US2669307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum production process
Assignee: SOGC Inc
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Filing: 1950-06-13
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Granted: 1954-02-16
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Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 Ramon A Mulholland
- 👤 Bernard S Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:33
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE RECOVERY OF OIL FROM PARTIALLY DEPLETED OIL-BEARING FORMATIONS BY INTRODUCING A LIQUDFIED NORMALLY GASEOUS LOW MOLECULAR WEIGHT HYDROCARBON TO THE FORMATION THROUGH AN INPUT WELL WHILE MAINTAINING BACK PRESSURE ON AN OUTLET WELL, FORCING THE LIQUEFIED HYDROCARBON THROUGH THE FORMATION BY WATER DRIVE AND RECOVERING OIL AND GAS FROM AN OUTLET WELL, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE LINEAR VELOCITY OF THE COMBINED DRIVE THROUGH THE FORMATION AT A RATE BELOW ABOUT 2 FEET PER DAY.
Claim 2
Dependent Claim
78 words
IN THE RECOVERY OF OIL FROM PARTIALLY DEPLETED OIL-BEARING FORMATIONS BY INTRODUCING A LIQUDFIED NORMALLY GASEOUS LOW MOLECULAR WEIGHT HYDROCARBON TO THE FORMATION THROUGH AN INPUT WELL WHILE MAINTAINING BACK PRESSURE ON AN OUTLET WELL, FORCING THE LIQUEFIED HYDROCARBON THROUGH THE FORMATION BY WATER DRIVE AND RECOVERING OIL AND GAS FROM AN OUTLET WELL, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE LINEAR VELOCITY OF THE COMBINED DRIVE THROUGH THE FORMATION AT A RATE BELOW ABOUT 2 FEET PER DAY.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |