Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9598627 | Fluid loss additives and methods of making and using same | Jeffery R. Harris | 2017-03-21 |
| 9353306 | Viscoelastic surfactant based wellbore fluids and methods of use | Charles Svoboda, LaTosha Moore | 2016-05-31 |
| 9328280 | Additives for oil-based drilling fluids | Marshall D. Bishop, Willie P. Reneau, John E. Anderson | 2016-05-03 |
| 9034800 | Fluid loss additives and methods of making and using same | Jeffery R. Harris | 2015-05-19 |
| 8937034 | Viscoelastic surfactant based wellbore fluids and methods of use | Charles Svoboda, LaTosha Moore | 2015-01-20 |
| 8871097 | Reclamation of formate brines | Hui Zhang, Robert L. Horton, Charles Svoboda | 2014-10-28 |
| 8575072 | Fluid loss additives and methods of making and using same | Jeffery R. Harris | 2013-11-05 |
| 7152697 | Delayed phase changing agent for invert emulsion drilling fluid | Robert L. Horton, Bethicia B. Prasek, Taylor Green, Mark Luyster, Steve Mason | 2006-12-26 |
| 6855671 | Water based fluids comprising multivalent salts and low molecular weight, low charge cationic polyacrylamide copolymers | James Norfleet, Michael A. Jarrett, Patricia A. Potts, Tao Xiang | 2005-02-15 |
| 6355600 | Shale stabilizing drilling fluids comprising calcium chloride and low molecular weight low charge cationicpolyacrylamide copolymers | James Norfleet, Michael A. Jarrett, Patricia A. Potts, Tao Xiang | 2002-03-12 |