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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for identifying low permeable conglomerate dia...
Patent number
11,175,422
Issue date
Nov 16, 2021
PetroChina Company Limited
Yongqiang Qu
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and device of identifying fracture
Patent number
10,845,495
Issue date
Nov 24, 2020
PetroChina Company Limited
Chao Feng
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Method And Device Of Identifying Fracture
Publication number
20190041535
Publication date
Feb 7, 2019
Chao Feng
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD AND APPARATUS FOR IDENTIFYING LOW PERMEABLE CONGLOMERATE DIA...
Publication number
20190011584
Publication date
Jan 10, 2019
Petrochina Company Limited
Yongqiang QU
G01 - MEASURING TESTING