Ning Zhang

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Double-spiral-tube structure, grouting and pile forming device and...
- Patent number 11,525,231
- Issue date Dec 13, 2022
- Ocean University of China
- Xuguang Chen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Surface layer conductor running tool for deep-water well drilling
- Patent number 9,631,450
- Issue date Apr 25, 2017
- China University of Petroleum (East China)
- Baojiang Sun
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOUBLE-SPIRAL-TUBE STRUCTURE, GROUTING AND PILE FORMING DEVICE AND...
- Publication number 20220251794
- Publication date Aug 11, 2022
- Ocean University of China
- Xuguang CHEN
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
SURFACE LAYER CONDUCTOR RUNNING TOOL FOR DEEP-WATER WELL DRILLING
- Publication number 20170089161
- Publication date Mar 30, 2017
- China University of Petroleum (East China)
- Baojiang Sun
- E21 - EARTH DRILLING MINING