US3209822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of petroleum by direct in-situ combustion
Assignee: ExxonMobil Oil Corp
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Filing: 1963-05-27
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Granted: 1965-10-05
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 James E Marberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:08
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A PROCEDURE FOR RECOVERING HYDROCARBONS FROM A SUBTERRANEAN FORMATION CONTAINING HYDROCARBON MATERIAL WHEREIN A COMBUSTION FRONT IS INITIATED WITHIN SAID FORMATION AT AN INPUT WELL, OXIDIZING GAS IS PASSED INTO SAID FORMATION AT AN INPUT WELL, OXIDIZING GAS IS PASSED INTO SAID FORMATION THROUGH SAID INPUT WELL, AND SAID COMBUSTION FRONT IS ADVANCED THROUGH SAID FORMATION FROM SAID INPUT WELL TO AN OUTPUT WELL, THE PROCESS COMPRISING: (A) PASSING THROUGH SAID OUTPUT WELL INTO SAID FORMATION PRIOR TO INITIATION OF SAID COMBUSTION FRONT AN OXIDIZING GAS, AND (B) CONTINUING PASSAGE OF SAID OXIDIZING GAS THROUGH SAID OUTPUT WELL INTO SAID INPUT WELL UNTIL THE TEMPERATURE OF SAID FORMATION IN THE VICINITY OF SAID OUTPUT WELL HAS BEEN INCREASED BY AUTO-OXIDATION OF SAID HYDROCARBON MATERIAL INSUFFICIENTLY HIGH TO CAUSE COKING OF SAID HYDROCARBON MATERIAL BUT SUFFICIENTLY HIGH TO REDUCE THE BLOCKING EFFECT ON FLOW OF OXIDIZING GAS OF CONDENSATION OF VAPORIZED HYDROCARBONS AND OF INCREASE IN VISCOSITY OF LIQUID HYDROCARBONS DISPLACED FROM SAID FORMATION BY SAID COMBUSTION FRONT.
Claim 2
Dependent Claim
168 words
IN A PROCEDURE FOR RECOVERING HYDROCARBONS FROM A SUBTERRANEAN FORMATION CONTAINING HYDROCARBON MATERIAL WHEREIN A COMBUSTION FRONT IS INITIATED WITHIN SAID FORMATION AT AN INPUT WELL, OXIDIZING GAS IS PASSED INTO SAID FORMATION AT AN INPUT WELL, OXIDIZING GAS IS PASSED INTO SAID FORMATION THROUGH SAID INPUT WELL, AND SAID COMBUSTION FRONT IS ADVANCED THROUGH SAID FORMATION FROM SAID INPUT WELL TO AN OUTPUT WELL, THE PROCESS COMPRISING: (A) PASSING THROUGH SAID OUTPUT WELL INTO SAID FORMATION PRIOR TO INITIATION OF SAID COMBUSTION FRONT AN OXIDIZING GAS, AND (B) CONTINUING PASSAGE OF SAID OXIDIZING GAS THROUGH SAID OUTPUT WELL INTO SAID INPUT WELL UNTIL THE TEMPERATURE OF SAID FORMATION IN THE VICINITY OF SAID OUTPUT WELL HAS BEEN INCREASED BY AUTO-OXIDATION OF SAID HYDROCARBON MATERIAL INSUFFICIENTLY HIGH TO CAUSE COKING OF SAID HYDROCARBON MATERIAL BUT SUFFICIENTLY HIGH TO REDUCE THE BLOCKING EFFECT ON FLOW OF OXIDIZING GAS OF CONDENSATION OF VAPORIZED HYDROCARBONS AND OF INCREASE IN VISCOSITY OF LIQUID HYDROCARBONS DISPLACED FROM SAID FORMATION BY SAID COMBUSTION FRONT.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |