Yafeng JU

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Stratified waterflooding apparatus
- Patent number 11,008,830
- Issue date May 18, 2021
- PetroChina Company Limited
- Gaixing Hu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Layered water injection system and layered water injection method
- Patent number 10,890,059
- Issue date Jan 12, 2021
- PetroChina Company Limited
- Lingzhi Yang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
STRATIFIED WATERFLOODING APPARATUS
- Publication number 20200115991
- Publication date Apr 16, 2020
- Petrochina Company Limited
- Gaixing HU
- E21 - EARTH DRILLING MINING
Information Patent Application
LAYERED WATER INJECTION SYSTEM AND LAYERED WATER INJECTION METHOD
- Publication number 20190242226
- Publication date Aug 8, 2019
- Petrochina Company Limited
- Lingzhi YANG
- E21 - EARTH DRILLING MINING