CN202946036U - Anti-thread-gluing oil pipe - Google Patents
Anti-thread-gluing oil pipe Download PDFInfo
- Publication number
- CN202946036U CN202946036U CN 201220677615 CN201220677615U CN202946036U CN 202946036 U CN202946036 U CN 202946036U CN 201220677615 CN201220677615 CN 201220677615 CN 201220677615 U CN201220677615 U CN 201220677615U CN 202946036 U CN202946036 U CN 202946036U
- Authority
- CN
- China
- Prior art keywords
- pipe
- thread
- oil pipe
- gluing
- oil
- 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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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to an anti-thread-gluing oil pipe, belonging to the field of petroleum machinery oil extraction equipment. The anti-thread-gluing oil pipe is composed of a pipe body, pipe heads at both ends of the pipe body, and a coupling, and is characterized in that a thread surface of each pipe head is provided with a tungalloy plating layer; the coupling is in threaded connection with the pipe heads; and the pipe body and the pipe heads at the two ends of the pipe body are in friction welding to form a whole. Compared with the existing oil pipe, the anti-thread-gluing oil pipe has the beneficial effects that as the thread surface of each pipe head is provided with the tungalloy plating layer, the anti-thread-gluing, corrosion-resistant and wear-resistant properties of the oil pipe threads are improved, thus the service life of the oil pipe can be prolonged.
Description
Affiliated technical field
The utility model belongs to petroleum machinery oil production equipment field, and what be specifically related to is a kind of oil extraction in oil field or fluid injection body medium antigalling compound pipe.
Background technology
Modern oil exploitation is widely used the method for mechanical oil recovery, recovers the oil or the large multiplex oil pipe of fluid injection body medium.In oil well, well liquid contains salt solution, carbon dioxide, hydrogen sulfide or corrosion-causing bacteria, the existence of these corrosive mediums or corrosion-causing bacteria, greatly reduce the application life of oil pipe, especially the thread gluing problem of oil pipe and box cupling is a difficult problem that exists in domestic each elephant well construction always.Therefore, processing and manufacturing have anticorrosion, sticky thread resistance necessarily can oil pipe, improving tubing round thread screw thread anticorrosion antiwear performance is to extend the oil pipe key in application life.
Summary of the invention
In order to improve tubing round thread screw thread anticorrosion antiwear performance, the utility model provides a kind of technical scheme of antigalling compound pipe, and the technical program is simple in structure, is well positioned to meet existing producing well to the performance requirement of the anti-thread gluing of tubing round thread.
The utility model is achieved in that a kind of antigalling compound pipe, and it is made of tube head, the box cupling at body, body two ends, it is characterized in that, the thread surface of tube head has one deck tungsten alloy coating.
Described box cupling is connected with the mode that tube head is threaded connection.
The tube head friction welding at described body and body two ends is integrated.
The beneficial effects of the utility model are: compare with existing oil pipe, the thread surface of tube head has one deck tungsten alloy coating, has improved anti-thread gluing and the anticorrosion antiwear performance of tubing round thread, thereby can extend the application life of oil pipe.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is that screw thread of the present utility model amplifies the tooth form structure diagram.
In figure: 1. box cupling, 2. tube head, 3. body, 4. tungsten alloy coating, 5. weld seam.
Specific embodiment
As shown in drawings, the utility model is made of tube head (2), the box cupling (1) at body (3), body (3) two ends, it is characterized in that, the thread surface of tube head (2) has one deck tungsten alloy coating (4).
Box cupling (1) is connected with the mode that tube head (2) is threaded connection.
Tube head (2) friction welding at body (3) and body (3) two ends is integrated, and forms weld seam (5).
Claims (3)
1. antigalling compound pipe, it is made of tube head, the box cupling at body, body two ends, it is characterized in that, and the thread surface of tube head has one deck tungsten alloy coating.
2. a kind of antigalling compound pipe according to claim 1, be further characterized in that, described box cupling is connected with the mode that tube head is threaded connection.
3. a kind of antigalling compound pipe according to claim 1, be further characterized in that, the tube head friction welding at described body and body two ends is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677615 CN202946036U (en) | 2012-12-08 | 2012-12-08 | Anti-thread-gluing oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677615 CN202946036U (en) | 2012-12-08 | 2012-12-08 | Anti-thread-gluing oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946036U true CN202946036U (en) | 2013-05-22 |
Family
ID=48421743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220677615 Expired - Lifetime CN202946036U (en) | 2012-12-08 | 2012-12-08 | Anti-thread-gluing oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946036U (en) |
-
2012
- 2012-12-08 CN CN 201220677615 patent/CN202946036U/en not_active Expired - Lifetime
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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: 20130522 |