Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331618 | System and method for carbon dioxide storage and geothermal heat mining in depleted gas, gas condensate or oil reservoirs | Kai Zhang | 2025-06-17 |
| 11795784 | System and method for carbon dioxide sequestration in offshore saline aquifers as carbon dioxide hydrate | Kai Zhang | 2023-10-24 |
| 8857523 | Downhole multiple well | — | 2014-10-14 |
| H1685 | Drilling fluid | Arthur H. Hale, Louis A. Bernardi, Jr. | 1997-10-07 |
| 5460225 | Gravel packing process | Louis A. Bernardi, Jr. | 1995-10-24 |
| 5392855 | Method to prepare polymer solutions for down-hole applications | Louis A. Bernardi, Jr., David A. Cole | 1995-02-28 |
| 5354786 | Fluid loss control composition | — | 1994-10-11 |
| 5251699 | Low-viscosity gravel packing process | Louis A. Bernardi, Jr. | 1993-10-12 |
| 5184679 | Gravel packing process | — | 1993-02-09 |
| 5158139 | Well completion method and fluid loss control composition | — | 1992-10-27 |
| 5069802 | Gas flood surfactants enriched in olefin disulfonate | John K. Borchardt | 1991-12-03 |
| 5031698 | Steam foam surfactants enriched in alpha olefin disulfonates for enhanced oil recovery | John K. Borchardt | 1991-07-16 |
| 4957646 | Steam foam surfactants enriched in alpha olefin disulfonates for enhanced oil recovery | John K. Borchardt | 1990-09-18 |
| 4911238 | Gas flooding with surfactants enriched in olefin disulfonate | John K. Borchardt | 1990-03-27 |
| 4727938 | Trona-enhanced steam foam oil recovery process | — | 1988-03-01 |
| 4617995 | Dual gradient steam foam oil displacement process | — | 1986-10-21 |
| 4609044 | Alkali-enhanced steam foam oil recovery process | — | 1986-09-02 |
| 4601337 | Foam drive oil displacement with outflow pressure cycling | Stephen M. O'Brien | 1986-07-22 |
| 4597442 | Reservoir preflushing process for increasing the rate of surfactant transport in displacing oil with injected steam and steam-foaming surfactant | Richard E. Dilgren, George J. Hirasaki | 1986-07-01 |