Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6631764 | Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids | Colin Price-Smith, Raymond J. Tibbles, Shrihari Kelkar, Mark Brady, Elizabeth Morris | 2003-10-14 |
| 6571875 | Circulation tool for use in gravel packing of wellbores | Harold Steven Bissonnette, Jake A. Danos, Colin Price-Smith | 2003-06-03 |
| 6342467 | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Frank F. Chang | 2002-01-29 |
| 6165947 | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Frank F. Chang | 2000-12-26 |
| 6140277 | Fluids and techniques for hydrocarbon well completion | Raymond J. Tibbles, Frank F. Chang, Diankui Fu, Jonathan Mark Davison, Elizabeth Morris +2 more | 2000-10-31 |
| 5981447 | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Frank F. Chang | 1999-11-09 |