CN201092845Y - Hydraulic pressure, double back-off hand type dragable bridge plug - Google Patents
Hydraulic pressure, double back-off hand type dragable bridge plug Download PDFInfo
- Publication number
- CN201092845Y CN201092845Y CNU2007200280629U CN200720028062U CN201092845Y CN 201092845 Y CN201092845 Y CN 201092845Y CN U2007200280629 U CNU2007200280629 U CN U2007200280629U CN 200720028062 U CN200720028062 U CN 200720028062U CN 201092845 Y CN201092845 Y CN 201092845Y
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- cone
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- giving
- center tube
- slips
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Abstract
The utility relates to a hydraulic and back-off double releasing type retrievable bridge plug, which comprises a packer piston (1), an upper joint (2), a salvaged joint (4), a lower center tube (5), a outer cylinder (7), a middle tube (8), a packing element (9) and a lower joint (14), wherein differences are that the upper joint (2) is connected with a right rotating wire button of an upper potion of a releasing core (3), the lower potion of the releasing core (3) is connected with a left rotating wire button of the lower center tube (5), simultaneously, the lower potion of the lower center tube (5) is connected with a lower cone (12) wire button, and the lower cone (12) is connected with a lower joint (14) wire button, the releasing core (3), the lower center tube (5) and the lower cone (12) are respectively mounted on inner of the outer cylinder (7), the packing element (9) and a slips holder (13), wherein a slip groove of the slip holder (13) is internally connected with slips (11), an upper cone (10) and a lower cone (12) are respectively connected with the upper potion of the slips (11) and the lower potion of the slips holder (13) according to lock rings, thereby, the retrievable bridge plug has the advantages that the structure is simple, the use is convenient, the using range of the tool is enlarged, reliability of the tool is improved, which can be particular applied to underground oil field extracting.
Description
Technical field:
The utility model relates to a kind of water clogging tool, particularly a kind ofly provides water pack off instrument safe and reliable, easy to use for oil field card water blockoff.
Background technology:
What at present the Y445 packer that uses of oilfield adopted is the mode that positive tube post is given up, and its major defect is only to be fit to the oil wells of gradient less than 30 degree, and directional well that gradient is bigger or the horizontal well success rate of giving up is low, causes the down-hole lock of tool drilling easily.
Summary of the invention:
The purpose of this utility model just provides and a kind of the mode of giving up is made into can positive tube post also can suppress the dragged for bridging plug of giving up, and has enlarged the scope of application of instrument and has improved the reliability of instrument.
The purpose of this utility model is achieved in that a kind of hydraulic pressure, the two releasing types of back-off can drag for bridging plug, by setting piston 1, top connection 2, fishing joint 4, lower center tube 5, urceolus 7, intervalve 8, rubber tube 9, lower contact 14 is formed, it is characterized in that described top connection 2 and give up core 3 top dextrorotation screwed connections, give up core 3 bottoms and lower center tube 5 left-handed screwed connections, lower center tube 5 bottoms and lower cone 12 screwed connections simultaneously, lower cone 12 also with described lower contact 14 screwed connections, the core 3 of giving up, lower center tube 5 and lower cone 12 are installed in urceolus 7 respectively, rubber tube 9, in the slips support 13, connect slips 11 in the slip groove of slips support 13, upper cone 10 relies on lock ring to be connected to the upper and lower of slips support 13 with lower cone 12.
An optimum implementation of the present utility model is: core 3 bottoms of giving up are connected with the ball seat 6 usefulness pins 16 of giving up, and the ball seat 6 of giving up is to be positioned at the core 3 of giving up.
The utility model compared with prior art has the following advantages:
Owing to adopted top connection 2 and given up core 3 top dextrorotation screwed connections, give up core 3 bottoms and lower center tube 5 left-handed screwed connections, lower center tube 5 bottoms and lower cone 12 screwed connections simultaneously, lower cone 12 also with described lower contact 14 screwed connections, the core 3 of giving up, lower center tube 5 and lower cone 12 are installed in urceolus 7 respectively, rubber tube 9, in the slips support 13, connect slips 11 in the slip groove of slips support 13, upper cone 10 relies on lock ring to be connected to the upper and lower of slips support 13 with lower cone 12, core 3 bottoms of giving up are connected with the ball seat 6 usefulness pins 16 of giving up, and the ball seat 6 of giving up is the forms that are positioned at the core 3 of giving up, thereby it is simple in structure, easy to use, enlarge the scope of application of instrument and improved the reliability of instrument.
