Haijun Yang

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Oil and gas zone effectiveness evaluation method and apparatus
- Patent number 11,193,372
- Issue date Dec 7, 2021
- PetroChina Company Limited
- Caineng Zou
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
NANOEMULSION AND METHOD FOR PREPARATION THEREOF, AND HIGH-TEMPERATU...
- Publication number 20240360354
- Publication date Oct 31, 2024
- CHINA NATIONAL PETROLEUM CORPORATION
- Lili YAN
- E21 - EARTH DRILLING MINING
Information Patent Application
OIL AND GAS ZONE EFFECTIVENESS EVALUATION METHOD AND APPARATUS
- Publication number 20190100997
- Publication date Apr 4, 2019
- Petrochina Company Limited
- Caineng Zou
- E21 - EARTH DRILLING MINING