CN203441473U - Logging instrument combined sealing structure - Google Patents
Logging instrument combined sealing structure Download PDFInfo
- Publication number
- CN203441473U CN203441473U CN201320508690.2U CN201320508690U CN203441473U CN 203441473 U CN203441473 U CN 203441473U CN 201320508690 U CN201320508690 U CN 201320508690U CN 203441473 U CN203441473 U CN 203441473U
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- China
- Prior art keywords
- face
- outer pipe
- connector
- joint
- outer tube
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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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- Sealing Material Composition (AREA)
Abstract
The utility model discloses a logging instrument combined sealing structure which comprises an outer pipe, an O-shaped ring and a connector. The outer pipe is connected with the connector through threads, a trapezoid shoulder is arranged on the outer pipe wall of the joint of the connector and the front end face of the outer pipe, the front end face of the outer pipe abuts against the lower end face of the trapezoid shoulder of the connector, and a C-shaped sealing ring is arranged in an annular space between the front end face of the outer pipe and the upper end face of the trapezoid shoulder of the connector. The O-shaped ring and the C-shaped sealing ring are adopted in the joint portion of the outer pipe and the connector, and the logging instrument combined sealing structure has the advantages of being corrosion resistant, high in sealing reliability under high temperature and high pressure, capable of meeting the high-reliability sealing requirement under a high-temperature and high-pressure environment (the temperature is above 230 DEG C and the pressure is larger than 80 MPa) and highly corrosive environment containing hydrogen sulfide and carbon dioxide and the like, and particularly suitable for being used for logging instruments of oil and gas wells high in sulfur content.
Description
Technical field
The utility model is a kind of combined sealing structure, is mainly used in the sealing in oil logging tool.
Background technology
Current domestic logging instrument adopts seal with O ring structure mostly, be subject to the own operating temperature of O shape circle lower (being generally less than 230 ℃), easy aging, the performance limitations to medium sensitivity, temperature be greater than under the high temperature and high pressure environment that 230 ℃, pressure are greater than 80Mpa and the reliability that works long hours under the severe corrosive environment such as sulfide hydrogen and carbon dioxide poor, easily extrude, the phenomenon such as corrosion and cause seal failure.
Summary of the invention
The purpose of this utility model is to provide a kind of logging instrument combined sealing structure, with overcome existing hermetically-sealed construction temperature be greater than under the high temperature and high pressure environment that 230 ℃, pressure are greater than 80Mpa and the reliability that works long hours under the severe corrosive environment such as sulfide hydrogen and carbon dioxide poor, easily extrude, the phenomenon such as corrosion and cause the defect of seal failure.
The technical solution of the utility model is: a kind of logging instrument combined sealing structure, comprise outer tube, O shape circle and joint, outer tube is connected with joint screw thread, on the outer tube wall of joint and outer tube front end face junction, be provided with trapezoidal shoulder, the front end face of outer tube withstands on the trapezoidal shoulder lower surface of joint, in the annular space between the front end face of outer tube and the trapezoidal shoulder upper surface of joint, C shape sealing ring is installed.
Described sealing ring is the O-ring seal of being made by anti-corrosive alloy material, and its cross section is C shape.
The utility model adopts O shape circle and C shape sealing ring two seals at outer tube and joint joint portion, has feature corrosion-resistant, that HTHP lower seal reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model logging instrument combined sealing structure specific embodiment.
The specific embodiment
The specific embodiment of logging instrument combined sealing structure of the present utility model as shown in Figure 1, this logging instrument combined sealing structure comprises outer tube 1, O shape circle 2, joint 4, outer tube 1 is threaded with joint 4, on the outer tube wall of joint 4 and outer tube 1 front end face junction, be provided with trapezoidal shoulder, the front end face of outer tube 1 withstands on the trapezoidal shoulder lower surface 4a of joint 4, in the annular space between the front end face of outer tube 1 and the trapezoidal shoulder upper surface 4b of joint 4, C shape sealing ring 3 is installed.
Described sealing ring 3 is O-ring seals of being made by anti-corrosive alloy material, and its cross section is C shape, and the arc surface of the end face extrusion metal C shape circle by outer tube 1 makes metal C shape circle produce distortion, realizes the sealing between outer tube 1 and joint 4.
Claims (2)
1. a logging instrument combined sealing structure, comprise outer tube (1), O shape circle (2) and joint (4), outer tube (1) is threaded with joint (4), it is characterized in that: on the outer tube wall of described joint (4) and described outer tube (1) front end face junction, be provided with trapezoidal shoulder, the front end face of outer tube (1) withstands on the trapezoidal shoulder lower surface (4a) of joint (4), in the annular space between the front end face of outer tube (1) and the trapezoidal shoulder upper surface (4b) of joint (4), sealing ring (3) is installed.
2. logging instrument combined sealing structure according to claim 1, is characterized in that: described sealing ring (3) is the O-ring seal of being made by anti-corrosive alloy material, and its cross section is C shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508690.2U CN203441473U (en) | 2013-08-20 | 2013-08-20 | Logging instrument combined sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508690.2U CN203441473U (en) | 2013-08-20 | 2013-08-20 | Logging instrument combined sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441473U true CN203441473U (en) | 2014-02-19 |
Family
ID=50092533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320508690.2U Expired - Fee Related CN203441473U (en) | 2013-08-20 | 2013-08-20 | Logging instrument combined sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131369A (en) * | 2017-05-25 | 2017-09-05 | 东莞合安机电有限公司 | A kind of air pressure plug |
-
2013
- 2013-08-20 CN CN201320508690.2U patent/CN203441473U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131369A (en) * | 2017-05-25 | 2017-09-05 | 东莞合安机电有限公司 | A kind of air pressure plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151123 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Central Plains geophysical log company of petroleum works Co., Ltd of China Petrochemical Industry Address before: 100728, No. 22 North Street, Chaoyang Gate, Beijing, Chaoyang District Patentee before: China Petrochemical Group Corp. Patentee before: Central Plains geophysical log company of petroleum works Co., Ltd of China Petrochemical Industry |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |