Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11072738 | Environment-friendly high-temperature resistant water-based drilling fluid plugging anti-sloughing agent, preparation method thereof and the water-based drilling fluid | Xianbin Huang, Kaihe Lv, Jingping Liu, Yingrui Bai, Jintang Wang +1 more | 2021-07-27 |
| 11053424 | Temperature-resistant calcium-resistant water-based drilling fluid for oil and gas reservoir protection and use thereof | Yuping Yang, Jingping Liu, Min Chang, Long Li, Jinhong Wang +1 more | 2021-07-06 |