent is inner convex platform hierarchic structure.
Deblocking stroke is provided with between upper cone interior step and central tube upper end outer steps.
The present invention compared with the prior art tool has the following advantages:
This packer construction is simple, and deblocking performance safety is reliable, and when efficiently solving the multistage use of existing anchor packer, deblocking power is excessive, the problem of deblocking difficulty.
accompanying drawing illustrates:fig. 1 is structure diagram of the present invention.
1-top connection in figure, 2-adapter sleeve, 3-limit body, 4-sets pin, 5-spring detent positioning body, 6-deblocking pin, 7-central tube, 8-upper cone, 9-slips is hung, 10-shear pin, 11-slips, 12-tower spring, 13-guide pin, 14-lower cone, 15-sets piston, 16-lock ring, 17-pressure-bearing cover, 18-Pressure Block, 19-packing element, 20-spacer ring, 21-adjustable ring, 22-lower contact.
detailed description of the invention:below in conjunction with accompanying drawing, the invention will be further described: it by top connection 1, adapter sleeve 2, limit body 3, set pin 4, spring detent positioning body 5, deblocking pin 6, central tube 7, upper cone 8, slips hang 9, shear pin 10, slips 11, tower spring 12, guide pin 13, lower cone 14, set piston 15, lock ring 16, pressure-bearing overlap 17, Pressure Block 18, packing element 19, spacer ring 20, adjustable ring 21 and lower contact 22 form, wherein top connection 1 is threaded with adapter sleeve 2, spring detent positioning body 5 is threaded with central tube 7, limit body 3, spring detent positioning body 5 is by setting pin 4, deblocking pin 6 is separately fixed at adapter sleeve 2 inwall and top connection 1 outer wall, spring detent positioning body 5 upper end spring detent is positioned at the cannelure of top connection 1 outside, it is outside that upper cone 8 is sleeved on central tube 7, upper cone 8 is threaded with adapter sleeve 2 lower end, upper cone 8 is hung 9 by guide pin 13 and shear pin 10 with slips and is fixed, slips 11 locating hole is built with tower spring 12, tower spring 12 upper end is fixed on slips and hangs in 9 locating holes, lower cone 14 upper end is by guide pin 13, shear pin 10 and slips are hung 9 and are fixed, lower cone 14 lower end with set piston 15 and be threaded, lower cone 14 and pressure-bearing are fixed by shear pin 10 between overlapping 17, lock ring 16 is setting piston 15 and pressure-bearing is overlapped between 17, pressure-bearing is overlapped 17 lower ends and is threaded with Pressure Block 18, packing element 19, spacer ring 20, adjustable ring 21 is sleeved on central tube 7 successively, lower contact 22 and central tube 7, adjustable ring 21 is threaded.
Limit body 3 is positioned at the outside of spring detent positioning body 5 upper end spring detent.
Spring detent positioning body 5 upper end spring detent is inner convex platform hierarchic structure.
Deblocking stroke is provided with between upper cone 8 interior step and central tube 7 upper end outer steps.
During onsite application, the present invention is carried by oil pipe and is lowered into precalculated position in well, and ground applies hydraulic pressure through oil pipe, acts on limit body 3 of the present invention, setting pin 4, to cut off rear limit body 3 descending, makes spring detent positioning body 5 upper end spring detent be positioned at the expanding place of limit body 3 inside.Meanwhile, hydraulic action is setting on piston 15 and Pressure Block 18, and setting piston 15, to promote lower cone 14 up, and shear pin 10 is cut off, and the seat card completing slips 11 is anchored on internal surface of sleeve pipe; The descending compression packing element 19 of Pressure Block 18 makes packing element expanded radially, lock ring 16 and set piston 15 and pressure-bearing overlap 17 between realize retaining by special thread, complete of the present invention setting.
Upper lifting pipe post during deblocking, top connection 1 is up cuts off deblocking pin 6, and top connection 1 and spring detent positioning body 5 depart from, and drive adapter sleeve 2, upper cone 8 up, deblocking slips 11 and packing element 19, complete deblocking of the present invention successively.
