Drilling Technology Research Institute of Sinopec Oilfield Service Shengli Corporation

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Dongying City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Downhole casing expansion tool and method of expanding casings usin...
- Patent number 9,347,297
- Issue date May 24, 2016
- China Petroleum and Chemical Corporation
- Zuohui Li
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE CASING EXPANSION TOOL AND METHOD OF EXPANDING CASINGS USIN...
- Publication number 20140110136
- Publication date Apr 24, 2014
- Drilling Technology Research Institute of Sinopec Oilfield Service Shengli Co...
- Zuohui LI
- E21 - EARTH DRILLING MINING

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