US3093191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery method
Assignee: Pan American Petroleum Corp
•
Filing: 1958-11-10
•
Granted: 1963-06-11
•
Expires: 1978-11-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:25
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF RECOVERING OIL FROM AN UNDERGROUND FORMATION HAVING AN INJECTION WELL AND A PRODUCTION WELL COMPRISING ESTABLISHING A HEAT WAVE IN SAID FORMATION NEAR SAID INJECTION WELL, INJECTING AT SAID INJECTION WELL A QUANTITY IOF AN OXYGEN-FREE, OIL-SOLUBLE FLUID WHICH DISSOLVES IN SAID OIL BETWEEN SAID HEAT WAVE AND SAID PRODUCTION WELL, IMMEDIATELY THEREAFTER INJECTING AN OXYGEN-FREE AQUEOUS DRIVING FLUID AT SAID INJECTION WELL WHEREBY SAID HEAT WAVE IS MOVED TOWARD SAID PRODUCTION WELL VAPORIZING SAID OIL-SOLUBLE FLUID AND PRODUCING A TWO-PHASE SYSTEM WHICH DISPLACES SAID OIL TOWARD SAID PRODUCING WELL, AND WITHDRAWING OIL FROM SAID PRODUCTION WELL.
Claim 2
Independent Claim
100 words
THE METHOD OF RECOVERING OIL FROM AN UNDERGROUND FORMATION HAVING AN INJECTION WELL AND A PRODUCTION WELL COMPRISING ESTABLISHING A HEAT WAVE IN SAID FORMATION NEAR SAID INJECTION WELL, INJECTING AT SAID INJECTION WELL A QUANTITY IOF AN OXYGEN-FREE, OIL-SOLUBLE FLUID WHICH DISSOLVES IN SAID OIL BETWEEN SAID HEAT WAVE AND SAID PRODUCTION WELL, IMMEDIATELY THEREAFTER INJECTING AN OXYGEN-FREE AQUEOUS DRIVING FLUID AT SAID INJECTION WELL WHEREBY SAID HEAT WAVE IS MOVED TOWARD SAID PRODUCTION WELL VAPORIZING SAID OIL-SOLUBLE FLUID AND PRODUCING A TWO-PHASE SYSTEM WHICH DISPLACES SAID OIL TOWARD SAID PRODUCING WELL, AND WITHDRAWING OIL FROM SAID PRODUCTION WELL.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |