Beijing
China
5
2017-12-07
The entities that hold a legal rights for patent applications filed by inventor PENG Shuanglei:
Shuanglei PENG from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Drilling fluid additive composition, and oil-based drilling fluid and use thereof
#2 | 2017-12-07Nano-hybrid lubricant and method thereof, and oil-based drilling fluid
#3 | 2017-08-29Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof
#4 | 2016-12-27Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid
#5 | 2016-11-01Drilling fluid additive composition and high temperature resistant clay-free whole-oil-based drilling fluid
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