Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7939474 | Wellbore fluids containing additives for removing a filter cake and methods of using the same | Matthew E. Blauch, David W. Ritter, R. Ashley Donaldson | 2011-05-10 |
| 7299876 | Viscosified treatment fluids and associated methods of use | Paul D. Lord, Rodney B. Waltman, David W. Ritter | 2007-11-27 |
| 7222672 | Wellbore fluids containing additives for removing a filter cake and methods of using the same | Matthew E. Blauch, David W. Ritter, R. Ashley Donaldson | 2007-05-29 |
| 7165617 | Viscosified treatment fluids and associated methods of use | Paul D. Lord, Rodney B. Waltman, David W. Ritter | 2007-01-23 |
| 7108083 | Apparatus and method for completing an interval of a wellbore while drilling | Floyd R. Simonds, Morris W. Cox, Terry Dailey, Tommie A. Freeman, Jiten Chatterji +8 more | 2006-09-19 |
| 7090017 | Low cost method and apparatus for fracturing a subterranean formation with a sand suspension | Donald Justus, David W. Ritter | 2006-08-15 |
| 6766862 | Expandable sand control device and specialized completion system and method | Jiten Chatterji, R. Ashley Donaldson, Ronald Glen Dusterhoft, Tommy Frank Grigsby, Travis Hailey +4 more | 2004-07-27 |
| 6564870 | Method and apparatus for completing wells with expanding packers for casing annulus formation isolation | Tommy Frank Grigsby | 2003-05-20 |
| 6543545 | Expandable sand control device and specialized completion system and method | Jiten Chatterji, R. Ashley Donaldson, Ronald Glen Dusterhoft, Tommy Frank Grigsby, Travis Hailey +4 more | 2003-04-08 |
| 6070664 | Well treating fluids and methods | Eldon D. Dalrymple, Ronald Glen Dusterhoft, Albert L. Wagner | 2000-06-06 |
| 5960880 | Unconsolidated formation stimulation with sand filtration | Philip D. Nguyen, Jimmie D. Weaver, Hazim H. Abass, Steven F. Wilson, R. Clay Cole +1 more | 1999-10-05 |
| 5558161 | Method for controlling fluid-loss and fracturing high permeability subterranean formations | Mary Anne Hardy, David E. McMechan, William E. Martch, Ronald Glen Dusterhoft | 1996-09-24 |