CN207568512U - 一种弹性驱动可变径套管扶正器 - Google Patents
一种弹性驱动可变径套管扶正器 Download PDFInfo
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CN201721514648.6U CN207568512U (zh) | 2017-11-14 | 2017-11-14 | 一种弹性驱动可变径套管扶正器 |
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CN201721514648.6U CN207568512U (zh) | 2017-11-14 | 2017-11-14 | 一种弹性驱动可变径套管扶正器 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110513067A (zh) * | 2019-07-27 | 2019-11-29 | 山东四通石油技术开发有限公司 | 一种扶正套管贴堵管 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110513067A (zh) * | 2019-07-27 | 2019-11-29 | 山东四通石油技术开发有限公司 | 一种扶正套管贴堵管 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210914 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 |
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CF01 | Termination of patent right due to non-payment of annual fee |