Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4609474 | Aqueous organic sulfonate surfactant systems containing phenylethersulfonate cosurfactants | Hendrik Tijmen Verkouw, Theodorus A. B. M. Bolsman | 1986-09-02 |
| 4502538 | Polyalkoxy sulfonate, CO.sub.2 and brine drive process for oil recovery | Scott Lee Wellington, Eugene F. Lutz, David B. Bright | 1985-03-05 |
| 4493371 | Recovering oil by injecting aqueous alkali, cosurfactant and gas | Lawrence James Bielamowicz, David R. Thigpen | 1985-01-15 |
| 4279305 | Process for stimulating a well with a saline surfactant sulfate, alkanol and acid system | Randolph H. Knapp, Jimmie B. Lawson, David R. Thigpen, Harold J. Hill | 1981-07-21 |
| 4232741 | Temporarily plugging a subterranean reservoir with a self-foaming aqueous solution | Edwin A. Richardson, Ronald F. Scheuerman, David C. Berkshire, James H. Lybarger | 1980-11-11 |
| 4203491 | Chemical flood oil recovery with highly saline reservoir water | — | 1980-05-20 |