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Patents Grantslast 30 patents

Information Patent Grant
Drilling casing and method of performing fast drilling and completi...
- Patent number 10,989,036
- Issue date Apr 27, 2021
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Chuanliang Yan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device and working method for drilling hydrate micro-borehole and p...
- Patent number 10,954,758
- Issue date Mar 23, 2021
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Chuanliang Yan
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DEVICE AND WORKING METHOD FOR DRILLING HYDRATE MICRO-BOREHOLE AND P...
- Publication number 20210062620
- Publication date Mar 4, 2021
- China University of Petroleum (East China)
- Chuanliang YAN
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILLING CASING AND METHOD OF PERFORMING FAST DRILLING AND COMPLETI...
- Publication number 20210025268
- Publication date Jan 28, 2021
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Chuanliang YAN
- E21 - EARTH DRILLING MINING