CN201723165U - Oil bushing with double-step spherical seal surface - Google Patents
Oil bushing with double-step spherical seal surface Download PDFInfo
- Publication number
- CN201723165U CN201723165U CN2010202312077U CN201020231207U CN201723165U CN 201723165 U CN201723165 U CN 201723165U CN 2010202312077 U CN2010202312077 U CN 2010202312077U CN 201020231207 U CN201020231207 U CN 201020231207U CN 201723165 U CN201723165 U CN 201723165U
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- Prior art keywords
- double
- screw thread
- seal surface
- tubing
- casing
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- 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 an oil bushing with a double-step spherical seal surface, which comprises a bushing body (1) and thread (5), wherein the thread (5) is machined on the outside wall of the bushing body (1), the top of the bushing body (1) is provided with a torque shoulder (2), the torque shoulder (2) is provided with a first step (3), the first step (3) is in a spherical shaped structure, and a second step (4) is arranged between the first step (3) and the thread (5). The oil bushing with a double-step spherical seal surface of the utility model has better seal effect.
Description
(1) technical field
The utility model relates to a kind of tubing and casing, especially relates to a kind of tubing and casing that has the spherical sealing surface of double step.
(2) background technology
The tubing and casing of oil field use at present adopts the API screw thread to connect mostly.The API screw thread because technology maturation, be easy to processing, advantage such as cost is lower, use more extensive always, but the API screw thread is owing to the reason of structure design aspect, there are many defectives that are difficult to overcome, as the low (round thread especially of bonding strength, bonding strength be body 60～80%), sealing performance is unreliable, go up difficult, the joint stress level height of button control, anticorrosion stress-resistant poor performance etc. are restricted the use of API screw thread.Because oil gas well drilling development of technology, drilling environment are harsh day by day, also higher to the requirement of tubing and casing, common API nipple oil, sleeve pipe can't satisfy instructions for use, and the demand of special thread oil, sleeve pipe will significantly increase.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of tubing and casing that has the spherical sealing surface of double step with better sealing effectiveness is provided.
The purpose of this utility model is achieved in that a kind of tubing and casing that has the spherical sealing surface of double step, include body and screw thread, described screw thread is machined on the lateral wall of body, described body top is a torque shoulder, described torque shoulder place is provided with the one-level step, described one-level step is a spherical structure, is provided with two stage steps between described one-level step and the screw thread, and described one-level step and two stage steps are sealing surface.
The beneficial effects of the utility model are:
During use, owing to be provided with the step sealing surface, only need tubing and casing is screwed in the box cupling that is complementary with it, utilize the metal/metal hermetically-sealed construction to realize sealing, be provided with the two-stage step simultaneously and carry out primary seal, make tubing and casing have higher sealing effectiveness, thereby no longer need to utilize screw thread to bear sealing function, provide space widely for optimizing helicitic texture.
(4) description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the I enlarged drawing of Fig. 1.
Fig. 3 is the utility model sectional side view.
Among the figure:
(5) specific embodiment
Referring to Fig. 1～3, the utility model relates to a kind of tubing and casing that has the spherical sealing surface of double step, include body 1 and screw thread 5, described screw thread 5 is machined on the lateral wall of body 1, described body 1 top is a torque shoulder 2, and described torque shoulder 2 places are provided with one-level step 3, and described one-level step 3 is a spherical structure, be provided with two stage steps 4 between described one-level step 3 and the screw thread 5, described one-level step 3 and two stage steps 4 are sealing surface.
Claims (1)
1. tubing and casing that has the spherical sealing surface of double step, include body (1) and screw thread (5), described screw thread (5) is machined on the lateral wall of body (1), it is characterized in that: described body (1) top is a torque shoulder (2), described torque shoulder (2) locates to be provided with one-level step (3), described one-level step (3) is a spherical structure, is provided with two stage steps (4) between described one-level step (3) and the screw thread (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202312077U CN201723165U (en) | 2010-06-18 | 2010-06-18 | Oil bushing with double-step spherical seal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202312077U CN201723165U (en) | 2010-06-18 | 2010-06-18 | Oil bushing with double-step spherical seal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723165U true CN201723165U (en) | 2011-01-26 |
Family
ID=43491484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202312077U Expired - Fee Related CN201723165U (en) | 2010-06-18 | 2010-06-18 | Oil bushing with double-step spherical seal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901090A (en) * | 2019-11-19 | 2021-06-04 | 扬州埃尔智能设备有限公司 | High-strength low-current-consumption energy-saving connecting buckle |
-
2010
- 2010-06-18 CN CN2010202312077U patent/CN201723165U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901090A (en) * | 2019-11-19 | 2021-06-04 | 扬州埃尔智能设备有限公司 | High-strength low-current-consumption energy-saving connecting buckle |
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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: 20110126 Termination date: 20110618 |