CN202520244U - Direct connecting type coupling-free casing - Google Patents
Direct connecting type coupling-free casing Download PDFInfo
- Publication number
- CN202520244U CN202520244U CN2012201313635U CN201220131363U CN202520244U CN 202520244 U CN202520244 U CN 202520244U CN 2012201313635 U CN2012201313635 U CN 2012201313635U CN 201220131363 U CN201220131363 U CN 201220131363U CN 202520244 U CN202520244 U CN 202520244U
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- casing
- joint
- sleeve pipe
- type coupling
- connecting type
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Abstract
The utility model discloses a direct connecting type coupling-free casing, and belongs to an oilfield operation instrument. The structure of the direct connecting type coupling-free casing is that: a casing port is formed at one end of the casing, and a casing joint is arranged at the other end of the casing; the shape of the casing port is matched with that of the casing joint; and the casing port of one casing can be in sealed connection with the casing joint of another casing through a buttress thread coupling end face. Compared with the prior art, the direct connecting type coupling-free casing has the advantages that the connecting strength can be ensured, a requirement for sealing performance can be ensured, requirements for maximum internal and external diameters of a small casing during the heavy repair sidetracking of a surface casing shaft guide well are met, and the casing has higher operational performance.
Description
Technical field
The utility model relates to a kind of oil field operation apparatus, specifically direct linkage type integral joint casing.
Background technology
Since the reform and opening-up, China's rapid economic development, increasing to demands for energy.Oil is as the important component part of the energy, and shared proportion rises rapidly and is basicly stable on certain level in China's primary energy consumption and production.
Petroleum casing pipe is that important equipment is used in oil drilling.Be mainly used in the drilling process with completion after to the support of the borehole wall, with the normal operation of whole oil well after the carrying out that guarantee drilling process and the completion.Petroleum casing pipe is a lifeline of keeping the oil well operation.Because geological conditions is different, the down-hole stress is complicated, and tensile, compressive, bending, torsional stress comprehensive function are in body, and this quality to sleeve pipe itself has proposed higher requirement.In case itself damages sleeve pipe for a certain reason, possibly cause the underproduction of whole mouthful of well, even scrap.
At present, existing petroleum casing pipe divides two kinds of short thread casing and box cupling thereof and long thread casing and box cuplings thereof by SY/T6194-96.The petroleum casing pipe of prior art, the junction, bonding strength does not often reach, and sealing performance is also relatively poor.Particularly use the small casing in slim-hole to occur the problems referred to above more easily.
The utility model content
The technical assignment of the utility model is to above weak point; Provide a kind of and can guarantee bonding strength and the requirement of sealing performance; When having satisfied cover well overhaul sidetracking again to the maximum requirement of external diameter in the small casing, direct linkage type integral joint casing with better functional performance.
The utility model solves the technical scheme that its technical problem adopted: said sleeve pipe one end is the cover interface tube; The said sleeve pipe other end is casing joint; The shape of cover interface tube and the shape of casing joint are coincide mutually, and the cover interface tube of a sleeve pipe can adopt inclined to one side ladder lock end face seal to be connected with the casing joint of another sleeve pipe.
The cover interface tube of a sleeve pipe can adopt the inclined to one side ladder lock of pitch 5 tooth/inches to be connected with the casing joint of another sleeve pipe.
Casing joint is taper, and tapering is 1: 16.
The diameter of sleeve pipe is 108 millimeters, and the thickness of sleeve pipe is 8 millimeters.
The direct linkage type integral joint casing of the utility model is compared with prior art, has the following advantages:
1, the direct linkage type integral joint casing can following satisfy the requirement to internal diameter time depth capacity in slim-hole;
2, owing to reduced connecting elements, use more reliable;
3, can guarantee bonding strength and to the requirement of sealing performance, when having satisfied cover well overhaul sidetracking again to the maximum requirement of external diameter in the small casing;
4, can be used for gas well, cover gas combined shaft, high gland well and directional well, high-inclination horizontal well thermal production well etc.; Thereby, have good value for applications.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing 2 is the connected mode sketch map that two direct linkage type integral joint casings are connected.
Among the figure: 1, sleeve pipe, 2, the cover interface tube, 3, casing joint, 4, ladder lock partially.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
The direct linkage type integral joint casing of the utility model; Said sleeve pipe 1 one ends are cover interface tube 2; Said sleeve pipe 1 other end is casing joint 3; The shape of cover interface tube 2 and the shape of casing joint 3 are coincide mutually, and the cover interface tube 2 of a sleeve pipe 1 can adopt inclined to one side ladder lock 4 end face seals to be connected with the casing joint 3 of another sleeve pipe 1.
The cover interface tube 2 of a sleeve pipe 1 can adopt the inclined to one side ladder lock 4 of pitch 5 tooth/inches to be connected with the casing joint 3 of another sleeve pipe 1.
The diameter of sleeve pipe 1 is 108 millimeters, and the thickness of sleeve pipe 1 is 8 millimeters.
Its processing and fabricating of direct linkage type integral joint casing of the utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of manual, be the known technology of those skilled in the art.
Claims (4)
1. direct linkage type integral joint casing; It is characterized in that said sleeve pipe one end is the cover interface tube; The said sleeve pipe other end is casing joint; The shape of cover interface tube and the shape of casing joint are coincide mutually, and the cover interface tube of a sleeve pipe can adopt inclined to one side ladder lock end face seal to be connected with the casing joint of another sleeve pipe.
2. direct linkage type integral joint casing according to claim 1 is characterized in that the cover interface tube of a sleeve pipe can adopt the inclined to one side ladder lock of pitch 5 tooth/inches to be connected with the casing joint of another sleeve pipe.
3. direct linkage type integral joint casing according to claim 1 is characterized in that casing joint is taper, and tapering is 1: 16.
4. direct linkage type integral joint casing according to claim 1, the diameter that it is characterized in that sleeve pipe is 108 millimeters, the thickness of sleeve pipe is 8 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201313635U CN202520244U (en) | 2012-03-31 | 2012-03-31 | Direct connecting type coupling-free casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201313635U CN202520244U (en) | 2012-03-31 | 2012-03-31 | Direct connecting type coupling-free casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520244U true CN202520244U (en) | 2012-11-07 |
Family
ID=47103197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201313635U Expired - Fee Related CN202520244U (en) | 2012-03-31 | 2012-03-31 | Direct connecting type coupling-free casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204207A (en) * | 2017-12-14 | 2018-06-26 | 中国石油天然气股份有限公司 | Sand-proof well completion pipe string |
-
2012
- 2012-03-31 CN CN2012201313635U patent/CN202520244U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204207A (en) * | 2017-12-14 | 2018-06-26 | 中国石油天然气股份有限公司 | Sand-proof well completion pipe string |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180331 |