CN201037407Y - 油气井用动态负压装置 - Google Patents
油气井用动态负压装置 Download PDFInfo
- Publication number
- CN201037407Y CN201037407Y CNU2007200782108U CN200720078210U CN201037407Y CN 201037407 Y CN201037407 Y CN 201037407Y CN U2007200782108 U CNU2007200782108 U CN U2007200782108U CN 200720078210 U CN200720078210 U CN 200720078210U CN 201037407 Y CN201037407 Y CN 201037407Y
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2007200782108U CN201037407Y (zh) | 2007-01-12 | 2007-01-12 | 油气井用动态负压装置 |
Applications Claiming Priority (1)
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CNU2007200782108U CN201037407Y (zh) | 2007-01-12 | 2007-01-12 | 油气井用动态负压装置 |
Publications (1)
Publication Number | Publication Date |
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CN201037407Y true CN201037407Y (zh) | 2008-03-19 |
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Application Number | Title | Priority Date | Filing Date |
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CNU2007200782108U Expired - Lifetime CN201037407Y (zh) | 2007-01-12 | 2007-01-12 | 油气井用动态负压装置 |
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CN (1) | CN201037407Y (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101220739B (zh) * | 2007-01-12 | 2011-07-20 | 中国石油集团川庆钻探工程有限公司测井公司 | 油气井用动态负压装置 |
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2007
- 2007-01-12 CN CNU2007200782108U patent/CN201037407Y/zh not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101220739B (zh) * | 2007-01-12 | 2011-07-20 | 中国石油集团川庆钻探工程有限公司测井公司 | 油气井用动态负压装置 |
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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: 20090109 Address after: Daqing village, Dashi dam, Jiangbei District, Chongqing, China: 400021 Patentee after: Well Logging Company of CNPC Chuanqing Drilling Engineering Co., Ltd. Address before: Daqing village, Dashi dam, Jiangbei District, Chongqing, China: 400020 Patentee before: Logging Company of Sichuan Petroleum Administration |
|
ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEERI Free format text: FORMER OWNER: SICHUAN PETROLEUM ADMINISTRATION WELL LOGGING CO.,LTD. Effective date: 20090109 |
|
AV01 | Patent right actively abandoned |
Granted publication date: 20080319 Effective date of abandoning: 20070112 |