CN201874535U - Anti-drop device for pipe string of oil-water well - Google Patents
Anti-drop device for pipe string of oil-water well Download PDFInfo
- Publication number
- CN201874535U CN201874535U CN2010206462092U CN201020646209U CN201874535U CN 201874535 U CN201874535 U CN 201874535U CN 2010206462092 U CN2010206462092 U CN 2010206462092U CN 201020646209 U CN201020646209 U CN 201020646209U CN 201874535 U CN201874535 U CN 201874535U
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- CN
- China
- Prior art keywords
- slips
- rubbing device
- oil
- friction device
- water well
- 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 provides an anti-drop device for a pipe string of an oil-water well. The lower part of a cone is connected with the upper part of an inner pipe; the lower part of an upper joint of a friction device is connected with the upper part of the friction device; the lower part of the friction device is connected with the upper part of a lower joint of the friction device; the upper joint of the friction device, the friction device, and the lower joint of the friction device are sleeved outside the inner pipe; the lower parts of a plurality of slips are connected on the upper joint of the friction device through connecting pins; the plurality of slips are uniformly distributed outside the inner pipe and are surrounded by a band spring; the conical degree of the inner walls of the slips is the same as that of the lower part of the cone; a rail is arranged on the outer wall of the inner pipe; the front end of a rail pin is installed in the rail; and the rear part of the rail pin is fixed to the lower joint of the friction device. After operation, the slips can be anchored on a casing when the pipe string of the oil-water well drops, so that the pipe string of the oil-water well does not continue to drop; the fishing work load is reduced; and damage to the pipe string and tools due to the high-speed drop of the pipe string of the oil-water well is avoided; therefore, the anti-drop device has obvious economic benefits.
Description
Technical field
The utility model relates to the downhole tool that a kind of oilfield oil well is used, and is a kind of oil-water well tubing string anti-drop device.
Background technology
In the oil-extracting and water-injecting process, fall into the accident in shaft bottom after disconnected the taking off of frequent generation oil pipe, because oil pipe is connecting various downhole tools, oil pipe falls into the damage that downhole tool can be caused in the shaft bottom at a high speed, and the downhole tool appearance and size that has is bigger, falls in the well to salvage very difficultly, also can salvage failure sometimes, oil-water well is scrapped, caused the tremendous economic loss.Fall into the shaft bottom for after preventing that oil pipe is disconnected and taking off, once designed and fell into the shaft bottom after some devices prevent that oil pipe is disconnected and take off, as Chinese patent application 01203266.2 " oil pipe anti-drop device ", the product that the technical scheme that provides according to this patent the is designed action midway that occurred going into the well when using at the scene, make the situation that oil pipe is anchored in the operation process, can not reset after this patented product grappling, can only up carry, can not be toward transferring, cause under the oil pipe not in place, oil pipe and the downhole tool that has been lowered to all can only be proposed heavily down, present this product does not use at the scene.
Summary of the invention
The purpose of this utility model provides a kind of oil-water well tubing string anti-drop device, overcomes the deficiencies in the prior art, and the oil-water well tubing string is disconnected not to fall after taking off, and avoids underground equipment to be damaged, and is convenient to salvage the oil-water well tubing string after disconnected the taking off.
The purpose of this utility model is achieved in that and comprises cone, slips, garter spring, connecting pin, the rubbing device top connection, rubbing device, interior pipe, the rubbing device lower contact, track pin, the cone bottom is connected with interior pipe top, rubbing device top connection bottom is connected with rubbing device top, the rubbing device bottom is connected with rubbing device lower contact top, the rubbing device top connection, rubbing device, the rubbing device lower contact is sleeved on outside the interior pipe, the slips bottom is connected in the rubbing device top connection by connecting pin, slips has several, several slips evenly distribute and are installed in outside the interior pipe, several slips are surrounded by garter spring, the inwall tapering is identical with cone bottom tapering on the slips, track is arranged on the outer wall of inner tube, the track pin front end is installed in the track, and the track pin rear portion is fixed in the rubbing device lower contact.
The beneficial effects of the utility model are: after operation, slips can be anchored on the sleeve pipe when the oil-water well tubing string falls, make the oil-water well tubing string not continue to fall, reduce the salvage amount, avoid the oil-water well tubing string to fall to causing tubing string and tool damage at a high speed, therefore, the utlity model has remarkable economic efficiency.
Description of drawings
Fig. 1 is complete section figure of the present utility model.
