CN207513578U - 一种用于分采管柱的堵头 - Google Patents
一种用于分采管柱的堵头 Download PDFInfo
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- CN207513578U CN207513578U CN201720982588.4U CN201720982588U CN207513578U CN 207513578 U CN207513578 U CN 207513578U CN 201720982588 U CN201720982588 U CN 201720982588U CN 207513578 U CN207513578 U CN 207513578U
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- plug
- tubing string
- blocking cap
- pin
- dividing
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Application Number | Priority Date | Filing Date | Title |
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CN201720982588.4U CN207513578U (zh) | 2017-08-08 | 2017-08-08 | 一种用于分采管柱的堵头 |
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CN201720982588.4U CN207513578U (zh) | 2017-08-08 | 2017-08-08 | 一种用于分采管柱的堵头 |
Publications (1)
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CN207513578U true CN207513578U (zh) | 2018-06-19 |
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CN201720982588.4U Expired - Fee Related CN207513578U (zh) | 2017-08-08 | 2017-08-08 | 一种用于分采管柱的堵头 |
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CN (1) | CN207513578U (zh) |
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2017
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
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. |
|
CP01 | Change in the name or title of a patent holder | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20210808 |
|
CF01 | Termination of patent right due to non-payment of annual fee |