Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11542425 | Leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof | Yang Bai, Jing Zhang, Wenzhe Li, Pingya Luo, Feng-Wei Dai +4 more | 2023-01-03 |
| 11485896 | Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof | Yang Bai, Daoxiong Li, Pingya Luo, Wen Xu, Wenzhe Li +3 more | 2022-11-01 |
| 11453814 | Pressure-bearing plugging agent and preparation method and use thereof | Yang Bai, Pingya Luo, Haibo Liang, Wen Xu, Wenzhe Li +4 more | 2022-09-27 |
| 11396621 | Pressure-bearing plugging composition, pressure-bearing plugging slurry and preparation method and use thereof | Yang Bai, Pingya Luo, Jinsheng Sun, Haibo Liang, Wen Xu +4 more | 2022-07-26 |
| 11345841 | Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof | Yang Bai, Pingya Luo, Wenzhe Li, Feng-Wei Dai, Gang Xie +3 more | 2022-05-31 |