Issued Patents All Time
Showing 26–50 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307875 | Matrix acidizing in sandstone formations | — | 1994-05-03 |
| 5297628 | Simultaneous matrix acidizing using acids with different densities | — | 1994-03-29 |
| 5295539 | Two well hydrocarbon producing method using multiple fractures | Malcolm K. Strubhar | 1994-03-22 |
| 5271463 | Method of recovering additional oil from fines and residue recovered from viscous oil reservoirs | — | 1993-12-21 |
| 5261489 | Two well hydrocarbon producing method | Malcolm K. Strubhar | 1993-11-16 |
| 5238067 | Improved means of fracture acidizing carbonate formations | — | 1993-08-24 |
| 5228510 | Method for enhancement of sequential hydraulic fracturing using control pulse fracturing | Malcolm K. Strubhar | 1993-07-20 |
| 5226495 | Fines control in deviated wells | — | 1993-07-13 |
| 5224541 | Use of profile control agents to enhance water disposal | — | 1993-07-06 |
| 5207778 | Method of matrix acidizing | — | 1993-05-04 |
| 5159979 | Method for limiting downward growth of induced hydraulic fractures | — | 1992-11-03 |
| 5123488 | Method for improved displacement efficiency in horizontal wells during enhanced oil recovery | — | 1992-06-23 |
| 5108226 | Technique for disposal of drilling wastes | — | 1992-04-28 |
| 5056598 | Method of protecting casing during high pressure well stimulation | — | 1991-10-15 |
| 5042581 | Method for improving steam stimulation in heavy oil reservoirs | Roger C. Smith | 1991-08-27 |
| 5036917 | Method for providing solids-free production from heavy oil reservoirs | Roger C. Smith | 1991-08-06 |
| 5036918 | Method for improving sustained solids-free production from heavy oil reservoirs | Roger C. Smith | 1991-08-06 |
| 5005645 | Method for enhancing heavy oil production using hydraulic fracturing | Roger C. Smith | 1991-04-09 |
| 4982786 | Use of CO.sub.2 /steam to enhance floods in horizontal wellbores | — | 1991-01-08 |
| 4979565 | Method to improve well performance in gravel packed wells | — | 1990-12-25 |
| 4951751 | Diverting technique to stage fracturing treatments in horizontal wellbores | — | 1990-08-28 |
| 4938286 | Method for formation stimulation in horizontal wellbores using hydraulic fracturing | — | 1990-07-03 |
| 4917185 | Method to improve matrix acidizing in carbonates | Lloyd G. Jones, Paul Shu | 1990-04-17 |
| 4899818 | Method to improve use of polymers for injectivity profile control in enhanced oil recovery | Mark L. Hoefner, Paul Shu | 1990-02-13 |
| 4899819 | Method for suspending wells | Randy D. Hazlett | 1990-02-13 |