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Qingdao, CN
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last 30 patents
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Patent Grant
Apparatus for preventing and controlling secondary generation of hy...
Patent number
12,000,245
Issue date
Jun 4, 2024
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Jianbo Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Active control method and control device for wellbore pressure in t...
Patent number
11,002,126
Issue date
May 11, 2021
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Zhiyuan Wang
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
APPARATUS FOR PREVENTING AND CONTROLLING SECONDARY GENERATION OF HY...
Publication number
20240084675
Publication date
Mar 14, 2024
China University of Petroleum (East China)
Jianbo Zhang
E21 - EARTH DRILLING MINING
Information
Patent Application
Active control method and control device for wellbore pressure in t...
Publication number
20210087918
Publication date
Mar 25, 2021
China University of Petroleum
Zhiyuan Wang
E21 - EARTH DRILLING MINING