Description of drawings:
Fig. 1: be the utility model concrete structure schematic diagram
Fig. 2: be Fig. 1 part enlarged drawing of giving up
1, sets piston 2, top connection 3, give up core 4, fishing joint
5, lower center tube 6, the ball seat 7 of giving up, urceolus 8, intervalve
9, rubber tube 10, upper cone 11, slips 12, lower cone
13, slips support 14, lower contact 15, pin 16, pin
The specific embodiment:
Set piston 1 and be engaged in urceolus 7 firmly, give up between core 3 and the top connection 2, fishing joint 4 is connected on the lower center tube 5 by pin, intervalve 8 tops rely on pin to be connected with urceolus 7, the top connection 2 and the core 3 top dextrorotation screwed connections of giving up, give up core 3 bottoms and lower center tube 5 left-handed screwed connections, lower center tube 5 bottoms and lower cone 12 screwed connections simultaneously, lower cone 12 also with described lower contact 14 screwed connections, the core 3 of giving up, lower center tube 5 and lower cone 12 are installed in urceolus 7 respectively, rubber tube 9, in the slips support 13, connect slips 11 in the slip groove of slips support 13, upper cone 10 relies on lock ring to be connected to the upper and lower of slips support 13 with lower cone 12, core 3 bottoms of giving up are connected with the ball seat 6 usefulness pins 16 of giving up, and the ball seat 6 of giving up is to be positioned at the core 3 of giving up.
During use, utilize tubing string can drag for bridging plug and be lowered to the oil well projected depth, the steel ball of throwing corresponding size is sitting on the ball seat 6, suppress with pump then, pressure is passed to by the central tube hand-hole and is set piston 1, force descending compression urceolus 7, compressive force passes on rubber tube 9 and the upper cone 10 step by step, like this, slips 11 tightly is stuck on the casing wall under the effect of upper cone 10 compressive forcees, rubber tube 9 seals oil sets annular spaces simultaneously, realize Seal Oil, the effect in collar-shaped space continues to suppress again pin 15 is cut off, and the ball seat 6 of giving up in the core 3 of giving up is descending, the core lance pawl of giving up like this shrinks and to break away from lower center tube 5 automatically and give up, if the ball seat 6 of giving up can not be descending be forced give up core 3 left-handed screw threads and lower center tube 5 to open and give up with regard to main story.
Claims (2)
1. hydraulic pressure, the two releasing types of back-off can drag for bridging plug, by setting piston 1, top connection 2, fishing joint 4, lower center tube 5, urceolus 7, intervalve 8, rubber tube 9, lower contact 14 is formed, it is characterized in that described top connection 2 and give up core 3 top dextrorotation screwed connections, give up core 3 bottoms and lower center tube 5 left-handed screwed connections, lower center tube 5 bottoms and lower cone 12 screwed connections simultaneously, lower cone 12 also with described lower contact 14 screwed connections, the core 3 of giving up, lower center tube 5 and lower cone 12 are installed in urceolus 7 respectively, rubber tube 9, in the slips support 13, connect slips 11 in the slip groove of slips support 13, upper cone 10 relies on lock ring to be connected to the upper and lower of slips support 13 with lower cone 12.
2. hydraulic pressure according to claim 1, the two releasing types of back-off can drag for bridging plug, it is characterized in that described core 3 bottoms of giving up are connected with the ball seat 6 usefulness pins 16 of giving up, and the ball seat 6 of giving up are to be positioned at the core 3 of giving up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280629U CN201092845Y (en) | 2007-09-13 | 2007-09-13 | Hydraulic pressure, double back-off hand type dragable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280629U CN201092845Y (en) | 2007-09-13 | 2007-09-13 | Hydraulic pressure, double back-off hand type dragable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201092845Y true CN201092845Y (en) | 2008-07-30 |
Family
ID=39900810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200280629U Expired - Fee Related CN201092845Y (en) | 2007-09-13 | 2007-09-13 | Hydraulic pressure, double back-off hand type dragable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201092845Y (en) |
Cited By (4)
| 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 |
| CN103470214A (en) * | 2013-09-13 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Multistage hydraulic bridge plug setting device |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| CN109236247A (en) * | 2018-10-18 | 2019-01-18 | 中国石油化工股份有限公司 | One kind does not stay well to be anchored sand proof packing tool |
-
2007
- 2007-09-13 CN CNU2007200280629U patent/CN201092845Y/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN103470214A (en) * | 2013-09-13 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Multistage hydraulic bridge plug setting device |
| CN103470214B (en) * | 2013-09-13 | 2016-04-06 | 中国石油集团西部钻探工程有限公司 | Multistage hydraulic bridging plug seating and sealing unit |
| CN109236247A (en) * | 2018-10-18 | 2019-01-18 | 中国石油化工股份有限公司 | One kind does not stay well to be anchored sand proof packing tool |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |