Issued Patents 2025
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12384953 | Strongly adsorbed hyper-branched filtrate reducer for water-based drilling fluid with resistance to 240° C. and saturated salinity, preparation method therefor and use thereof | Jinsheng Sun, Jingping Liu, Fengbao Liu, Meichun Li, Jiafeng Jin +3 more | 2025-08-12 |
| 12378458 | Phase change microcapsule for drilling fluid cooling and its preparation method and application | Mei Li, Ziyan Li, Jinsheng Sun, Jingping Liu, Yingrui Bai +4 more | 2025-08-05 |
| 12269985 | High density environmentally friendly polymer water-based drilling fluid with resistance to 240° C. and saturated salts, preparation method therefor and use thereof | Jinsheng Sun, Jingping Liu, Meichun Li, Jiafeng Jin, Jintang Wang +2 more | 2025-04-08 |
| 12264279 | High-temperature and high-salt resistant hyperbranched lubricant for water-based drilling fluid, and preparation and application thereof | Jian Li, Jinsheng Sun, Jingping Liu, Meichun Li, Yingrui Bai +4 more | 2025-04-01 |
| 12215274 | Resin slurry plugging system suitable for fractured-vuggy formation and preparation and use thereof | Yingrui Bai, Jingbin Yang, Jinsheng Sun, Yang Bai, Ren Wang +3 more | 2025-02-04 |