Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10647902 | Temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof | Weian Huang, Jingwen Wang, Ming Lei, Jiaqi Zhang, Gongrang Li +2 more | 2020-05-12 |
| 9845421 | Encapsulating agent and preparing method thereof, and drilling fluid for petroleum drilling | Xin Zhao, Hanyi ZHONG, Wei'an Huang, Yongjun Zhang, Guowe Zhou | 2017-12-19 |