Patent US3275075A successfully refreshed from Google Patents.
US3275075A
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Viscosity control in petroleum recovery
Assignee: Marathon Oil Co
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Filing: 1965-04-27
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Granted: 1966-09-27
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 William B Gogarty
- 👤 Russell W Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:40
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS COMPRISING ADDING TO A SOLUBLE OIL A PREDETERMINED AMOUNT OF AQUEOUS DILUENT SUFFICIENT TO FORM A MICROEMULSION OF PREDETERMINED VISCOSITY, INJECTING SAID MICROEMULSION INTO A SUBTERRANEAN OIL-BEARING FORMATION THROUGH AT LEAST ONE INJECTION WELL DRILLED INTO SAID FORMATION, DISPLACING SAID MICROEMULSION AND CRUDE PETROLEUM IN SAID FORMATION TOWARD AT LEAST ONE PRODUCTION WELL DRILLED INOT SAID FORMATION, AND RECOVERING CRUDE PETROLEUM THROUGH SAID PRODUCTION WELL.
Claim 2
Dependent Claim
67 words
THE PROCESS COMPRISING ADDING TO A SOLUBLE OIL A PREDETERMINED AMOUNT OF AQUEOUS DILUENT SUFFICIENT TO FORM A MICROEMULSION OF PREDETERMINED VISCOSITY, INJECTING SAID MICROEMULSION INTO A SUBTERRANEAN OIL-BEARING FORMATION THROUGH AT LEAST ONE INJECTION WELL DRILLED INTO SAID FORMATION, DISPLACING SAID MICROEMULSION AND CRUDE PETROLEUM IN SAID FORMATION TOWARD AT LEAST ONE PRODUCTION WELL DRILLED INOT SAID FORMATION, AND RECOVERING CRUDE PETROLEUM THROUGH SAID PRODUCTION WELL.
References Cited (Backward Citations)
US3149669A
Cited
US3163214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |