US3208519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined in situ combustion-water injection oil recovery process
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1961-07-17
•
Granted: 1965-09-28
•
Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas V Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:10
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A FORWARD COMBUSTION METHOD FOR THE RECOVERY OF OIL FROM A SUBTERRANEAN RESERVOIR THE IMPROVEMENT WHICH COMPRISES INTRODUCING GAS CONTAINING AT LEAST 80% FREE OXYGEN INTO SAID RESERVOIR THROUGH AN INPUT WELL UNDER CONDITIONS TO COMBUST A PORTION OF SAID OIL WITH SAID OXYGEN AND TO CAUSE OIL TO FLOW TOWARD AN OUTPUT WELL SPACED FROM SAID INPUT WELL, SIMULTANEOUSLY INJECTING WATER INTO SAID RESERVOIR THROUGH SAID INPUT WELL, THE QUANTITY OF SAID WATER BEING AT LEAST ABOUT 4 POUNDS PER POUND OF FREE OXYGEN BUT INSUFFICIENT TO EXTINGUISH THE COMBUSTION.
Claim 2
Dependent Claim
92 words
IN A FORWARD COMBUSTION METHOD FOR THE RECOVERY OF OIL FROM A SUBTERRANEAN RESERVOIR THE IMPROVEMENT WHICH COMPRISES INTRODUCING GAS CONTAINING AT LEAST 80% FREE OXYGEN INTO SAID RESERVOIR THROUGH AN INPUT WELL UNDER CONDITIONS TO COMBUST A PORTION OF SAID OIL WITH SAID OXYGEN AND TO CAUSE OIL TO FLOW TOWARD AN OUTPUT WELL SPACED FROM SAID INPUT WELL, SIMULTANEOUSLY INJECTING WATER INTO SAID RESERVOIR THROUGH SAID INPUT WELL, THE QUANTITY OF SAID WATER BEING AT LEAST ABOUT 4 POUNDS PER POUND OF FREE OXYGEN BUT INSUFFICIENT TO EXTINGUISH THE COMBUSTION.
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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) | 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 |