Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7595282 | Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures | Ian D. Robb, Bobby J. Burns | 2009-09-29 |
| 7584791 | Methods for reducing the viscosity of treatment fluids comprising diutan | Ian D. Robb, Lulu Song | 2009-09-08 |
| 7571766 | Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage | Jim B. Surjaatmadja, Thomas D. Welton | 2009-08-11 |
| 7547665 | Acidic treatment fluids comprising scleroglucan and/or diutan and associated methods | Thomas D. Welton, Ian D. Robb | 2009-06-16 |
| 7475728 | Treatment fluids and methods of use in subterranean formations | Larry S. Eoff, Trinidad Munoz | 2009-01-13 |
| 7334640 | Methods for reducing the viscosity of treatment fluids | Robert E. Hanes, Jr., David Griffin, Keith A. Frost, John M. Terracina | 2008-02-26 |
| 7261160 | Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids | Thomas D. Welton, Rick D. Gdanski | 2007-08-28 |
| 7262154 | Methods and compositions for breaking viscosified fluids | David Griffin, Robert E. Hanes, Jr. | 2007-08-28 |
| 7216704 | Methods and compositions for breaking viscosified fluids | Robert E. Hanes, Jr., David Griffin | 2007-05-15 |
| 7159658 | Methods and compositions for treating subterranean zones | Keith A. Frost, Bradley L. Todd, Ian D. Robb | 2007-01-09 |
| 6987083 | Xanthan gels in brines and methods of using such xanthan gels in subterranean formations | Max L. Phillippi | 2006-01-17 |
| 5427699 | Low viscosity acid-in-oil emulsions and methods | William G. F. Ford, Keith H. Hollenbeak | 1995-06-27 |
| 5355958 | Low viscosity acid-in-oil emulsions and methods | William G. F. Ford, Keith H. Hollenbeak | 1994-10-18 |
| 4622155 | Method for fracturing subterranean formations | Lawrence E. Harris, Marlin D. Holtmyer | 1986-11-11 |