CN201292780Y - 大通孔中风压密封钻杆 - Google Patents
大通孔中风压密封钻杆 Download PDFInfo
- Publication number
- CN201292780Y CN201292780Y CNU200820222437XU CN200820222437U CN201292780Y CN 201292780 Y CN201292780 Y CN 201292780Y CN U200820222437X U CNU200820222437X U CN U200820222437XU CN 200820222437 U CN200820222437 U CN 200820222437U CN 201292780 Y CN201292780 Y CN 201292780Y
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- hole
- joint
- drill rod
- drilling rod
- male joint
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNU200820222437XU CN201292780Y (zh) | 2008-11-13 | 2008-11-13 | 大通孔中风压密封钻杆 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CNU200820222437XU CN201292780Y (zh) | 2008-11-13 | 2008-11-13 | 大通孔中风压密封钻杆 |
Publications (1)
Publication Number | Publication Date |
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CN201292780Y true CN201292780Y (zh) | 2009-08-19 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CNU200820222437XU Expired - Lifetime CN201292780Y (zh) | 2008-11-13 | 2008-11-13 | 大通孔中风压密封钻杆 |
Country Status (1)
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CN (1) | CN201292780Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102418482A (zh) * | 2011-12-30 | 2012-04-18 | 江阴德玛斯特钻具有限公司 | 修井用油钻管 |
CN110439479A (zh) * | 2019-08-30 | 2019-11-12 | 中国石油集团川庆钻探工程有限公司 | 油气钻井井口抽吸助排管汇系统 |
-
2008
- 2008-11-13 CN CNU200820222437XU patent/CN201292780Y/zh not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102418482A (zh) * | 2011-12-30 | 2012-04-18 | 江阴德玛斯特钻具有限公司 | 修井用油钻管 |
CN110439479A (zh) * | 2019-08-30 | 2019-11-12 | 中国石油集团川庆钻探工程有限公司 | 油气钻井井口抽吸助排管汇系统 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE Owner name: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RE Free format text: FORMER NAME: SIAN BRANCH OF CHINA COAL RESEARCH INSTITUTE |
|
CP01 | Change in the name or title of a patent holder |
Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: CCTEG Xi'an Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Research Institute Of China Coal Research Institute Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: Xi'an Research Institute Of China Coal Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Branch of China Coal Research Institute |
|
CX01 | Expiry of patent term |
Granted publication date: 20090819 |
|
CX01 | Expiry of patent term |