Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10858571 | High-temperature retarder suitable for oil and gas well cementation, preparation method thereof and cementing slurry | Chengwen Wang, Wei Zhou, Ruihe Wang, Jinsheng Sun, Yong Li +1 more | 2020-12-08 |
| 10655048 | Oil well cement settlement stabilizer for high-temperature cementing of oil and gas wells and preparation method thereof, and cement slurry | Chengwen Wang, Huan Wang, Zizhen Wang, Ruihe Wang, Xin Chen +1 more | 2020-05-19 |