Guangquan Li

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Sleeve fracturing assembly, device using the same and method for us...
- Patent number 10,450,837
- Issue date Oct 22, 2019
- China Petroleum and Chemical Corporation
- Zhenwei Gan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sleeve fracturing assembly, device using the same and method for us...
- Patent number 9,708,889
- Issue date Jul 18, 2017
- China Petroleum and Chemical Corporation
- Zhenwei Gan
- E21 - EARTH DRILLING MINING

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
SLEEVE FRACTURING ASSEMBLY, DEVICE USING THE SAME AND METHOD FOR US...
- Publication number 20170234110
- Publication date Aug 17, 2017
- China Petroleum and Chemical Corporation
- Zhenwei Gan
- E21 - EARTH DRILLING MINING
Information Patent Application
SLEEVE FRACTURING ASSEMBLY, DEVICE USING THE SAME AND METHOD FOR US...
- Publication number 20140124213
- Publication date May 8, 2014
- CHINA PETROLEUM AND CHEMICAL CORPORATION SOUTHWEST OIL AND GAS COMPANY
- Zhenwei Gan
- E21 - EARTH DRILLING MINING