Issued Patents 2022
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11525079 | Preparation method of fully adaptive modified nanographene plugging type anti-collapse drilling fluid and use thereof | Yang Bai, Dezhi Liu, Jing Zhang, Gang Xie, Feng-Wei Dai +1 more | 2022-12-13 |
| 11485896 | Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof | Yang Bai, Daoxiong Li, Wen Xu, Wenzhe Li, Lingfeng Wu +3 more | 2022-11-01 |
| 11453814 | Pressure-bearing plugging agent and preparation method and use thereof | Yang Bai, Lingfeng Wu, Haibo Liang, Wen Xu, Wenzhe Li +4 more | 2022-09-27 |
| 11441062 | Modified polyvinyl acetate and preparation method and use thereof and oil-based drilling fluid | Yang Bai, Chunyan Liu, Gang Xie, Danchao Huang, Dezhi Liu +3 more | 2022-09-13 |
| 11396621 | Pressure-bearing plugging composition, pressure-bearing plugging slurry and preparation method and use thereof | Yang Bai, Lingfeng Wu, 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, Lingfeng Wu, Wenzhe Li, Feng-Wei Dai, Gang Xie +3 more | 2022-05-31 |
| 11225594 | Drilling fluid for enhancing stratum pressure bearing capacity and preparation method and method of using thereof | Yang Bai, Hao Zhang, Cheng Li, Yan Cheng, Guojun Li +2 more | 2022-01-18 |