CN2595996Y - Means for blocking-up oil pipe - Google Patents
Means for blocking-up oil pipe Download PDFInfo
- Publication number
- CN2595996Y CN2595996Y CN 02251200 CN02251200U CN2595996Y CN 2595996 Y CN2595996 Y CN 2595996Y CN 02251200 CN02251200 CN 02251200 CN 02251200 U CN02251200 U CN 02251200U CN 2595996 Y CN2595996 Y CN 2595996Y
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- CN
- China
- Prior art keywords
- utility
- support body
- model
- way valve
- joint
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- 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 a plugging device for an oil pipe, which is composed of a fishing possible joint 1, a one-way valve 2, a connecting body 3, a sealing rubber cup 4, a support body 5, a releasing possible slip 6, and a scale removing knife 7. The utility model adopts a structure in which the fishing possible joint is sequentially connected with the connecting body, the support body, and the scale removing knife, and the one-way valve is connected with the fishing possible joint in the connecting body. As a result, plugging can be realized at the optional position of a pipe column. When the utility model is applied to the operation site under pressure for the maintenance of high-pressure oil wells, gas wells, and water wells, the success ratio of one-time plugging is increased, the labor strength of workers and the cost are reduced, the pollution of oil layers is reduced, the recovery ratio of crude oil is increased, and safety and reliability are offered. The utility model has the advantages of production satisfaction, environmental protection, increased work efficiency, simple structure, and easy operation and control.
Description
The utility model relates to the downhole tool that uses on a kind of oilfield, particularly a kind of tubing plug.
Typical oilfield high-pressure oil gas well maintenance Operating Pressure need not kill-job, not open flow, play lower tubular column when keeping former borehole pressure.At first must stop up oil pipe before removing, it is excessive from well head to prevent that crude oil, water pipe highly pressurised liquid from entering in the oil pipe, just can carry out other operations then, and we often adopt well killing fluid to carry out kill-job, often like this makes oil reservoir be subjected to pollution, has influenced reservoir recovery.
The purpose of this utility model is to provide a kind of tubing plug, and it plays the effect of stopping up oil pipe, and can stop up at an arbitrary position, thus guarantee high-pressure oil gas well maintenance Operating Pressure not kill-job, not open flow, play lower tubular column when keeping former borehole pressure.
The purpose of this utility model is to realize like this, it by can drag for joint (1), one way valve (2), connected body (3), sealing cup (4), support body (5), can move back slips (6), de-sludging cutter (7) is formed, can drag for joint (1) is connected successively with connected body (3), support body (5), de-sludging cutter (7), one way valve (2) is arranged in connected body (3) and can drag for joint (1) and be connected, connected body (3), support body have through hole respectively on (5), sealing cup (4) blocks support body (5) top again, can move back slips (6) and be embedded in support body (5) bottom, de-sludging cutter (7) is a cone tooth form structure.
Before going into the well, at first the moved back slips of blanking plug is put to release conditions, can be dragged for joint simultaneously and tighten, descend blanking plug then to needing stifled position, this moment, the water of blanking plug inside went out through hydrophthalmia, one way valve, orifice flow, thereby had avoided the expansion that causes sealing cup because of transferring.
After blanking plug is transferred to assigned address, can move back slips and put by carrying in the rotation, and be fixed with the card tooth to duty.Meanwhile, can drag for joint by following commentaries on classics and pour out, one way valve is closed bore closure in that spring action is next.Begin under the effect of sealing cup hydraulic pressure pressure in hydrophthalmia and hole and well of blanking plug at this moment to expand, reach the effect of sealing.
During salvaging, can drag for the joint make-up and tighten, one way valve is then opened at once, and the water in the sealing cup releases by one way valve, hole, can move back slips and is in release conditions by carrying in the rotation making then, so carry on just can be directly, proposes de-plugging in the realization.
The de-sludging cutter can be eliminated the foreign material such as greasy dirt on the tube inner wall, guarantees passing through smoothly of tubing plug.
The utility model is owing to adopted and can drag for joint and be connected successively with connected body, support body, de-sludging cutter, one way valve is arranged in connected body and can drag for the structure that joint is connected, can realize in the tubing string optional position stopping up, after being applied to high-pressure oil gas well maintenance Operating Pressure scene, improve the success rate of a shutoff, greatly reduced working strength of workers, and cost, reduce oil layer pollution, improved oil recovery factor, and safety, reliable.Not only satisfied production but also protected environment, improved operating efficiency, it is simple in structure, and operation, control are well suited for applying easily.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in the figure, the utility model by can drag for joint 1, one way valve 2, connected body 3, sealing cup 4, support body 5, can move back slips 6, de-sludging cutter 7 is formed, pin thread is that the dragged for joint 1 of left-hand thread is connected successively with connected body 3, support body 5, de-sludging cutter 7, one way valve 2 is arranged in connected body 3 and can drag for joint 1 and be connected, on connected body 3, the support body 5 through hole is arranged respectively, sealing cup 4 blocks support body 5 tops again, can move back slips 6 and be embedded in support body 5 bottoms.
After transferring to assigned address, can move back slips 3 and put by carrying in the rotation, and blanking plug be fixed with the card tooth that can move back slips to duty.Meanwhile, can drag for joint 1 and pour out by just changeing, 2 on one way valve is closed under spring action, and through hole is closed.This moment, the sealing cup 4 of blanking plug began to expand under the effect of through hole and shaft bottom water pressure, reached the effect of sealing.That is: slips is fixed, and the sealing cup sealing realizes the purpose of stopping up.
During salvaging, can drag for joint 1 make-up and tighten, 2 horse backs of one way valve are opened, and the water in the sealing cup 4 bleed off by one way valve 2, through hole, can move back slips and are in release conditions by carrying in the rotation making simultaneously, so carry on just can be directly, realize salvaging.
De-sludging cutter 7 can be eliminated the greasy dirt foreign material on the tube inner wall, guarantees passing through smoothly of tubing plug.
Claims (2)
1, a kind of tubing plug, by can drag for joint (1), one way valve (2), connected body (3), sealing cup (4), support body (5), can move back slips (6), de-sludging cutter (7) is formed, it is characterized in that: can drag for joint (1) and be connected successively with connected body (3), support body (5), de-sludging cutter (7), one way valve (2) is arranged in connected body (3) and can drag for joint (1) and be connected, connected body (3), support body have through hole respectively on (5), sealing cup (4) blocks support body (5) top again, can move back slips (6) and be embedded in support body (5) bottom.
2, tubing plug according to claim 1 is characterized in that: de-sludging cutter (7) is a cone tooth form structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251200 CN2595996Y (en) | 2002-12-13 | 2002-12-13 | Means for blocking-up oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251200 CN2595996Y (en) | 2002-12-13 | 2002-12-13 | Means for blocking-up oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2595996Y true CN2595996Y (en) | 2003-12-31 |
Family
ID=33721146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02251200 Expired - Fee Related CN2595996Y (en) | 2002-12-13 | 2002-12-13 | Means for blocking-up oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2595996Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575658C (en) * | 2006-11-03 | 2009-12-30 | 中国石油集团川庆钻探工程有限公司 | Blowout-prevention blocking device for oil pipe used in oil and gas well |
| CN102094595A (en) * | 2010-12-17 | 2011-06-15 | 中国石油集团长城钻探工程有限公司 | Totally-enclosed device for upper part of injection layer of downhole operation of high-pressure water injection well |
| CN102900385A (en) * | 2012-11-06 | 2013-01-30 | 中国石油天然气股份有限公司 | Over chuck distance steel wire operation slip plug |
| CN103722357A (en) * | 2012-10-15 | 2014-04-16 | 重庆科帆机电设备有限公司 | Fast high-pressure sealing equipment |
| CN104563959A (en) * | 2014-12-26 | 2015-04-29 | 中国石油天然气股份有限公司 | Blowout prevention valve |
-
2002
- 2002-12-13 CN CN 02251200 patent/CN2595996Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575658C (en) * | 2006-11-03 | 2009-12-30 | 中国石油集团川庆钻探工程有限公司 | Blowout-prevention blocking device for oil pipe used in oil and gas well |
| CN102094595A (en) * | 2010-12-17 | 2011-06-15 | 中国石油集团长城钻探工程有限公司 | Totally-enclosed device for upper part of injection layer of downhole operation of high-pressure water injection well |
| CN103722357A (en) * | 2012-10-15 | 2014-04-16 | 重庆科帆机电设备有限公司 | Fast high-pressure sealing equipment |
| CN102900385A (en) * | 2012-11-06 | 2013-01-30 | 中国石油天然气股份有限公司 | Over chuck distance steel wire operation slip plug |
| CN104563959A (en) * | 2014-12-26 | 2015-04-29 | 中国石油天然气股份有限公司 | Blowout prevention valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031231 Termination date: 20100113 |