CN102493777B - Hydraulic release plugging device - Google Patents
Hydraulic release plugging device Download PDFInfo
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- CN102493777B CN102493777B CN201110415657.0A CN201110415657A CN102493777B CN 102493777 B CN102493777 B CN 102493777B CN 201110415657 A CN201110415657 A CN 201110415657A CN 102493777 B CN102493777 B CN 102493777B
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- joint
- piston
- hole
- slipway
- slide block
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Abstract
The invention discloses a hydraulic release plugging device. The hydraulic release plugging device comprises a pull rod which is in threaded connection with a nut; a sliding block sleeve is sleeved on the pull rod below the nut; the tail end of the pull rod is in threaded connection with a slide way body; three sliding blocks are arranged on the outer wall of the slide way body; a clamp block at the upper end of each sliding block is embedded into a hole at the lower end of the sliding block sleeve; the lower end of the slide way body is provided with a baffle ring; the lower part of the slide way body is in threaded connection with a piston; a pressing block A, a rubber cylinder, and a pressing block B are sequentially sleeved on the outer wall of the piston; the lower part of the pressing block B is in threaded connection with a short connection part; the piston is connected with the short connection part through a pin; a joint is sleeved on the outer wall of the piston; a ring cavity is formed between the piston and the joint; the joint is provided with a through hole; the through hole in the joint is communicated with the ring cavity between the piston and the joint; the upper end face of the joint is contacted with the lower end face of the short connection part; the lower end of the joint is in threaded connection with a hydraulic cylinder foundation; the bottom face of the hydraulic cylinder foundation is in threaded connection with a bottom plug; and a seal ring is arranged between the bottom plug and the hydraulic cylinder foundation. The tool can plug any position of an oil pipe through a central hole of downhole tools such as a packer and the like.
Description
Technical field
The present invention relates to the interior jet-preventing tool of dedicated pipe in a kind of oilfield oil well Operating Pressure, for controlling liquid in former well casing column jecket, belong to a kind of hydraulic release plugging device.
Background technology
Along with the exploitation in oil field, Operating Pressure as an important stable yields, increase oil tech and promote in oil field.During Operating Pressure, the operation device under pressure master is the pressure of controlling the oil jacket annular space, and in the pipe of former well casing post, control is to realize by the former well casing post of shutoff oil pipe.At present, in pipe, control tool is the tubing plug that diameter is larger mostly, can only shutoff pipe string of oil-water well instrument section on, the tubing string under the instrument section can't be effectively controlled.
Summary of the invention
In order to overcome the problem existed in background technology, the invention provides a kind of hydraulic release plugging device, this instrument can the general water injection string oil pipe of shutoff optional position.
The technical solution used in the present invention is: this hydraulic release plugging device, comprise pull bar, nut has been threaded on described pull bar, on the pull bar of nut below, cover has slide block set, the end thread of pull bar is connected with slipway, the slipway outer wall is provided with 3 slide blocks, the inwall of slide block is provided with groove vertically, the slipway outer wall is evenly distributed with 3 shoulders that match with groove on slide block vertically, the fixture block of the upper end of slide block is embedded in the hole of slide block set lower end, the lower end of slipway is provided with baffle ring, the lower thread of slipway is connected with piston, piston outer wall overlaps successively briquetting A, packing element, briquetting B, briquetting B lower thread connects short circuit, piston is connected by pin with short circuit, on piston outer wall, cover has joint, between piston and joint, ring cavity is arranged, have through hole on joint, through hole on joint communicates with the ring cavity between piston and joint, touch mutually with the lower surface of short circuit the upper surface of joint, the joint lower end fluid cylinder base that has been threaded, the fluid cylinder base end face end that has been threaded, is stifled, be provided with sealing ring between the stifled and fluid cylinder base in the end.
The invention has the beneficial effects as follows: this instrument arrives the oil water well tube column bottom after delivery under Action of Gravity Field, relies on down-hole pressure just can set, and also can to the suitable pressure of injection in well, blanking plug be set by pump truck.This instrument can be by the centre bore of the downhole tools such as packer, and the oil pipe optional position of the general water injection string of shutoff is applied to the blank tubing tubing string and also can takes steel wire to deliver.Packing element is easy damaged not, but when down-hole pressure increases packing element self-adapting compressing also, further the shutoff oil pipe, make blanking plug work more reliable, good sealing effect.
the accompanying drawing explanation:
Fig. 1 is sectional view of the present invention.
1-pull bar in figure, the 2-nut, the 3-slide block set, the 4-slide block, the 5-slipway, the 6-baffle ring, 7-briquetting A, the 8-packing element, 9-briquetting B, the 10-short circuit, the 11-collar, the 12-pin, the 13-piston, the 14-joint, the 15-sealing ring, 16-fluid cylinder base, stifled at the bottom of 17-.
the specific embodiment:
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1, this hydraulic release plugging device comprises pull bar 1, nut 2 has been threaded on described pull bar 1, on the pull bar 1 of nut 2 belows, cover has slide block set 3, slide block set 3 can slide along pull bar 1 outer wall, the end thread of pull bar 1 is connected with slipway 5, slipway 5 outer walls are provided with 3 slide blocks 4, the inwall of slide block 4 is provided with groove vertically, slipway 5 outer walls are evenly distributed with 3 shoulders that match with groove on slide block 4 vertically, slide block 4 can be free to slide along slipway 5, the fixture block of the upper end of slide block 4 is embedded in the hole of slide block set 3 lower ends, the 4 limited location effects of 3 pairs of slide blocks of slide block set, the lower end of slipway 5 is provided with baffle ring 6, the lower thread of slipway 5 is connected with piston 13, piston 13 outer walls overlap successively briquetting A 7, packing element 8, briquetting B 9, the descending slipway 5 extruding packing elements 8 of piston 13 are realized setting, briquetting B 9 lower thread connect short circuit 10, on the outer wall of the chamber inner carrier 13 of short circuit 10, cover has collar 11, piston 13 is connected by pin 12 with short circuit 10, on piston 13 outer walls, cover has joint 14, between piston 13 and joint 14, ring cavity is arranged, have through hole on joint 14, through hole on joint 14 communicates with the ring cavity between piston 13 and joint 14, down-hole liquid under pressure, enter into the ring cavity between piston 13 and joint 14 by the through hole on joint 14, lower push piston 13 shear pins 12, compressed and the expansion plugging oil pipe inner chamber of packing element 8, touch mutually with the lower surface of short circuit 10 upper surface of joint 14, the joint 14 lower ends fluid cylinder base 16 that has been threaded, fluid cylinder base 16 bottom surfaces have been threaded at the end stifled 17, be provided with sealing ring 15 between the end stifled 17 and fluid cylinder base 16.
During work, in oil pipe in this blanking plug input well, slide block 4 slides to tube inner wall 5 times along slipway, play centralizing function, but do not stress, blanking plug drops to the precalculated position, bottom at Gravitative Loads, piston 13 is under the down-hole pressure effect, cut off pin 12, and compression fluid cylinder base bottom air, make packing element 8 compression plugged well downforce.Now, blanking plug is promoted by down-hole pressure, make slide block 4 be fixed on instrument firmly and need the tubing string of shutoff position, can in tubing string, not fly out, also can not drop to the tubing string bottom, down-hole liquid pushes away blanking plug on continuing under pressure, and it is up along slide block 4 that slipway 5 drives lower member, blanking plug is stuck in the oil pipe inner chamber, completes all setting.
Claims (1)
1. a hydraulic release plugging device, comprise pull bar (1), it is characterized in that: nut (2) has been threaded on described pull bar (1), the upper cover of the pull bar (1) of nut (2) below has slide block set (3), the end thread of pull bar (1) is connected with slipway (5), slipway (5) outer wall is provided with 3 slide blocks (4), the inwall of slide block (4) is provided with groove vertically, slipway (5) outer wall is evenly distributed with 3 shoulders that match with groove on slide block (4) vertically, the fixture block of the upper end of slide block (4) is embedded in the hole of slide block set (3) lower end, the lower end of slipway (5) is provided with baffle ring (6), the lower thread of slipway (5) is connected with piston (13), piston (13) outer wall overlaps successively briquetting A (7), packing element (8), briquetting B (9), briquetting B (9) lower thread connects short circuit (10), piston (13) is connected by pin (12) with short circuit (10), on piston (13) outer wall, cover has joint (14), between piston (13) and joint (14), ring cavity is arranged, joint has through hole on (14), through hole on joint (14) communicates with the ring cavity between piston (13) and joint (14), touch mutually with the lower surface of short circuit (10) upper surface of joint (14), joint (14) the lower end fluid cylinder base (16) that has been threaded, fluid cylinder base (16) bottom surface has been threaded at the end stifled (17), be provided with sealing ring (15) between the end stifled (17) and fluid cylinder base (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110415657.0A CN102493777B (en) | 2011-12-14 | 2011-12-14 | Hydraulic release plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110415657.0A CN102493777B (en) | 2011-12-14 | 2011-12-14 | Hydraulic release plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102493777A CN102493777A (en) | 2012-06-13 |
| CN102493777B true CN102493777B (en) | 2014-01-01 |
Family
ID=46185630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110415657.0A Active CN102493777B (en) | 2011-12-14 | 2011-12-14 | Hydraulic release plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102493777B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499985A (en) * | 2014-10-19 | 2015-04-08 | 盐城市金巨石油机械制造有限公司 | Multifunctional high-pressure oil pipe plug and use method thereof |
| CN110965957B (en) * | 2018-09-30 | 2021-09-28 | 中国石油天然气股份有限公司 | Blocking tool in oil pipe |
| CN111980619B (en) * | 2019-05-24 | 2022-07-05 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN113944443B (en) * | 2020-07-16 | 2023-12-22 | 中国石油天然气股份有限公司 | Plug device |
| CN116066011B (en) * | 2023-03-20 | 2023-06-16 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453119Y (en) * | 2000-08-24 | 2001-10-10 | 胜利石油管理局渤海钻井总公司 | Oil well tail pipe holding means of mechanical slips locus type |
| CN2846722Y (en) * | 2005-04-15 | 2006-12-13 | 辽河石油勘探局 | Track type small diameter oil pipe blanking plug |
| US7510018B2 (en) * | 2007-01-15 | 2009-03-31 | Weatherford/Lamb, Inc. | Convertible seal |
| CN101929317A (en) * | 2010-09-14 | 2010-12-29 | 马中原 | Undersize-hole oil pipe plugging device |
| CN201934055U (en) * | 2011-03-07 | 2011-08-17 | 中国石油化工股份有限公司 | Self-setting type tubing plug |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007031723A2 (en) * | 2005-09-14 | 2007-03-22 | Petrowell Limited | Packer |
-
2011
- 2011-12-14 CN CN201110415657.0A patent/CN102493777B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453119Y (en) * | 2000-08-24 | 2001-10-10 | 胜利石油管理局渤海钻井总公司 | Oil well tail pipe holding means of mechanical slips locus type |
| CN2846722Y (en) * | 2005-04-15 | 2006-12-13 | 辽河石油勘探局 | Track type small diameter oil pipe blanking plug |
| US7510018B2 (en) * | 2007-01-15 | 2009-03-31 | Weatherford/Lamb, Inc. | Convertible seal |
| CN101929317A (en) * | 2010-09-14 | 2010-12-29 | 马中原 | Undersize-hole oil pipe plugging device |
| CN201934055U (en) * | 2011-03-07 | 2011-08-17 | 中国石油化工股份有限公司 | Self-setting type tubing plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102493777A (en) | 2012-06-13 |
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