Claims (4)
1. a gas well gradually deblocking anchor packer, it is characterized in that: it is by top connection (1), adapter sleeve (2), limit body (3), set pin (4), spring detent positioning body (5), deblocking pin (6), central tube (7), upper cone (8), slips hangs (9), shear pin (10), slips (11), tower spring (12), guide pin (13), lower cone (14), set piston (15), lock ring (16), pressure-bearing cover (17), Pressure Block (18), packing element (19), spacer ring (20), adjustable ring (21) and lower contact (22) composition, wherein top connection (1) is threaded with adapter sleeve (2), spring detent positioning body (5) is threaded with central tube (7), limit body (3), spring detent positioning body (5) is by setting pin (4), deblocking pin (6) is separately fixed at adapter sleeve (2) inwall and top connection (1) outer wall, spring detent positioning body (5) upper end spring detent is positioned at the outside cannelure of top connection (1), it is outside that upper cone (8) is sleeved on central tube (7), upper cone (8) is threaded with adapter sleeve (2) lower end, upper cone (8) is hung (9) by guide pin (13) and shear pin (10) with slips and is fixed, slips (11) locating hole is built with tower spring (12), tower spring (12) upper end is fixed on slips and hangs in (9) locating hole, lower cone (14) upper end is by guide pin (13), shear pin (10) and slips are hung (9) and are fixed, lower cone (14) lower end with set piston (15) and be threaded, fixed by shear pin (10) between lower cone (14) and pressure-bearing cover (17), lock ring (16) is positioned at and sets between piston (15) and pressure-bearing cover (17), pressure-bearing cover (17) lower end is threaded with Pressure Block (18), packing element (19), spacer ring (20), adjustable ring (21) is sleeved on central tube (7) successively, lower contact (22) and central tube (7), adjustable ring (21) is threaded.
2. a kind of gas well gradually deblocking anchor packer according to claim 1, is characterized in that: limit body (3) is positioned at the outside of spring detent positioning body (5) upper end spring detent.
3. a kind of gas well gradually deblocking anchor packer according to claim 1, is characterized in that: spring detent positioning body (5) upper end spring detent is inner convex platform hierarchic structure.
4. a kind of gas well gradually deblocking anchor packer according to claim 1, is characterized in that: be provided with deblocking stroke between upper cone (8) interior step and central tube (7) upper end outer steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712789.8A CN105239955A (en) | 2015-10-28 | 2015-10-28 | Step-by-step unsealing anchor packer for gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712789.8A CN105239955A (en) | 2015-10-28 | 2015-10-28 | Step-by-step unsealing anchor packer for gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105239955A true CN105239955A (en) | 2016-01-13 |
Family
ID=55037749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510712789.8A Pending CN105239955A (en) | 2015-10-28 | 2015-10-28 | Step-by-step unsealing anchor packer for gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105239955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893642A (en) * | 2017-11-03 | 2018-04-10 | 蔡薇 | A kind of application method of underground work metal packer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018272A (en) * | 1975-04-07 | 1977-04-19 | Brown Oil Tools, Inc. | Well packer apparatus |
| US5131468A (en) * | 1991-04-12 | 1992-07-21 | Otis Engineering Corporation | Packer slips for CRA completion |
| CN2528926Y (en) * | 2001-10-18 | 2003-01-01 | 中国石化胜利油田有限公司采油工艺研究院 | Packer |
| CN2777183Y (en) * | 2005-01-26 | 2006-05-03 | 李静 | Hydraulic joint for releasing gadget |
| CN202531097U (en) * | 2012-05-08 | 2012-11-14 | 中国石油天然气股份有限公司 | Slip packer for gas well fracture |
| CN203175508U (en) * | 2013-01-14 | 2013-09-04 | 中国石油天然气股份有限公司 | Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
| CN203230376U (en) * | 2013-01-30 | 2013-10-09 | 中国石油天然气股份有限公司 | Compression type set packer for multi-times of setting and unsetting |
| CN103670324A (en) * | 2013-09-07 | 2014-03-26 | 中国石油集团西部钻探工程有限公司 | Claw sleeve type hydraulic packer |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
-
2015
- 2015-10-28 CN CN201510712789.8A patent/CN105239955A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018272A (en) * | 1975-04-07 | 1977-04-19 | Brown Oil Tools, Inc. | Well packer apparatus |
| US5131468A (en) * | 1991-04-12 | 1992-07-21 | Otis Engineering Corporation | Packer slips for CRA completion |
| CN2528926Y (en) * | 2001-10-18 | 2003-01-01 | 中国石化胜利油田有限公司采油工艺研究院 | Packer |
| CN2777183Y (en) * | 2005-01-26 | 2006-05-03 | 李静 | Hydraulic joint for releasing gadget |
| CN202531097U (en) * | 2012-05-08 | 2012-11-14 | 中国石油天然气股份有限公司 | Slip packer for gas well fracture |
| CN203175508U (en) * | 2013-01-14 | 2013-09-04 | 中国石油天然气股份有限公司 | Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
| CN203230376U (en) * | 2013-01-30 | 2013-10-09 | 中国石油天然气股份有限公司 | Compression type set packer for multi-times of setting and unsetting |
| CN103670324A (en) * | 2013-09-07 | 2014-03-26 | 中国石油集团西部钻探工程有限公司 | Claw sleeve type hydraulic packer |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893642A (en) * | 2017-11-03 | 2018-04-10 | 蔡薇 | A kind of application method of underground work metal packer |
| CN107893642B (en) * | 2017-11-03 | 2019-10-29 | 刘玉友 | A kind of application method of underground work metal packer |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |