Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9771509 | Polymer elastic particle reservoir protecting agent and drilling fluid containing the same | Kaihe Lv, Jingping Liu | 2017-09-26 |
| 9701884 | Nanometer film structured reservoir protecting agent, drilling fluid containing the same and use thereof in low-permeability reservoirs | Kaihe Lv, Jingping Liu | 2017-07-11 |
| 9683160 | Composition comprising a nanometer film structured reservoir protecting agent and a water block preventing agent, and drilling fluid containing the same and use thereof for drilling in low-permeability reservoirs | Jingping Liu, Kaihe Lv | 2017-06-20 |