Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6855671 | Water based fluids comprising multivalent salts and low molecular weight, low charge cationic polyacrylamide copolymers | James Norfleet, Michael A. Jarrett, Tao Xiang, Frank E. Evans | 2005-02-15 |
| 6355600 | Shale stabilizing drilling fluids comprising calcium chloride and low molecular weight low charge cationicpolyacrylamide copolymers | James Norfleet, Michael A. Jarrett, Tao Xiang, Frank E. Evans | 2002-03-12 |
| 6194355 | Use of alkoxylated surfactants and aluminum chlorohydrate to improve brine-based drilling fluids | Michael A. Jarrett, Harold R. Krause, John C. Welch, Allen D. Gabrysch | 2001-02-27 |