Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865337 | Multi-functional weighting agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof | Yang Bai, Pingya Luo, Jinsheng Sun, Guancheng Jiang | 2020-12-15 |
| 10829679 | Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereof | Yang Bai, Pingya Luo, Cheng Li, Guojun Li, Hao Zhang | 2020-11-10 |
| 10829681 | Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereof | Yang Bai, Pingya Luo, Cheng Li, Hao Zhang, Guojun Li | 2020-11-10 |
| 10533122 | Strong plugging drilling fluid composition and preparation method thereof, and use thereof | Yang Bai, Cheng Li, Guojun Li, Hao Zhang, Guancheng Jiang +2 more | 2020-01-14 |