The specific embodiment
As shown in the figure, the utility model comprises cone 1, slips 2, garter spring 3, connecting pin 4, rubbing device top connection 5, rubbing device 6, interior pipe 7, rubbing device lower contact 8, track pin 9, cone 1 bottom is connected with interior pipe 7 tops, rubbing device top connection 5 bottoms are connected with rubbing device 6 tops, rubbing device 6 bottoms are connected with rubbing device lower contact 8 tops, rubbing device top connection 5, rubbing device 6, manage outside 7 in rubbing device lower contact 8 is sleeved on, slips 2 bottoms are connected in the rubbing device top connection 5 by connecting pin 4, slips 2 has several, several slips 2 are managed outside 7 in evenly distributing and being installed in, several slips 2 are surrounded by garter spring 3, garter spring 3 stressed back diameters can increase, several slips 2 surround angle when not opening can be near 360 °, it is big with the sleeve pipe contact area to open the back, the inwall tapering is identical with cone 1 bottom tapering on the slips 2, inwall cooperates with cone 1 outer wall on the slips 2, on interior pipe 7 outer walls track 10 is arranged, track 10 is close with Y211 packer track, track pin 9 front ends are installed in 10 li on track, track pin 9 front ends can be in 10 li motions of track, track pin 9 rear portions are fixed in the rubbing device lower contact 8, and track pin 9 is with rubbing device 6 motions.
The utility model is connected to oil-water well tubing string lower end, down behind design attitude, on put and put tubing string, because rubbing device 6 is close to sleeve pipe, and certain frictional force is arranged between the sleeve pipe, on put that rubbing device 6 can keep motionless when putting tubing string, thereby can make track pin 9 on 10 li on track from short track commutation to long track, sit the well head completion then.When the oil-water well tubing string is disconnected when coming off well, frictional force between rubbing device 6 and the sleeve pipe makes slips 2 motionless, and cone 1, interior pipe 7 hurtle down, and the distance between slips 2 and the cone 1 is shortened, the encirclement power that slips 2 overcomes garter spring 3 is opened and is anchored on the sleeve pipe, and the oil-water well tubing string can not fall again.
Claims (1)
1. oil-water well tubing string anti-drop device, comprise cone (1), slips (2), garter spring (3), connecting pin (4), rubbing device top connection (5), rubbing device (6), interior pipe (7), rubbing device lower contact (8), track pin (9), it is characterized in that: cone (1) bottom is connected with interior pipe (7) top, rubbing device top connection (5) bottom is connected with rubbing device (6) top, rubbing device (6) bottom is connected with rubbing device lower contact (8) top, rubbing device top connection (5), rubbing device (6), rubbing device lower contact (8) is sleeved on outside the interior pipe (7), slips (2) bottom is connected in the rubbing device top connection (5) by connecting pin (4), slips (2) has several, several slips (2) evenly distribute and are installed in outside the interior pipe (7), several slips (2) are surrounded by garter spring (3), it is identical with cone (1) bottom tapering that slips (2) is gone up the inwall tapering, on interior pipe (7) outer wall track (10) is arranged, track pin (9) front end is installed in track (10) lining, and track pin (9) rear portion is fixed in the rubbing device lower contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206462092U CN201874535U (en) | 2010-11-25 | 2010-11-25 | Anti-drop device for pipe string of oil-water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206462092U CN201874535U (en) | 2010-11-25 | 2010-11-25 | Anti-drop device for pipe string of oil-water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874535U true CN201874535U (en) | 2011-06-22 |
Family
ID=44162458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206462092U Expired - Fee Related CN201874535U (en) | 2010-11-25 | 2010-11-25 | Anti-drop device for pipe string of oil-water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514519A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Breaking and falling object preventing device for oil well pipe column |
| CN104632133A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Backflow-prevention type oil well pipe column anti-falling device and process method |
-
2010
- 2010-11-25 CN CN2010206462092U patent/CN201874535U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514519A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Breaking and falling object preventing device for oil well pipe column |
| CN104514519B (en) * | 2013-09-29 | 2017-05-31 | 中国石油天然气股份有限公司 | The disconnected de- resistance junk device of oil well pipe |
| CN104632133A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Backflow-prevention type oil well pipe column anti-falling device and process method |
| CN104632133B (en) * | 2013-11-13 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of reverse-filling formula oil well pipe falling proof device and process |
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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: 20110622 Termination date: 20121125 |