US3102587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent water-flood secondary recovery process
Assignee: Pure Oil Co
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Filing: 1959-12-14
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Granted: 1963-09-03
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Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Orrin C Holbrook
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A METHOD FOR RECOVERING OIL HAVING A VISCOSITY SIMILAR TO THAT OF WATER FROM AN UNDERGROUND RESERVOIR COMPRISING THE STEPS OF INJECTING INTO SAID RESERVOIR THROUGH AN INPUT WELL ONE AMOUNT OF SOLVENT EQUIVALENT TO 0.01 TO 0.30 RESERVOIR PORE VOLUME, DRIVING SAID SOLVENT THROUGH SAID RESERVOIR UNDER A PRESSURE OF NOT LESS THAN 300 P.S.I.
Claim 2
Independent Claim
56 words
A METHOD FOR RECOVERING OIL HAVING A VISCOSITY SIMILAR TO THAT OF WATER FROM AN UNDERGROUND RESERVOIR COMPRISING THE STEPS OF INJECTING INTO SAID RESERVOIR THROUGH AN INPUT WELL ONE AMOUNT OF SOLVENT EQUIVALENT TO 0.01 TO 0.30 RESERVOIR PORE VOLUME, DRIVING SAID SOLVENT THROUGH SAID RESERVOIR UNDER A PRESSURE OF NOT LESS THAN 300 P.S.I.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |