Issued Patents All Time
Showing 1–25 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6189615 | Application of a stabilized polymer gel to an alkaline treatment region for improved hydrocarbon recovery | — | 2001-02-20 |
| 6103772 | Foamed gel for permeability reduction or mobility control in a subterranean hydrocarbon-bearing formation | — | 2000-08-15 |
| 6025304 | Permeability or fluid mobility reduction treatment for a hydrocarbon-bearing formation using a dual molecular weight polymer gel | George P. Southwell | 2000-02-15 |
| 5842519 | Process for reducing hydrocarbon leakage from a subterranean storage cavern | — | 1998-12-01 |
| 5834406 | Foamed gel for permeability reduction or mobility control in a subterranean hydrocarbon-bearing formation | — | 1998-11-10 |
| 5816323 | Permeability reduction in a hydrocarbon-bearing formation using a stabilized polymer gel | — | 1998-10-06 |
| 5780395 | Foam for improving sweep efficiency in subterranean oil-bearing formations | — | 1998-07-14 |
| 5711376 | Hydraulic fracturing process | — | 1998-01-27 |
| 5706895 | Polymer enhanced foam workover, completion, and kill fluids | — | 1998-01-13 |
| 5682951 | Foamed gel completion, workover, and kill fluid | — | 1997-11-04 |
| 5650379 | Process for reducing permeability in a subterranean hydrocarbon-bearing formation utilizing a gelation solution having a controlled gelation rate | — | 1997-07-22 |
| 5609208 | pH dependent process for retarding the gelation rate of a polymer gel utilized to reduce permeability in or near a subterranean hydrocarbon-bearing formation | — | 1997-03-11 |
| 5513712 | Polymer enhanced foam drilling fluid | — | 1996-05-07 |
| 5495891 | Foamed gel employed as a drilling fluid, a lost circulation fluid, or a combined drilling/lost circulation fluid | — | 1996-03-05 |
| 5476145 | Selective placement of a permeability-reducing material in a subterranean interval to inhibit vertical flow through the interval | M. Marc Sengul | 1995-12-19 |
| 5462390 | Foamed gel for blocking fluid flow in soil | — | 1995-10-31 |
| 5431226 | Process for reducing permeability in a high-temperature subterranean hydrocarbon-bearing formation utilizing a decarboxylated crosslinking agent | — | 1995-07-11 |
| 5421411 | Process for reducing permeability in a subterranean hydrocarbon-bearing formation utilizing a gelation solution having a controlled gelation rate | — | 1995-06-06 |
| 5415229 | Hydrocarbon recovery process utilizing a gel prepared from a polymer and a preformed crosslinking agent | — | 1995-05-16 |
| 5372462 | Polymer enhanced foam for blocking fluid flow in soil | — | 1994-12-13 |
| 5358046 | Oil recovery process utilizing a supercritical carbon dioxide emulsion | Karl D. Dreher | 1994-10-25 |
| 5346008 | Polymer enhanced foam for treating gas override or gas channeling | — | 1994-09-13 |
| 5322125 | Foamed gels to reduce gas coning in matrix environments | — | 1994-06-21 |
| 5307878 | Polymer enhanced foams for reducing gas coning | — | 1994-05-03 |
| 5129457 | Enhanced liquid hydrocarbon recovery process | — | 1992-07-14 |