Wanguang SONG

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Sanhe, CN

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Patents Grantslast 30 patents

Information Patent Grant
System for sampling from formation while drilling
- Patent number 10,180,064
- Issue date Jan 15, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pup joint for releasing sidewall contact of stratigraphic test devi...
- Patent number 9,982,816
- Issue date May 29, 2018
- China National Offshore Oil Corporation
- Xiaofei Qin
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
System for Sampling from Formation While Drilling
- Publication number 20160362977
- Publication date Dec 15, 2016
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
Pup Joint for Releasing Sidewall Contact of Stratigraphic Test Devi...
- Publication number 20150316183
- Publication date Nov 5, 2015
- CHINA NATIONAL OFFSHORE OIL CORP
- Xiaofei QIN
- E21 - EARTH DRILLING MINING