CN201262045Y - Hydraulic back-off sub used for oil well water block - Google Patents
Hydraulic back-off sub used for oil well water block Download PDFInfo
- Publication number
- CN201262045Y CN201262045Y CNU2008200909353U CN200820090935U CN201262045Y CN 201262045 Y CN201262045 Y CN 201262045Y CN U2008200909353 U CNU2008200909353 U CN U2008200909353U CN 200820090935 U CN200820090935 U CN 200820090935U CN 201262045 Y CN201262045 Y CN 201262045Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- pin
- connector
- sub
- oil pipe
- 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 relates to the oilfield mechanical water plugging field, and belongs to a hydraulic release connector used for water plugging in an oilfield, which solves the problem so as to realize the release without needing a ball injection and reversing manner, and comprises an upper connector 1, a central tube 2, a pin bolt 3, a sliding bush 4, a closing piece 5, an O-typed ring 6 and a lower connector 7, wherein, the upper end of the upper connector 1 is connected with the central tube 2 through the closing piece 5; the sliding bush 4 is connected with the central tube 2 through the pin bolt 3; and the lower connector 7 is connected with the central tube 2 through the pin bolt 3. The hydraulic release connector has the advantages of simple operation, etc., is convenient to connect with an oil pipe and other tools, and needs no ball injection.
Description
Technical field: the utility model relates to oilfield machinery water blockoff field, belongs to a kind of hydraulic pressure back-off sub that is used for oilwell water shutoff.
Background technology: along with the development of water pack off technology, the back-off sub of ball-throwing type and reverse buckling type back-off sub can not be satisfied construction requirement fully, adopt the pitching mode of building the pressure to give up, being prone to steel ball when using in high-inclination directional well and horizontal well can not seal and put in place, cause and to give up, and some completion tubular string can not adopt the back-off operating type of giving up because of not allowing reasons such as rotation, brought very big trouble to construction.At this situation, developed the hydraulic pressure back-off sub, its construction safety is a kind of reliable hydraulic releasing tool.Need not back-off or pitching, simple to operate, avoided steel ball not seal and put in place, the defective that can not give up.
Summary of the invention: the purpose of this utility model has only provided to need to suppress by oil pipe and can realize that joint gives up, and does not need pitching and back-off mode to realize a kind of hydraulic pressure back-off sub that is used for oilwell water shutoff of giving up.
The utility model mainly is made up of top connection, central tube, pin, sliding sleeve, lock dog, O type circle, lower contact.
Wherein the top connection upper end is connected by lock dog with central tube, and sliding sleeve is connected with central tube by pin, and lower contact is connected with central tube by pin.
Top connection upper end and lower contact lower end all adopt 2
7/8UPTBG oil pipe round thread.
Compared with the prior art the utility model has following advantage:
1, upper binding head upper end and lower union joint lower end all adopt 2
7/8UPTBG oil pipe round thread conveniently is connected with oil pipe and other instruments.
2, adopt oil pipe to suppress and make the pin of giving up cut off mode, make the disengagement of top connection and central tube reach the purpose of giving up, need not pitching, simple to operate, overcome the completion tubular string and can not adopt the give up mode of operation of back-off because of not allowing to rotate reason.
Description of drawings: Fig. 1 is the utility model structure diagram.
The specific embodiment: mainly form by top connection 1, central tube 2, pin 3, sliding sleeve 4, lock dog 5, O type circle 6, lower contact 7.
Wherein top connection 1 upper end is connected by lock dog 5 with central tube 2, and sliding sleeve 4 is connected with central tube 2 by pin 3, and lower contact 7 is connected with central tube 2 by pin 3.
Top connection 1 upper end and lower contact 7 lower ends all adopt 2
7/8UPTBG oil pipe round thread conveniently is connected with oil pipe and other instruments.
During on-the-spot the use, when giving up tubing string after projected depth, turn on pump adds liquid in oil pipe, when pressure reached 20Mpa, pin 3 was cut off, and sliding sleeve 4 is descending to be contacted with lower contact 7, lock dog 5 enters in sliding sleeve 4 grooves, and top connection 1 is thrown off with central tube 2, on carry promptly and finish-give up.
Claims (2)
1, a kind of hydraulic pressure back-off sub that is used for oilwell water shutoff, it is characterized in that: it mainly is made up of top connection (1), central tube (2), pin (3), sliding sleeve (4), lock dog (5), O type circle (6), lower contact (7), wherein top connection (1) upper end is connected by lock dog (5) with central tube (2), sliding sleeve (4) is connected with central tube (2) by pin (3), and lower contact (7) is connected with central tube (2) by pin (3).
2, a kind of hydraulic pressure back-off sub that is used for oilwell water shutoff according to claim 1 is characterized in that: described upper binding head (1) upper end and lower union joint (7) lower end all adopt 2
7/8UPTBG oil pipe round thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200909353U CN201262045Y (en) | 2008-09-19 | 2008-09-19 | Hydraulic back-off sub used for oil well water block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200909353U CN201262045Y (en) | 2008-09-19 | 2008-09-19 | Hydraulic back-off sub used for oil well water block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262045Y true CN201262045Y (en) | 2009-06-24 |
Family
ID=40808518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200909353U Expired - Fee Related CN201262045Y (en) | 2008-09-19 | 2008-09-19 | Hydraulic back-off sub used for oil well water block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262045Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437995A (en) * | 2013-08-13 | 2013-12-11 | 成都希能能源科技有限公司 | Connector |
| CN105422031A (en) * | 2015-12-18 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Method and device for improving hydraulic releasing working reliability |
| CN105484676A (en) * | 2016-01-12 | 2016-04-13 | 中国石油化工股份有限公司 | Layered gas injection safety joint and using method thereof |
| CN106499350A (en) * | 2016-12-01 | 2017-03-15 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| WO2018076282A1 (en) * | 2016-10-28 | 2018-05-03 | 中国石油化工股份有限公司 | Mechanical-hydraulic integrated releasing device |
| CN114183081A (en) * | 2020-09-14 | 2022-03-15 | 中国石油化工股份有限公司 | Releasing and deblocking combined hydraulic packer and operation method thereof |
-
2008
- 2008-09-19 CN CNU2008200909353U patent/CN201262045Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437995A (en) * | 2013-08-13 | 2013-12-11 | 成都希能能源科技有限公司 | Connector |
| CN103437995B (en) * | 2013-08-13 | 2016-03-23 | 成都希能能源科技有限公司 | A kind of splicer |
| CN105422031A (en) * | 2015-12-18 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Method and device for improving hydraulic releasing working reliability |
| CN105484676A (en) * | 2016-01-12 | 2016-04-13 | 中国石油化工股份有限公司 | Layered gas injection safety joint and using method thereof |
| CN105484676B (en) * | 2016-01-12 | 2018-05-01 | 中国石油化工股份有限公司 | Layered gas-injection safety joint and its application method |
| WO2018076282A1 (en) * | 2016-10-28 | 2018-05-03 | 中国石油化工股份有限公司 | Mechanical-hydraulic integrated releasing device |
| US11035180B2 (en) | 2016-10-28 | 2021-06-15 | China Petroleum & Chemical Corporation Ltd. | Mechanical-hydraulic integrated releasing device |
| CN106499350A (en) * | 2016-12-01 | 2017-03-15 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| CN106499350B (en) * | 2016-12-01 | 2018-11-30 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| CN114183081A (en) * | 2020-09-14 | 2022-03-15 | 中国石油化工股份有限公司 | Releasing and deblocking combined hydraulic packer and operation method thereof |
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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: 20090624 Termination date: 20170919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |