CN206174887U - 一种可钻式偏心球面引鞋 - Google Patents
一种可钻式偏心球面引鞋 Download PDFInfo
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- CN206174887U CN206174887U CN201621163040.9U CN201621163040U CN206174887U CN 206174887 U CN206174887 U CN 206174887U CN 201621163040 U CN201621163040 U CN 201621163040U CN 206174887 U CN206174887 U CN 206174887U
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- guide shoe
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CN201621163040.9U CN206174887U (zh) | 2016-10-31 | 2016-10-31 | 一种可钻式偏心球面引鞋 |
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CN201621163040.9U CN206174887U (zh) | 2016-10-31 | 2016-10-31 | 一种可钻式偏心球面引鞋 |
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CN206174887U true CN206174887U (zh) | 2017-05-17 |
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CN201621163040.9U Expired - Fee Related CN206174887U (zh) | 2016-10-31 | 2016-10-31 | 一种可钻式偏心球面引鞋 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107201879A (zh) * | 2017-07-28 | 2017-09-26 | 中国石油集团渤海钻探工程有限公司 | 一体式免钻球座引鞋 |
CN113622837A (zh) * | 2021-09-18 | 2021-11-09 | 河北上善石油机械有限公司 | 一种螺杆水力旋转引鞋 |
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2016
- 2016-10-31 CN CN201621163040.9U patent/CN206174887U/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107201879A (zh) * | 2017-07-28 | 2017-09-26 | 中国石油集团渤海钻探工程有限公司 | 一体式免钻球座引鞋 |
CN113622837A (zh) * | 2021-09-18 | 2021-11-09 | 河北上善石油机械有限公司 | 一种螺杆水力旋转引鞋 |
CN113622837B (zh) * | 2021-09-18 | 2022-05-10 | 河北上善石油机械有限公司 | 一种螺杆水力旋转引鞋 |
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Legal Events
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
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 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20211031 |