Patent US3208515A successfully refreshed from Google Patents.
US3208515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering oil from underground reservoirs
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1959-01-21
•
Granted: 1965-09-28
•
Expires: 1979-01-21
Abstract
No abstract record available.
Inventors
- 👤 Victor G Meadors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/588; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936; Y10S507/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR DISPLACING OIL FROM A SUBTERRANEAN OIL RESERVOIR WHICH COMPRIESES INJECTING AS A FIRST DRIVING FLUID AN EMULSION OF WATER AND OIL IN WHICH THE CONTINUOUS PHASE HAS BEEN THICKENED WITHIN A RESERVOIR THROUGH AN INPUT WELL AND IN A QUANTITY SUFFICIENT TO DISPLACE OIL FROM AT LEAST A PORTION OF THE RESERVOIR AND RECOVERING DISPLACED OIL FROM AN OUTPUT WELL SPACED FROM THE INPUT WELL.
Claim 2
Dependent Claim
68 words
A PROCESS FOR DISPLACING OIL FROM A SUBTERRANEAN OIL RESERVOIR WHICH COMPRIESES INJECTING AS A FIRST DRIVING FLUID AN EMULSION OF WATER AND OIL IN WHICH THE CONTINUOUS PHASE HAS BEEN THICKENED WITHIN A RESERVOIR THROUGH AN INPUT WELL AND IN A QUANTITY SUFFICIENT TO DISPLACE OIL FROM AT LEAST A PORTION OF THE RESERVOIR AND RECOVERING DISPLACED OIL FROM AN OUTPUT WELL SPACED FROM THE INPUT WELL.
References Cited (Backward Citations)
US2341500A
Cited
US2742426A
Cited
US2800962A
Cited
US2842492A
Cited
US2771138A
Cited
US2793189A
Cited
US2827964A
Cited
US2988142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |