CN202117576U - Air-sealed special threaded oil pipe joint - Google Patents
Air-sealed special threaded oil pipe joint Download PDFInfo
- Publication number
- CN202117576U CN202117576U CN201120076124XU CN201120076124U CN202117576U CN 202117576 U CN202117576 U CN 202117576U CN 201120076124X U CN201120076124X U CN 201120076124XU CN 201120076124 U CN201120076124 U CN 201120076124U CN 202117576 U CN202117576 U CN 202117576U
- Authority
- CN
- China
- Prior art keywords
- screw thread
- oil pipe
- special threaded
- air
- pipe joint
- 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
Links
- 238000007789 sealing Methods 0.000 abstract description 6
- 210000002445 nipple Anatomy 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model discloses an air-sealed special threaded oil pipe joint applicable to a high-pressure oil gas well, which consists of an external nipple (1) and an internal nipple (2), wherein the front end of the screw thread of the external nipple (1) thereof has a cylindrical surface (3); a cylindrical hole (4) is formed on the bottom end of the screw thread of the internal nipper (2);and the cylindrical surface (3) and the cylindrical hole (4) have clearance fit with each other, thereby achieving a sealing effect. During screwing, the screwing torque of the screw thread is controlled by a large hydraulic screwing clamp; and the design saves a torque limiting step, thereby greatly reducing the machining difficulty of the special threaded oil pipe, increasing the yield in machining, and reducing the production cost.
Description
Technical field
The utility model relates to a kind of hermetic seal special thread oil connection, is a kind of special thread oil sleeve joint that has metallic seal, is applicable to that high-pressure oil-gas well uses.
Background technology
At present, its thread forms of tubing and casing of using during domestic oil field development is produced mainly is API standard round nipple or buttress thread joint, in order to be applicable to the needs of high-pressure oil-gas well; Oil well pipe manufacturer develops the special thread oil sleeve joint with gas sealing ability in succession both at home and abroad, and representative have WAM, FOX, TDS button-type etc., but its screw thread forward end seal part of existing extraordinary screw thread all has a limited torque step; And as secondary sealing; When screw thread tightened, the limited torque step held out against simultaneously, and this just requires accuracy of screw machining higher; Difficulty of processing is big, and product percent of pass is lower.
Summary of the invention
The purpose of the utility model provides does not a kind ofly have the limited torque step, and has excellent sealing ability, is easy to processing and detects, higher, the on-the-spot a kind of hermetic seal particular oils thread compound union easy to use of processed finished products rate.
The purpose of the utility model is achieved in that it is made up of male connection, female adapter, and its male connection screw thread front end has a face of cylinder, and there is a cylindrical hole female adapter screw thread bottom; Both cooperate, and are interference fit, play sealing function; The screw thread torque wrench moment is controlled by last button hydraulic tongs, because the moment of torsion step has been saved in this design, thereby can reduce the difficulty of processing of extraordinary screw thread oil pipe greatly; Improve yield rate, reduce production costs.
The utility model is simple in structure, is easy to processing and measurement, good seal performance, and yield rate is high, is suitable for the oil field to be applied.
Description of drawings
Fig. 1, the utility model structural representation
Fig. 2, the utility model I part enlarged drawing
The specific embodiment
Below in conjunction with accompanying drawing this practicality newly is described in detail:
The utility model is made up of male connection (1), female adapter (2); Its male connection (1) screw thread front end has a face of cylinder (3), and there is a cylindrical hole (4) female adapter (2) screw thread bottom, and both cooperate the face of cylinder (3) and cylindrical hole (4); Be interference fit, play sealing function.During last button, the screw thread torque wrench moment is controlled by last button hydraulic tongs, because the limited torque step has been saved in this design, thereby can reduce the difficulty of processing of extraordinary screw thread oil pipe greatly, improves the processed finished products rate, reduces production costs.
Claims (1)
1. hermetic seal special thread oil connection; It is made up of male connection (1), female adapter (2); It is characterized in that: male connection (1) screw thread front end has a face of cylinder (3); There is a cylindrical hole (4) female adapter (2) screw thread bottom, and both cooperate the face of cylinder (3) and cylindrical hole (4), are interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120076124XU CN202117576U (en) | 2011-03-15 | 2011-03-15 | Air-sealed special threaded oil pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120076124XU CN202117576U (en) | 2011-03-15 | 2011-03-15 | Air-sealed special threaded oil pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117576U true CN202117576U (en) | 2012-01-18 |
Family
ID=45458649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120076124XU Expired - Lifetime CN202117576U (en) | 2011-03-15 | 2011-03-15 | Air-sealed special threaded oil pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
-
2011
- 2011-03-15 CN CN201120076124XU patent/CN202117576U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
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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: 20120118 |