CN203626635U - Casing connection guiding device - Google Patents
Casing connection guiding device Download PDFInfo
- Publication number
- CN203626635U CN203626635U CN201320675399.4U CN201320675399U CN203626635U CN 203626635 U CN203626635 U CN 203626635U CN 201320675399 U CN201320675399 U CN 201320675399U CN 203626635 U CN203626635 U CN 203626635U
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- CN
- China
- Prior art keywords
- casing
- well
- connection guiding
- oil
- string
- 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 a casing connection guiding device, and belongs to the technical field of well repair tools for carrying out righting and connection guiding on a casing fallen into a well when oil field workover treatment is carried out. The casing connection guiding device is composed of a casing reducing connector, a connection guiding pipe and a casing milling head. The upper end and the lower end of the casing reducing connector are provided with connecting threads, the casing reducing connector is in threaded connection with the connection guiding pipe, and the casing milling head is welded on the lower portion of the connection guiding pipe. The casing connection guiding device has the advantages that obstructions on the upper portion of an oil-string casing fallen into a well and in annular clearance of the side face of the oil-string casing can be cleaned, a well descending tool can enter the inner cavity of the casing smoothly through a casing top, righting can be carried out on the casing fallen into the well, the annular clearance of the oil-string casing and an intermediate casing is perfected, construction requirements of drilling, salvaging, cement injecting and other procedures are met, the requirements for processing the complex well mouth recovery and control problems, emerged when the oil-string casing is damaged, of long-stopped wells by light overhaul operation can be met, operation is convenient, and operation cost is saved.
Description
Technical field
The utility model relates to a kind of sleeve pipe leading device, while belonging to oil well repairing operation, the sleeve pipe of the well that falls is carried out to righting and draws the workover tool technical field connecing.
Background technology
Oil field part length is stopped well due to remote and stopping production all the year round, there will be well head to be cut, cause production string and the oil pipe problems such as well that fall, in the time that light maintenance operation is processed, because of the production string well that falls, cannot well head and preventer be installed according to normal procedure, and the well production string that falls is not placed in the middle, be often positioned at protective casing one side, in well, there are fragment of brick, sandstone the like waste to bury top of fish simultaneously, cause fishing tool to be difficult to enter production string inner chamber, make a trip and be prone to card, hang phenomenon.At present this type of well recovered and control, generally needing upper overhaul salvaging, take cover and could solve, operating expenses is high, the cycle is long.
Summary of the invention
The purpose of this utility model is to process the complicated long well that stops and be cut because of well head in order to overcome in existing light maintenance operation technique, well head that well occurs recovers and controls a difficult problem to cause production string to fall, provide a kind of can meet in oil well repairing operation, the casing that falls is carried out to righting and draws the combination tool connecing.
The utility model by annular tube reducer union, draw adapter, cover milling head form.Annular tube reducer union upper/lower terminal is connecting thread, annular tube reducer union with draw take over be threaded; Cover milling head is welded on the bottom of drawing adapter.
The beneficial effects of the utility model are to clear up well production string top and side annular plug thing, make that lower well tool is smooth and easy enters cannula cavity by sleeve pipe top of fish, and the casing that falls is carried out to righting, improve production string and protective casing annular space, meet operation construction requirements such as creeping into, salvage, note ash, can meet light maintenance operation and process the difficult problem that the complicated long well head that stops occurring when well destroys because of production string recovers and controls, easy to operate, save operating cost.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
The utility model by annular tube reducer union 1, draw take over 2, cover milling head 3 form.Annular tube reducer union 1 upper/lower terminal is connecting thread 4,5, and annular tube reducer union 12 is threaded with drawing to take over; Cover milling head 3 is welded on and draws the bottom of taking over 2.
On described annular tube reducer union 1, screw thread 4, lower screw thread 5 coincide with corresponding casing coupling screw thread.
Described adapter 2 internal diameters that draw are greater than production string external diameter.
In the time that oil-water well is carried out to light maintenance operation, the upper screw thread 4 of annular tube reducer union 1 of the present utility model is connected with the oil pipe of going into the well, descending while being hampered, rotation tubing string, take over the cover milling head 3 of 2 bottoms by drawing and clear up well production string top and outer annular space obstruction, production string is entered and draw the inner chamber of taking over 2, production string is played to righting effect placed in the middle, simultaneously, the lower screw thread 5 of annular tube reducer union 1 is by being connected with protective casing box cupling, remove the oil pipe being connected with annular tube reducer union 1, can well head and preventer be installed by normal procedure, meeting lower well tool smooth and easyly in taking over creeps into by production string top of fish from drawing, the job executions such as salvaging, thereby complete well head control and righting production string object placed in the middle.
Claims (3)
1. a sleeve pipe leading device, by annular tube reducer union (1), draw adapter (2), cover milling head (3) form, it is characterized in that: annular tube reducer union (1) upper/lower terminal is connecting thread, annular tube reducer union (1) with draw adapter (2) and be threaded; Cover milling head (3) is welded on the bottom of drawing adapter (2).
2. sleeve pipe leading device according to claim 1, is characterized in that: the upper screw thread (4) of described annular tube reducer union (1), lower screw thread (5) coincide with corresponding casing coupling screw thread.
3. sleeve pipe leading device according to claim 1 and 2, is characterized in that: described adapter (2) internal diameter that draws is greater than production string external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675399.4U CN203626635U (en) | 2013-10-29 | 2013-10-29 | Casing connection guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675399.4U CN203626635U (en) | 2013-10-29 | 2013-10-29 | Casing connection guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626635U true CN203626635U (en) | 2014-06-04 |
Family
ID=50813124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320675399.4U Expired - Fee Related CN203626635U (en) | 2013-10-29 | 2013-10-29 | Casing connection guiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587854A (en) * | 2017-08-09 | 2018-01-16 | 胜利油田华滨实业有限公司石油机械滨州分公司 | Horizontal well change casing technique |
-
2013
- 2013-10-29 CN CN201320675399.4U patent/CN203626635U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587854A (en) * | 2017-08-09 | 2018-01-16 | 胜利油田华滨实业有限公司石油机械滨州分公司 | Horizontal well change casing technique |
| CN107587854B (en) * | 2017-08-09 | 2020-01-14 | 胜利油田华滨实业有限公司井下作业维修分公司 | Horizontal well casing pipe replacing process |
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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: 20140604 Termination date: 20141029 |
|
| EXPY | Termination of patent right or utility model |