Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9902890 | Drilling fluid additive composition suitable for coal-bed gas wells, and water-based drilling fluid and use thereof | Guancheng Jiang, Yinbo He, Chong Liu, Lili Yang, Yong Wang +7 more | 2018-02-27 |
| 9890318 | Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging | Guancheng Jiang, Chong Liu, Yinbo He, Lili Yang, Yong Wang +10 more | 2018-02-13 |
| 9790415 | Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells | Guancheng Jiang, Yinbo He, Lili Yang, Fan Liu, Yuxiu An +7 more | 2017-10-17 |