Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11993743 | Double-chamber microcapsule for drilling fluid and self-reversing reversible water-in-oil drilling fluid and preparation method thereof | Lu Liu | 2024-05-28 |
| 11639460 | Nanometer self-locking bentonite film-forming agent, method for preparing the same, and film-forming drilling fluid | Wenxin Dong, Jinyang Fan, Wenhao Liu, Siyi Chen, HanYi Wang +8 more | 2023-05-02 |
| 11397839 | Method of particle size distribution of particulate bridging lost circulation materials for fractured leakage | Gui WANG, Shengjiang XU, Hu Jia, Tianshou Ma | 2022-07-26 |
| 10920123 | Thermosensitive self-plugging bentonite and preparation method thereof and water-based drilling fluid | Wenxin Dong | 2021-02-16 |
| 10336931 | Use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid | Guancheng Jiang, Deli Gao, Guangchang Ma, Jinsheng Sun, Xi Wang +8 more | 2019-07-02 |
| 10308857 | Super-amphiphobic composite material and use of the same as inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids | Guancheng Jiang, Xiaoxiao Ni, Lili Yang, Guangchang Ma, Chunyao Peng +8 more | 2019-06-04 |
| 10287475 | Shale inhibitor and preparation method thereof, water-based drilling fluid, and shale gas drilling and extraction method | Hao Wang | 2019-05-14 |