Youqiang LIAO

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Well killing method and device for a fractured formation without sa...
- Patent number 10,408,014
- Issue date Sep 10, 2019
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Baojiang Sun
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Anti-settling Apparatus and Method and Apparatus for Checking the S...
- Publication number 20190178046
- Publication date Jun 13, 2019
- China University of Petroleum (East China)
- Zhiyuan WANG
- E21 - EARTH DRILLING MINING