CN203626829U - Tester for dynamic drilling fluid blockage of coal bed shaft wall - Google Patents
Tester for dynamic drilling fluid blockage of coal bed shaft wall Download PDFInfo
- Publication number
- CN203626829U CN203626829U CN201320581132.9U CN201320581132U CN203626829U CN 203626829 U CN203626829 U CN 203626829U CN 201320581132 U CN201320581132 U CN 201320581132U CN 203626829 U CN203626829 U CN 203626829U
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- Prior art keywords
- drilling fluid
- coal seam
- pit shaft
- tester
- borehole wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201320581132.9U CN203626829U (en) | 2013-09-18 | 2013-09-18 | Tester for dynamic drilling fluid blockage of coal bed shaft wall |
Applications Claiming Priority (1)
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CN201320581132.9U CN203626829U (en) | 2013-09-18 | 2013-09-18 | Tester for dynamic drilling fluid blockage of coal bed shaft wall |
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CN203626829U true CN203626829U (en) | 2014-06-04 |
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CN201320581132.9U Expired - Fee Related CN203626829U (en) | 2013-09-18 | 2013-09-18 | Tester for dynamic drilling fluid blockage of coal bed shaft wall |
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CN (1) | CN203626829U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104453867A (en) * | 2013-09-18 | 2015-03-25 | 中国海洋石油总公司 | Drilling fluid dynamic coal seam borehole wall plugging tester |
CN105223007A (en) * | 2015-09-29 | 2016-01-06 | 中国海洋石油总公司 | Oil/gas Well rupture disk performance test evaluating apparatus |
-
2013
- 2013-09-18 CN CN201320581132.9U patent/CN203626829U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104453867A (en) * | 2013-09-18 | 2015-03-25 | 中国海洋石油总公司 | Drilling fluid dynamic coal seam borehole wall plugging tester |
CN105223007A (en) * | 2015-09-29 | 2016-01-06 | 中国海洋石油总公司 | Oil/gas Well rupture disk performance test evaluating apparatus |
CN105223007B (en) * | 2015-09-29 | 2017-08-08 | 中海油能源发展股份有限公司 | Oil/gas Well rupture disk performance test evaluating apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: SHANGHAI BRANCH, CHINA OILFIELD SERVICES Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: HUBEI HANC NEW-TECHNOLOGY Co.,Ltd. Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street CNOOC building Co-patentee before: SHANGHAI BRANCH, CHINA OILFIELD SERVICES Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: HUBEI HANC NEW-TECHNOLOGY Co.,Ltd. |
|
CP03 | Change of name, title or address | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20210918 |
|
CF01 | Termination of patent right due to non-payment of annual fee |