CN201254957Y - Non-coupling straight-connecting sleeve pipe - Google Patents
Non-coupling straight-connecting sleeve pipe Download PDFInfo
- Publication number
- CN201254957Y CN201254957Y CNU2008201722626U CN200820172262U CN201254957Y CN 201254957 Y CN201254957 Y CN 201254957Y CN U2008201722626 U CNU2008201722626 U CN U2008201722626U CN 200820172262 U CN200820172262 U CN 200820172262U CN 201254957 Y CN201254957 Y CN 201254957Y
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- CN
- China
- Prior art keywords
- casing
- ladder lock
- joint
- side ladder
- sleeve pipe
- 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 - Lifetime
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Abstract
The utility model provides an integral joint extreme-line direct casing, which belongs to the technical field of an oil field operation appliance. The casing adopts the structure that a casing joint is arranged at one end of the casing, and a casing connector is arranged at the other end; buttress internal thread is arranged at the casing joint; buttress external thread matched with the buttress internal thread of the casing joint is arranged at the casing connector; a torsion resistant shoulder is arranged at the casing connector; and the shape of the casing joint is identical with that of the casing connector. The integral joint extreme-line direct casing has the advantages that the design is reasonable, the structure is simple, the processing and manufacturing are easy, the casing is provided with the torsion resistant shoulder and the buttress thread, the design ensures that the intensity of the connection between casings is high, and the sealing property is good; after the casings are connected, outer shoulders are not required, the cementing quality is enhanced, simultaneously the internal diameter is increased furthest, thereby the internal diameter of the oil tube is increased, the operating efficiency is enhanced, and the cost is reduced; and the down hole construction is convenient.
Description
Technical field
The utility model relates to oil field operation technique with the apparatus field, specifically a kind of no box cupling direct linkage type sleeve pipe.
Background technology
Demand along with oil industry rapid development and market, the connected mode of products such as employed beam hanger, oil pipe is in present stage in the oil field operation process, and general API standard or other industry standard can not satisfy the demand of modern work production.According to the needs of putting into practice operation of oil drilling or other types, must could satisfy modern more high efficiency, high-quality enforcement work production by its beam hanger, oil pipe etc. are made particular design.Especially casing tube, the sleeve pipe junction of prior art is in order to reach certain bonding strength and sealing effectiveness and can't overcome technical essential and have to add outer shoulder, and the sleeve pipe external diameter is a fixed outer diameter according to standard, so such design has reduced pipe aperture, have to select the oil pipe of small-sized to carry out operation, inefficiency, cost and consumptive material are excessive.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of no box cupling direct linkage type sleeve pipe is provided.
The technical solution of the utility model realizes in the following manner, this no box cupling direct linkage type sleeve pipe, its structure is that this sleeve pipe one end is the cover interface tube, the other end is casing joint, the cover interface tube is provided with inclined to one side ladder lock internal thread, casing joint is provided with the inclined to one side ladder lock external screw thread that matches with the inclined to one side ladder lock internal thread that overlaps interface tube, and casing joint is provided with antitorque shoulder, and cover interface tube shape and casing joint shape match.
Casing joint is taper.
The tapering of taper joint is 1: 16.
The inclined to one side ladder lock external screw thread pitch of casing joint is 5 button inclined to one side ladder lock/inches.
The inclined to one side ladder lock internal thread of cover interface tube is that the pitch that the inclined to one side ladder lock external screw thread with casing joint matches is the inclined to one side ladder lock internal thread of 5 button inclined to one side ladder lock/inches.
The beneficial effect that the utility model is compared with prior art produced is:
This no box cupling direct linkage type sleeve design is reasonable, simple in structure, is easy to processing and manufacturing, and this sleeve design is with antitorque shoulder and ladder lock screw thread partially, and such design makes bonding strength height between sleeve pipe and the sleeve pipe, good seal performance; After sleeve pipe connects, do not have outer shoulder, when improving cementing quality, thereby its internal diameter of big raising of trying one's best improves pipe aperture, helps improving operating efficiency, reduces cost; This no box cupling direct linkage type sleeve pipe is gone into the well constructing operation conveniently.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the cross-sectional view of A-A in the accompanying drawing 1;
Accompanying drawing 3 is two connected mode schematic diagrames that no box cupling direct linkage type sleeve pipe is connected of the present utility model.
Mark in the accompanying drawing is represented respectively:
1, cover interface tube, 2, ladder lock internal thread partially, 3, ladder lock external screw thread partially, 4, casing joint, 5, antitorque shoulder.
The specific embodiment
Below in conjunction with accompanying drawing no box cupling direct linkage type sleeve pipe of the present utility model is done following detailed description the in detail.
Shown in accompanying drawing 1,2,3, no box cupling direct linkage type sleeve pipe of the present utility model, its structure is that this sleeve pipe one end is a cover interface tube 1, the other end is casing joint 4, cover interface tube 1 is provided with inclined to one side ladder lock internal thread 2, casing joint 4 is provided with the inclined to one side ladder lock external screw thread 3 that matches with the inclined to one side ladder lock internal thread 2 that overlaps interface tube 1, and casing joint 4 is provided with antitorque shoulder 5, and cover interface tube 1 shape and casing joint 4 shapes match.Wherein, casing joint 4 is that tapering is 1: 16 a taper joint; The inclined to one side ladder lock external screw thread pitch of casing joint 4 is five button inclined to one side ladder lock/inches.The inclined to one side ladder lock internal thread of cover interface tube 1 is that the pitch that the inclined to one side ladder lock external screw thread with casing joint matches is the inclined to one side ladder lock internal thread of five button inclined to one side ladder lock/inches.
Claims (5)
1, no box cupling direct linkage type sleeve pipe, it is characterized in that this sleeve pipe one end is the cover interface tube, the other end is casing joint, the cover interface tube is provided with inclined to one side ladder lock internal thread, casing joint is provided with the inclined to one side ladder lock external screw thread that matches with the inclined to one side ladder lock internal thread that overlaps interface tube, casing joint is provided with antitorque shoulder, and cover interface tube shape and casing joint shape match.
2, no box cupling direct linkage type sleeve pipe according to claim 1 is characterized in that casing joint is taper.
3, no box cupling direct linkage type sleeve pipe according to claim 2, the tapering that it is characterized in that the taper joint is 1:16.
4, no box cupling direct linkage type sleeve pipe according to claim 1, the inclined to one side ladder lock external screw thread pitch that it is characterized in that casing joint are 5 button inclined to one side ladder lock/inches.
5, according to claim 1 or 4 described no box cupling direct linkage type sleeve pipes, the inclined to one side ladder lock internal thread that it is characterized in that overlapping interface tube is that the pitch that the inclined to one side ladder lock external screw thread with casing joint matches is the inclined to one side ladder lock internal thread of 5 button inclined to one side ladder lock/inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201722626U CN201254957Y (en) | 2008-09-25 | 2008-09-25 | Non-coupling straight-connecting sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201722626U CN201254957Y (en) | 2008-09-25 | 2008-09-25 | Non-coupling straight-connecting sleeve pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201254957Y true CN201254957Y (en) | 2009-06-10 |
Family
ID=40738274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201722626U Expired - Lifetime CN201254957Y (en) | 2008-09-25 | 2008-09-25 | Non-coupling straight-connecting sleeve pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201254957Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265191A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-7 directly-connected special thread structure oil casing |
| 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 |
-
2008
- 2008-09-25 CN CNU2008201722626U patent/CN201254957Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265191A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-7 directly-connected special thread structure oil casing |
| 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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090610 |