CN2923973Y - 高压气垫钻井设备 - Google Patents
高压气垫钻井设备 Download PDFInfo
- Publication number
- CN2923973Y CN2923973Y CN 200520088322 CN200520088322U CN2923973Y CN 2923973 Y CN2923973 Y CN 2923973Y CN 200520088322 CN200520088322 CN 200520088322 CN 200520088322 U CN200520088322 U CN 200520088322U CN 2923973 Y CN2923973 Y CN 2923973Y
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- Prior art keywords
- drilling rod
- small sircle
- drilling
- sircle hole
- high pressure
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 200520088322 CN2923973Y (zh) | 2005-10-22 | 2005-10-22 | 高压气垫钻井设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 200520088322 CN2923973Y (zh) | 2005-10-22 | 2005-10-22 | 高压气垫钻井设备 |
Publications (1)
Publication Number | Publication Date |
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CN2923973Y true CN2923973Y (zh) | 2007-07-18 |
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Family Applications (1)
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CN 200520088322 Expired - Fee Related CN2923973Y (zh) | 2005-10-22 | 2005-10-22 | 高压气垫钻井设备 |
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CN (1) | CN2923973Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101892826A (zh) * | 2010-04-30 | 2010-11-24 | 钟立国 | 气体与电加热辅助重力泄油技术 |
CN103195364A (zh) * | 2013-04-19 | 2013-07-10 | 中国石油大学(北京) | 降低井底环空围压提高径向水平井破岩效率的方法及装置 |
-
2005
- 2005-10-22 CN CN 200520088322 patent/CN2923973Y/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101892826A (zh) * | 2010-04-30 | 2010-11-24 | 钟立国 | 气体与电加热辅助重力泄油技术 |
CN103195364A (zh) * | 2013-04-19 | 2013-07-10 | 中国石油大学(北京) | 降低井底环空围压提高径向水平井破岩效率的方法及装置 |
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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 | ||
CP02 | Change in the address of a patent holder |
Address after: Graduate School of China Petroleum Exploration and Development Research Institute, No. 20, Haidian District, Beijing, Xueyuan Road 100086, China Patentee after: Ji Guodong Address before: No. two, 271 North Road, Shandong, Dongying Province, 257061 Patentee before: Ji Guodong |
|
C56 | Change in the name or address of the patentee |
Owner name: JI GUODONG Free format text: NEW ADDRESS: CHINA OIL EXPLORATION INSTITUTE POSTGRADUATE DEPARTMENT, NO. 20, UNIVERSITY ROAD, HAIDIAN DISTRICT, BEIJING CITY, ZIP CODE:100086 |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20091123 |