Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7439209 | Drilling fluid systems with improved fluid loss properties | Charles Perricone, George W. Bettge | 2008-10-21 |
| 6933262 | Controlled hydration of starch in high density brine dispersion | Gregory A. Mullen, Dave Clark | 2005-08-23 |
| 6403537 | Drilling fluid systems with improved fluid loss properties | Charles Perricone, George W. Bettge | 2002-06-11 |
| 5919738 | Fluids for use in drilling and completion operations comprising water insoluble colloidal complexes for improved rheology and filtration control | James Norfleet, Michael A. Jarrett, William M. Dye, Dennis K. Clapper, Geoffrey Robinson +2 more | 1999-07-06 |
| D405813 | Mixing vessel baffle | — | 1999-02-16 |
| 5602083 | Use of sized salts as bridging agent for oil based fluids | Allen D. Gabrysch | 1997-02-11 |