Shanyan Zhang

Follow

Person

Beijing City, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Borehole wall resistance increasing apparatus for improving energy...
- Patent number 11,428,065
- Issue date Aug 30, 2022
- PetroChina Company Limited
- Xinglong Chen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR OIL PRODUCTION BY INCREASING RESISTANCE OF...
- Publication number 20210040827
- Publication date Feb 11, 2021
- Xinglong Chen
- E21 - EARTH DRILLING MINING