Inventor · disambiguated record
Haifang Sun
Also filed as: SUN HAIFANG
10 granted patents·69 citations·filing 2011–2017
86Inventor score
Top patents by PatentIndex Score
10 records- 0194US9890318B1Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure pluggingUNIV CHINA PETROLEUM BEIJING·Filed 2017·Granted Feb 13, 2018·15 cites·20 claims
- 0294US9790415B1Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wellsCHINA UNIV OF PETROLEUM (BEIJING)·Filed 2017·Granted Oct 17, 2017·22 cites·20 claims
- 0394US9783725B1Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wellsCHINA UNIV OF PETROLEUM (BEIJING)·Filed 2017·Granted Oct 10, 2017·14 cites·19 claims
- 0490US9783726B1Environment-friendly water-based drilling fluid applicable to horizontal shale gas wellsCHINA UNIV OF PETROLEUM (BEIJING)·Filed 2017·Granted Oct 10, 2017·6 cites·20 claims
- 0578US9790417B1High-density water-based drilling fluid suitable for horizontal shale gas wellsCHINA UNIV OF PETROLEUM (BEIJING)·Filed 2017·Granted Oct 17, 2017·2 cites·20 claims
- 0674US9902890B1Drilling fluid additive composition suitable for coal-bed gas wells, and water-based drilling fluid and use thereofUNIV CHINA PETROLEUM BEIJING·Filed 2017·Granted Feb 27, 2018·1 cites·19 claims
- 0772US9834717B1Drilling fluid additive composition and pseudo oil-based drilling fluid suitable for horizontal shale gas wellsCHINA UNIV OF PETROLEUM (BEIJING)·Filed 2017·Granted Dec 5, 2017·1 cites·19 claims
- 0872US9638031B2Method of controlling well bore pressure based on model prediction control theory and systems theoryLI ZHILIN·Filed 2011·Granted May 2, 2017·8 cites·6 claims
- 0950US10030188B2Nano-hybrid lubricant and method thereof, and oil-based drilling fluidUNIV CHINA PETROLEUM BEIJING·Filed 2017·Granted Jul 24, 2018·0 cites·17 claims
- 1046US10000684B2Drilling fluid additive composition, and oil-based drilling fluid and use thereofUNIV CHINA PETROLEUM BEIJING·Filed 2017·Granted Jun 19, 2018·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →