Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10767474 | Surfactant selection methods for wetting alteration in subterranean formations | Lijie Feng | 2020-09-08 |
| 10696894 | Methods of treating subterranean formations including sequential use of at least two surfactants | Ali Alwattari, Jeremy Holtsclaw | 2020-06-30 |
| 10640698 | Ethoxylated amines for use in subterranean formations | Yang Peng, Zhiwei Yue, Kai He, Jayant Rane | 2020-05-05 |
| 10590333 | Cationic multiple quaternary ammonium-based surfactants for enhancing production in subterranean formations | Kai He, Funian Zhao, Liangwei Qu | 2020-03-17 |