Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11162010 | Nanometer plugging water-based drilling fluid and preparation method and use thereof | Yang Bai, Guojun Li, Cheng Li, Hao Zhang, Yan Cheng | 2021-11-02 |
| 10989576 | Method and system for obtaining micro-nano level fracture model and evaluating plugging performance of drilling fluid | Yang Bai, Yan Cheng, Hongbo Li, Cheng Li, Hao Zhang +3 more | 2021-04-27 |
| 10928300 | Experimental device and experimental method for testing the lubricity in horizontal well drilling with a cuttings bed taken into consideration | Junlin SU, Jinjun Huang, Fang Li | 2021-02-23 |