Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10266744 | Accelerator used for drilling fluids, water-based drilling fluid and usage thereof | Guancheng Jiang, Deli Gao, Shuo Zhang, Xianzhu Wu, Liexiang Han +9 more | 2019-04-23 |
| 10253237 | Film former used for coal-bed gas well drilling and preparation method thereof, drilling fluid and usage thereof | Guancheng Jiang, Deli Gao, Shuo Zhang, Xianzhu Wu, Liexiang Han +9 more | 2019-04-09 |