CN203239263U - Maintaining device for oil well casing - Google Patents
Maintaining device for oil well casing Download PDFInfo
- Publication number
- CN203239263U CN203239263U CN 201320243888 CN201320243888U CN203239263U CN 203239263 U CN203239263 U CN 203239263U CN 201320243888 CN201320243888 CN 201320243888 CN 201320243888 U CN201320243888 U CN 201320243888U CN 203239263 U CN203239263 U CN 203239263U
- Authority
- CN
- China
- Prior art keywords
- oil well
- head
- piston
- piston rod
- well casing
- 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 maintaining tool for casings, in particular to a maintaining device for an oil well casing. According to the technical scheme, the maintaining device for the oil well casing comprises a sliding valve, a bumper jar, a hydraulic cylinder, a piston, a piston rod, a rigid expanding head, an elastic expanding head, a guide head and a rotating joint, the sliding valve is connected to the bumper jar, the bumper jar is connected with the hydraulic cylinder, the piston is arranged in the hydraulic cylinder, the piston is connected with the piston rod, the lower portion of the piston rod is connected with the rotating joint, the rotating joint is connected with the rigid expanding head and the elastic expanding head, and the elastic expanding head is connected with the guide head. The maintaining device for the oil well casing has the advantages of being easy to use and good in maintaining effect, guaranteeing normal production of an oil well, improving production efficiency of the oil well, and reducing cost.
Description
Technical field
The utility model relates to a kind of casing repairing instrument, particularly a kind of oil well casing prosthetic device.
Background technology
In oilfield process, owing to reasons such as stratum wrigglings, often make down-hole casing generation radial deformation, so that caliber narrows down, affecting oil well normally produces, at present, the underground operation tool that the down-hole deformed casing is repaired that uses on the oil field can not effectively be controlled the size of repairing casing power when operation, downhole tool also can be stuck in the down-hole and can't pump out sometimes, be very easy to cause the operation failure, produce down-hole accident, have a strong impact on production, the well that has is clear-cut just not to be repaiied, scrap it, caused very large waste.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of oil well casing prosthetic device is provided, and uses simply, and repairing effect is good.
Its technical scheme is: comprise guiding valve, bumper jar, hydraulic cylinder, piston, piston rod, the swollen head of rigidity, elastic expansion head, guide head, swivel joint, guiding valve connects bumper jar, bumper jar connecting fluid cylinder pressure, be provided with piston in the described hydraulic cylinder, piston connects piston rod, underpart of the piston rod connects swivel joint, and swivel joint connects the swollen head of rigidity and elastic expansion head, and the elastic expansion head connects guide head.
Above-mentioned guide head is provided with helical groove.
The beneficial effects of the utility model are: use simply, repairing effect is good, has guaranteed the normal production of oil well, has improved oil well production efficient, has reduced cost.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Among the upper figure: guiding valve 1, bumper jar 2, hydraulic cylinder 3, piston 4, piston rod 5, rigidity are swollen 6, elastic expansion head 7, guide head 8, swivel joint 9, helical groove 10, sleeve pipe 11.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises swollen 6 in guiding valve 1, bumper jar 2, hydraulic cylinder 3, piston 4, piston rod 5, rigidity, elastic expansion head 7, guide head 8, swivel joint 9, guiding valve 1 connects bumper jar 2, bumper jar 2 connecting fluid cylinder pressures 3, be provided with piston 4 in the described hydraulic cylinder 3, piston 4 connects piston rod 5, piston rod 5 bottoms connect swivel joint 9, and swivel joint 9 connects swollen 6 of rigidity and elastic expansion head 7, and elastic expansion head 7 connects guide head 8; Described guide head 8 is provided with helical groove 10.
During use, this device is placed in the sleeve pipe 11 of distortion, uses simply, repairing effect is good, has guaranteed the normal production of oil well, has improved oil well production efficient, has reduced cost.
Claims (2)
1. oil well casing prosthetic device, it is characterized in that: comprise guiding valve (1), bumper jar (2), hydraulic cylinder (3), piston (4), piston rod (5), the swollen head of rigidity (6), elastic expansion head (7), guide head (8), swivel joint (9), guiding valve (1) connects bumper jar (2), bumper jar (2) connecting fluid cylinder pressure (3), be provided with piston (4) in the described hydraulic cylinder (3), piston (4) connects piston rod (5), piston rod (5) bottom connects swivel joint (9), swivel joint (9) connects the swollen head of rigidity (6) and elastic expansion head (7), and elastic expansion head (7) connects guide head (8).
2. oil well casing prosthetic device according to claim 1, it is characterized in that: described guide head (8) is provided with helical groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320243888 CN203239263U (en) | 2013-05-08 | 2013-05-08 | Maintaining device for oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320243888 CN203239263U (en) | 2013-05-08 | 2013-05-08 | Maintaining device for oil well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239263U true CN203239263U (en) | 2013-10-16 |
Family
ID=49316573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320243888 Expired - Fee Related CN203239263U (en) | 2013-05-08 | 2013-05-08 | Maintaining device for oil well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608000A (en) * | 2019-11-11 | 2019-12-24 | 陕西固德石油工程有限公司 | Impact rotary reaming type centralizing nipple device |
-
2013
- 2013-05-08 CN CN 201320243888 patent/CN203239263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608000A (en) * | 2019-11-11 | 2019-12-24 | 陕西固德石油工程有限公司 | Impact rotary reaming type centralizing nipple device |
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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: 20131016 Termination date: 20140508 |