Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11859126 | Method of using crosslinked guar polymer as fluid loss pill | — | 2024-01-02 |
| 9868890 | Method of increasing the density of a well treatment brine | — | 2018-01-16 |
| 7712533 | Method for treating a subterranean formation with water-in-oil emulsion | Qi Qu, Richard F. Stevens | 2010-05-11 |
| 7455111 | Compositions for treating a well penetrating a subterranean formation and uses thereof | Qi Qu, Richard F. Stevens | 2008-11-25 |
| 7188676 | Method for displacing oil base drilling muds and/or residues from oil base drilling mud using water-in-oil emulsion | Qi Qu, Richard F. Stevens | 2007-03-13 |
| 7144844 | Method of using viscoelastic vesicular fluids to enhance productivity of formations | Qi Qu | 2006-12-05 |
| 7115546 | Acid diverting system containing quaternary amine | Qi Qu | 2006-10-03 |