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GUANG HAN, CN

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Patents Grantslast 30 patents

Information Patent Grant
Jet flow adjustment method for rotary steerable downhole release
- Patent number 11,982,146
- Issue date May 14, 2024
- China National Petroleum Corporation
- Jichuan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for remotely shutting down downhole unit of rotary steering...
- Patent number 11,946,350
- Issue date Apr 2, 2024
- China National Petroleum Corporation
- Jing Bai
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual-speed dual—core enhanced drilling equipment
- Patent number 11,225,837
- Issue date Jan 18, 2022
- CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED
- Liexiang Han
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
System and method for dynamically adjusting coupling coefficients o...
- Publication number 20230223789
- Publication date Jul 13, 2023
- CHINA NATIONAL PETROLEUM CORPORATION
- Jing Bai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Gamma fusion computing method based on gamma probe state parameters
- Publication number 20230204814
- Publication date Jun 29, 2023
- CHINA NATIONAL PETROLEUM CORPORATION
- Dengyun Lu
- G01 - MEASURING TESTING
Information Patent Application
Jet flow adjustment method for rotary steerable downhole release
- Publication number 20230193714
- Publication date Jun 22, 2023
- CHINA NATIONAL PETROLEUM CORPORATION
- Jichuan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Application
Easy-to-clean visual graMethod for remotely shutting down downhole...
- Publication number 20230193729
- Publication date Jun 22, 2023
- CHINA NATIONAL PETROLEUM CORPORATION
- Jing Bai
- E21 - EARTH DRILLING MINING
Information Patent Application
Dual-speed dual - core enhanced drilling equipment
- Publication number 20210198950
- Publication date Jul 1, 2021
- CNPC Chuanqing Drilling Engineering Company Limited
- LIEXIANG HAN
- E21 - EARTH DRILLING MINING