Patent US3126955A successfully refreshed from Google Patents.
US3126955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery process
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD FOR CARRYING OUT AN UNDERGROUND COMBUSTION IN AN OIL-BEARING FORMATION WHICH IS PENETRATED BY AT LEAST TWO WELLS FOR THE PURPSE OF PRODUCING FLUIDS THEREFROM, THE STEPS OF ESTABLISHING COMMUNICATION BETWEEN THE OIL-BEARING FORMATION AND THE GROUND SURFACE THROUGH AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL, PUMPING AN OXYGEN-CONTAINING GAS INTO SAID FORMATION THROUGH SAID INJECTION WELL, INITIATING COMBUSTION OF SAID OIL-BEARING FORMATION IN THE PRODUCTION WELL TO FORM A COMBUSTION FRONT TO HEAT THE OIL THEREIN AND DRIVE A PORTION OF THE COMPONENTS OF SAID OIL FROM SAID FORMATION, A PART OF THE COMBUSTIBLE MATERIAL ORIGINALLY IN SAID OILBEARING FORMATION BEING BURNED AS THE COMBUSTION FRONT MOVES FROM THE PRODUCTION WELL TOWARD THE INJECTION WELL, CONTINUING THE PUMPING OF OXYGEN-CONTAINING GAS INTO SAID INJECTION WELL AFTER THE COMBUSITON FRONT REACHES THE INJECTION WELL TO CAUSE THE COMBUSTION FRONT TO MOVE IN THE OPPOSITE DIRECTION UNTIL IT HAS REACHED THE PRODUCTION WELL AGAIN, AND WITHDRAWING THE VOLATILE UNBURNED COMPONENTS OF THE OIL FROM SAID FORMATION THROUGH THE PRODUCTION WELL.
Claim 2
Independent Claim
173 words
A METHOD FOR CARRYING OUT AN UNDERGROUND COMBUSTION IN AN OIL-BEARING FORMATION WHICH IS PENETRATED BY AT LEAST TWO WELLS FOR THE PURPSE OF PRODUCING FLUIDS THEREFROM, THE STEPS OF ESTABLISHING COMMUNICATION BETWEEN THE OIL-BEARING FORMATION AND THE GROUND SURFACE THROUGH AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL, PUMPING AN OXYGEN-CONTAINING GAS INTO SAID FORMATION THROUGH SAID INJECTION WELL, INITIATING COMBUSTION OF SAID OIL-BEARING FORMATION IN THE PRODUCTION WELL TO FORM A COMBUSTION FRONT TO HEAT THE OIL THEREIN AND DRIVE A PORTION OF THE COMPONENTS OF SAID OIL FROM SAID FORMATION, A PART OF THE COMBUSTIBLE MATERIAL ORIGINALLY IN SAID OILBEARING FORMATION BEING BURNED AS THE COMBUSTION FRONT MOVES FROM THE PRODUCTION WELL TOWARD THE INJECTION WELL, CONTINUING THE PUMPING OF OXYGEN-CONTAINING GAS INTO SAID INJECTION WELL AFTER THE COMBUSITON FRONT REACHES THE INJECTION WELL TO CAUSE THE COMBUSTION FRONT TO MOVE IN THE OPPOSITE DIRECTION UNTIL IT HAS REACHED THE PRODUCTION WELL AGAIN, AND WITHDRAWING THE VOLATILE UNBURNED COMPONENTS OF THE OIL FROM SAID FORMATION THROUGH THE PRODUCTION WELL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |