Patent US2875830A successfully refreshed from Google Patents.
US2875830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovery of oil by injection of hydrocarbon solution of carbon dioxide into oil structure
Assignee: Oil Recovery Corp
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Filing: 1954-02-04
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Granted: 1959-03-03
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Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 James W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN THE RECOVERY OF OIL FROM AN UNDERGROUND OIL STRUCTURE IN AN OIL FIELD HAVING AT LEAST ONE INPUT WELL AND AT LEAST ONE OUTPUT WELL THAT IMPROVEMENT WHICH CONSISTS ESSENTIALLY IN PASSING UNDER PRESSURE THROUGH SAID OIL STRUCTURE FROM SAID INPUT WELL TO SAID OUT PUT WELL LIGHT HYDROCARBON SOLUTION OF CARBON DIOXIDE, THE HYDROCARBON HAVING A BOILING POINT BELOW 350* C., THE AMOUNT OF CARBON DIOXIDE GIVING NOT LESS THAN ABOUT 20% TO NOT MORE THAN 100% CARBONATION OF THE LIGHT HYDROCARBON, AND NOT EXCEEDING THE AMOUNT OF CARBON DIOXIDE THAT WILL REMAIN IN SOLUTION AT PREVAILING RESERVOIR CONDITIONS, THE SOLUTION BEING LIQUID UNDER THE PREVAILING CONDITIONS OF THE UNDERGROUND STRUCTURE, WHEREBY OIL IS RECOVERED FROM SAID OIL STRUCTURE.
Claim 2
Dependent Claim
121 words
IN THE RECOVERY OF OIL FROM AN UNDERGROUND OIL STRUCTURE IN AN OIL FIELD HAVING AT LEAST ONE INPUT WELL AND AT LEAST ONE OUTPUT WELL THAT IMPROVEMENT WHICH CONSISTS ESSENTIALLY IN PASSING UNDER PRESSURE THROUGH SAID OIL STRUCTURE FROM SAID INPUT WELL TO SAID OUT PUT WELL LIGHT HYDROCARBON SOLUTION OF CARBON DIOXIDE, THE HYDROCARBON HAVING A BOILING POINT BELOW 350* C., THE AMOUNT OF CARBON DIOXIDE GIVING NOT LESS THAN ABOUT 20% TO NOT MORE THAN 100% CARBONATION OF THE LIGHT HYDROCARBON, AND NOT EXCEEDING THE AMOUNT OF CARBON DIOXIDE THAT WILL REMAIN IN SOLUTION AT PREVAILING RESERVOIR CONDITIONS, THE SOLUTION BEING LIQUID UNDER THE PREVAILING CONDITIONS OF THE UNDERGROUND STRUCTURE, WHEREBY OIL IS RECOVERED FROM SAID OIL STRUCTURE.
References Cited (Backward Citations)
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Cited
US1843002A
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US1826371A
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US2412765A
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US2582148A
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US2669306A
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |