Jieran Zhu

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Dongying, Shandong, CN

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Patents Applicationslast 30 patents

Information Patent Application
Steerable Drilling Device
- Publication number 20230383605
- Publication date Nov 30, 2023
- China Petroleum and Chemical Corporation
- Qingming MA
- E21 - EARTH DRILLING MINING
Information Patent Application
Static push-the-bit rotary guiding device
- Publication number 20180223599
- Publication date Aug 9, 2018
- SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY RESEARCH...
- Jinzhou Yang
- E21 - EARTH DRILLING MINING