Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10876034 | Modified silicon dioxide material of fluorocarbon active agent type super-amphiphobic cutting-carrying agent suitable for water-based drilling fluid and preparation method thereof | Xiaoxiao Ni, Yinbo He, Lili Yang, Tengfei Dong, Kun Zhang +7 more | 2020-12-29 |
| 10865337 | Multi-functional weighting agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof | Yang Bai, Pingya Luo, Yan Cheng, Jinsheng Sun | 2020-12-15 |
| 10533122 | Strong plugging drilling fluid composition and preparation method thereof, and use thereof | Yang Bai, Cheng Li, Guojun Li, Yan Cheng, Hao Zhang +2 more | 2020-01-14 |