Zhongshuai CHEN

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Dongying City, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Flow splitting device for gas reverse circulation drilling
- Patent number 11,946,334
- Issue date Apr 2, 2024
- China Petroleum and Chemical Corporation
- Chuanwei Zhao
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
CORING TOOL, CORING METHOD, AND APPLICATION THEREOF
- Publication number 20250059841
- Publication date Feb 20, 2025
- China Petroleum and Chemical Corporation
- Zhongshuai CHEN
- E21 - EARTH DRILLING MINING
Information Patent Application
Flow Splitting Device for Gas Reverse Circulation Drilling
- Publication number 20230147453
- Publication date May 11, 2023
- China Petroleum and Chemical Corporation
- Chuanwei ZHAO
- E21 - EARTH DRILLING MINING