Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4753295 | Method for placing ball sealers onto casing perforations in a deviated portion of a wellbore | Gerard A. Gabriel | 1988-06-28 |
| 4716964 | Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion | Claude E. Cooke, Jr., Richard G. Sinclair, Michael M. Epstein | 1988-01-05 |
| 4526695 | Composition for reducing the permeability of subterranean formations | Claude E. Cooke, Jr., Richard G. Sinclair, Michael M. Epstein | 1985-07-02 |
| 4488599 | Method of controlling displacement of propping agent in fracturing treatments | Robert L. Graham | 1984-12-18 |
| 4421167 | Method of controlling displacement of propping agent in fracturing treatments | Robert L. Graham | 1983-12-20 |
| 4407368 | Polyurethane ball sealers for well treatment fluid diversion | — | 1983-10-04 |
| 4387769 | Method for reducing the permeability of subterranean formations | Claude E. Cooke, Jr., Richard G. Sinclair, Michael M. Epstein | 1983-06-14 |
| 4287952 | Method of selective diversion in deviated wellbores using ball sealers | — | 1981-09-08 |
| 4244425 | Low density ball sealers for use in well treatment fluid diversions | — | 1981-01-13 |
| 4195690 | Method for placing ball sealers onto casing perforations | Christopher M. Shaughnessy | 1980-04-01 |
| 4194561 | Placement apparatus and method for low density ball sealers | Charles O. Stokley | 1980-03-25 |
| 4187909 | Method and apparatus for placing buoyant ball sealers | — | 1980-02-12 |