CN201391224Y - 一种用于旋转导向钻井工具的增力驱动装置 - Google Patents
一种用于旋转导向钻井工具的增力驱动装置 Download PDFInfo
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- CN201391224Y CN201391224Y CN200920106156U CN200920106156U CN201391224Y CN 201391224 Y CN201391224 Y CN 201391224Y CN 200920106156 U CN200920106156 U CN 200920106156U CN 200920106156 U CN200920106156 U CN 200920106156U CN 201391224 Y CN201391224 Y CN 201391224Y
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- hydraulic cylinder
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CN200920106156U CN201391224Y (zh) | 2009-03-12 | 2009-03-12 | 一种用于旋转导向钻井工具的增力驱动装置 |
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CN200920106156U CN201391224Y (zh) | 2009-03-12 | 2009-03-12 | 一种用于旋转导向钻井工具的增力驱动装置 |
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CN201391224Y true CN201391224Y (zh) | 2010-01-27 |
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CN200920106156U Expired - Lifetime CN201391224Y (zh) | 2009-03-12 | 2009-03-12 | 一种用于旋转导向钻井工具的增力驱动装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107795280A (zh) * | 2017-11-13 | 2018-03-13 | 长江大学 | 一种水平钻井复合造斜导向钻具 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107795280A (zh) * | 2017-11-13 | 2018-03-13 | 长江大学 | 一种水平钻井复合造斜导向钻具 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20100127 |