Dachuan Liang

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Chengdu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Plugging agent for improving formation bearing capacity and prepara...
- Patent number 10,017,679
- Issue date Jul 10, 2018
- SOUTHWEST PETROLEUM UNIVERSITY
- Pingya Luo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
High-temperature cross-linking deep-well drilling fluid and prepara...
- Patent number 10,005,946
- Issue date Jun 26, 2018
- SOUTHWEST PETROLEUM UNIVERSITY
- Yang Bai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Deep-well polysulfonate drilling fluid and preparation method thereof
- Patent number 9,926,482
- Issue date Mar 27, 2018
- SOUTHWEST PETROLEUM UNIVERSITY
- Yang Bai
- E21 - EARTH DRILLING MINING