Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11898099 | Fracturing propping agent and preparation method of fracturing propping agent by using oil sludge produced in exploited of oil and gas field | Zhanqing Qu, Xinwu Zhu, Zuochen Li, Yuping Fan, Wei Liu +2 more | 2024-02-13 |
| 10266617 | Cationic copolymer and use thereof in lost circulation additive | Mengyun Zhao, Jianzheng Su, Rusheng Zhang, Qiulian Long, Suobing Zhang +3 more | 2019-04-23 |
| 8623791 | Copolymer and preparation method and application thereof | Xiaohua Yang, Lin Wang, Jiafen Li, Xiaolin Qian, Xianguang Wang +5 more | 2014-01-07 |
| 7323434 | Electropositive production well treating fluid and method of preparing the same | Rushan Liu, Weiping Xu, Zengchen Guan, Peizhi Yu, Xiushan Liu +5 more | 2008-01-29 |