Patent DE3218314C2 successfully refreshed from Google Patents.
US3261399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process utilizing the combination of miscible and thickened floods in petroleum recovery
Assignee: Marathon Oil Co
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Filing: 1963-06-19
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Granted: 1966-07-19
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Claude P Coppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE PROCESS FOR RECOVERING FLUID HYDROCARBONS FROM SUBTERRANEAN FORMATIONS HAVING DRILLED THEREIN AT LEAST ONE EACH OF A PRODUCTION WELL AND AN INJECTION WELL CONSISTING ESSENTIALLY OF (A) INJECTING INTO THE SUBTERRANEAN FORMATION AT LEAST ONE SLUG OF AN EMULSION, (B) INJECTING INTO SAID FORMATION AT LEAST ONE SLUG OF A THICKENED FLOOD MATERIAL DIFFERING FROM SAID EMULSION IN CHARACTER, AT LEAST A PORTION OF SAID MATERIAL BEING INCREMENTALLY DIMINISHED IN VISCOSITY FROM ABOUT THAT OF THE EMULSION AT THE LEADING EDGE OF THE MATERIAL TO ABOUT THAT OF A DRIVE MATERIAL AT THE INTERFACE BETWEEN THE THICKENED FLOOD MATERIAL AND A DRIVE FLUID, (C) INJECTING A DRIVE FLUID INTO THE FORMATION TO DISPLACE HYDROCARBONS TOWARD SAID PRODUCTION WELL, AND (D) RECOVERING OIL FROM SAID FORMATION.
Claim 2
Dependent Claim
126 words
THE PROCESS FOR RECOVERING FLUID HYDROCARBONS FROM SUBTERRANEAN FORMATIONS HAVING DRILLED THEREIN AT LEAST ONE EACH OF A PRODUCTION WELL AND AN INJECTION WELL CONSISTING ESSENTIALLY OF (A) INJECTING INTO THE SUBTERRANEAN FORMATION AT LEAST ONE SLUG OF AN EMULSION, (B) INJECTING INTO SAID FORMATION AT LEAST ONE SLUG OF A THICKENED FLOOD MATERIAL DIFFERING FROM SAID EMULSION IN CHARACTER, AT LEAST A PORTION OF SAID MATERIAL BEING INCREMENTALLY DIMINISHED IN VISCOSITY FROM ABOUT THAT OF THE EMULSION AT THE LEADING EDGE OF THE MATERIAL TO ABOUT THAT OF A DRIVE MATERIAL AT THE INTERFACE BETWEEN THE THICKENED FLOOD MATERIAL AND A DRIVE FLUID, (C) INJECTING A DRIVE FLUID INTO THE FORMATION TO DISPLACE HYDROCARBONS TOWARD SAID PRODUCTION WELL, AND (D) RECOVERING OIL FROM SAID FORMATION.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |