Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11499081 | Stabilized water-dispersible latex additives for drilling fluids | Justin Porter | 2022-11-15 |
| 11155748 | Star polymers and methods of use for downhole fluids | Wen Shao Cao, Grant Mackenzie | 2021-10-26 |
| 10858567 | Invert emulsions having a non-aqueous based internal phase containing dissolved salts | Reza Ettehadi Osgouei, Rosa Swartwout | 2020-12-08 |
| 10400152 | Liquid loaded powders made from hybrid calcium carbonate for oil and gas drilling fluids | — | 2019-09-03 |
| 10280356 | Electrically conductive oil-based fluids | Jianzhong Yang, Alyssa Renee Garcia, Joseph J. Arensdorf, Qusai Darugar | 2019-05-07 |
| 10221636 | Polymer-modified asphalt for drilling fluid applications | Ian L. Everhard | 2019-03-05 |
| 8716197 | Lubricating compositions for use with downhole fluids | Michael Otto | 2014-05-06 |
| 8627902 | Estimating drill cutting origination depth using marking agents | Aaron C. Hammer | 2014-01-14 |
| 8273689 | Method for lubricating and/or reducing corrosion of drilling equipment | Michael Otto, James Norfleet, Kalyan C. Singamshetty | 2012-09-25 |
| 8053394 | Drilling fluids with redispersible polymer powders | Tao Xiang, Donald C. Krause | 2011-11-08 |
| 7749943 | Method and drilling fluid systems and lost circulation pills adapted to maintain the particle size distribution of component latex particles before and after freezing of the latex particles in the presence of water | Tao Xiang | 2010-07-06 |
| 7651980 | High temperature filtration control using water based drilling fluid systems comprising water soluble polymers | Michael A. Jarrett | 2010-01-26 |
| 7393813 | Water-based drilling fluids using latex additives | William S. Halliday, David Schwertner, Tao Xiang | 2008-07-01 |
| 7271131 | Fluid loss control and sealing agent for drilling depleted sand formations | William S. Halliday, David Schwertner, Tao Xiang | 2007-09-18 |
| 6790812 | Acid soluble, high fluid loss pill for lost circulation | William S. Halliday, Michael A. Jarrett, Michelle Carr | 2004-09-14 |
| 6703351 | Water-based drilling fluids using latex additives | Calvin J. Stowe, II, Ronald G. Bland, Tao Xiang, Saddock Benaissa | 2004-03-09 |
| 6635604 | Low molecular weight water soluble organic compounds as crystallization point suppressants in brines | William S. Halliday | 2003-10-21 |
| 6204224 | Polyalkyl methacrylate copolymers for rheological modification and filtration control for ester and synthetic based drilling fluids | Lirio Quintero, Shannon Stocks-Fischer, William R. Bradford | 2001-03-20 |
| 6194216 | Method for determination of amine-based additives in drilling fluid filtrates | Nyal S. Walker, Michael A. Jarrett | 2001-02-27 |
| 6165945 | Blends of glycol derivatives as gas hydrate inhibitors in water base drilling, drill-in, and completion fluids | William S. Halliday, Mark R. Smalling, Ronald G. Bland | 2000-12-26 |
| 6080704 | Glycols as gas hydrate inhibitors in drilling, drill-in, and completion fluids | William S. Halliday, Mark R. Smalling | 2000-06-27 |
| 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, Geoffrey Robinson, Ronald G. Bland +2 more | 1999-07-06 |
| 5837655 | Purified paraffins as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids | William S. Halliday | 1998-11-17 |
| 5141920 | Hydrocarbon invert emulsions for use in well drilling operations | Ronald G. Bland | 1992-08-25 |
| 5057234 | Non-hydrocarbon invert emulsions for use in well drilling operations | Ronald G. Bland | 1991-10-15 |