CN2916111Y - Releasing dragging device - Google Patents
Releasing dragging device Download PDFInfo
- Publication number
- CN2916111Y CN2916111Y CN 200620091026 CN200620091026U CN2916111Y CN 2916111 Y CN2916111 Y CN 2916111Y CN 200620091026 CN200620091026 CN 200620091026 CN 200620091026 U CN200620091026 U CN 200620091026U CN 2916111 Y CN2916111 Y CN 2916111Y
- Authority
- CN
- China
- Prior art keywords
- dredging
- head
- fishing
- guide
- rod
- 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
A releasing dragging device used for oil-water well dredging operation comprises a upper joint(1), a dredging rod(2), a dredging head(3), a guide pin(4), a dredging pawl(5) and a guide chase head(6). The device is connected with the upper part of a dredging pipe string through screw threads. The upper joint(1) is connected with the dredging rod(2) through screw threads. The length of the dredging rod(2) is decided according to depth of dredging position. The dredging pawl(5) is connected with the dredging head(3) through the guide pin(4). Connected long and short sliding channels are arranged on the dredging pawl(5), which can slide on the guide pin(4) through the channels. The lower part of the dredging head(3) is connected with the guide chase head(6) through screw threads. The device settles present technical problems of that wells cannot be flushed because of no central hole in the device and that dredging process is stopped because of impossible backwards progression. The utility model can be widely used for oil-water well dredging operation.
Description
Technical field:
The utility model relates to the reversible fishing device that a kind of oilfield oil well down-hole fishing is used.
Background technology:
The fishing device that oilfield oil well down-hole salvaging is at present used always is varied, but salvaging for the small size downhole tool, being only limited to the slide block that can not move back drags for and gives, adopt this instrument to salvage downhole tool, though salvage effective, owing to there not being centre bore, can not flushing borehole when operation, simultaneously since slide block can not moving back property, carry motionlessly on often being hampered, cause down-hole accident.
Summary of the invention:
The utility model purpose is to provide a kind of reversible fishing device, and it has solved in the fishing that exists in the prior art can not flushing borehole, puies forward motionless problem on being hampered, and can also fishing device be withdrawed from dragging under the motionless situation.
The technical scheme that its technical problem that solves the utility model adopts is: the reversible fishing device is made up of top connection, fishing rod, fishing head, guide finger, bailer grab, guide head; In top connection with after fishing string is threaded, top connection is threaded with fishing rod, the length of fishing rod is decided according to the degree of depth of salvaging the position, bailer grab is enclosed within on the fishing head, the two connects by guide finger, be provided with the length chute that is connected on bailer grab, bailer grab can slide on guide finger by chute, and the fishing head lower end is threaded with guide head.During use this device is connected on the fishing string lower end, when tubing string down when giving allocation, because the guide head front end is spherical, be convenient to guide fishing device enter downhole tool in eye, after bailer grab in this device arrives and salvages the position, during the positive tube post of upper lifting pipe post, because the effect of friction, bailer grab is motionless, move on the guide head, its inclined-plane squeezes bailer grab outward, and guide finger is in the elongated slot position (at this moment guide finger is in the centre even the upper end of groove on the bailer grab) of bailer grab, card tooth on the bailer grab blocks the inner surface of downhole tool, and downhole tool is salvaged well; When salvaging chance card is carried to be come up, press down fishing string, move on the relative fishing head of bailer grab, at this moment guide finger is in the lower end of bailer grab upper hopper chute, and the rotation fishing string is in the short groove guide finger, on carry fishing string, fishing device can be withdrawed from downhole tool.
The new beneficial effect of this practicality is, this apparatus structure is simple, is convenient to operation, and being provided with centre bore in the device can flushing borehole, and this device can withdraw from the salvaging process.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure, 1, top connection, 2, fishing rod, 3, fishing head, 4, guide finger, 5, bailer grab, 6, guide head.
The specific embodiment:
As shown in the figure, this device is made up of top connection 1, fishing rod 2, fishing head 3, guide finger 4, bailer grab 5, guide head 6; This device is threaded in the fishing string lower end, top connection 1 is threaded with fishing rod 2, the length of fishing rod 2 is decided according to the degree of depth of salvaging the position, bailer grab 5 is enclosed within on the fishing head 3, the two connects by guide finger 4, bailer grab 5 is provided with the length chute that is connected, and bailer grab 5 can slide on guide finger 4 by chute, and fishing head 3 lower ends are threaded with guide head 6.
Claims (1)
1, a kind of reversible fishing device, by top connection (1), fishing rod (2), fishing head (3), guide finger (4), bailer grab (5), guide head (6) is formed, it is characterized in that: this device is threaded in the fishing string lower end, top connection (1) is threaded with fishing rod (2), the length of fishing rod (2) is decided according to the degree of depth of salvaging the position, bailer grab (5) is enclosed within on the fishing head (3), the two connects by guide finger (4), bailer grab (5) is provided with the length chute that is connected, bailer grab (5) can be gone up at guide finger (4) by chute and slide, and fishing head (3) lower end is threaded with guide head (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091026 CN2916111Y (en) | 2006-05-23 | 2006-05-23 | Releasing dragging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091026 CN2916111Y (en) | 2006-05-23 | 2006-05-23 | Releasing dragging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2916111Y true CN2916111Y (en) | 2007-06-27 |
Family
ID=38187020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620091026 Expired - Fee Related CN2916111Y (en) | 2006-05-23 | 2006-05-23 | Releasing dragging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2916111Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632117A (en) * | 2015-02-05 | 2015-05-20 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Mechanical pulling and running tool |
| CN110748318A (en) * | 2019-11-29 | 2020-02-04 | 中国石油化工股份有限公司 | Glass fiber reinforced plastic oil pipe fisher |
-
2006
- 2006-05-23 CN CN 200620091026 patent/CN2916111Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632117A (en) * | 2015-02-05 | 2015-05-20 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Mechanical pulling and running tool |
| CN110748318A (en) * | 2019-11-29 | 2020-02-04 | 中国石油化工股份有限公司 | Glass fiber reinforced plastic oil pipe fisher |
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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: 20070627 Termination date: 20110523 |