US2669306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum production process
Assignee: SOGC Inc
•
Filing: 1948-12-17
•
Granted: 1954-02-16
•
Expires: 1968-12-17
Abstract
No abstract record available.
Inventors
- 👤 John W Teter
- 👤 Bernard S Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN THE RECOVERY OF OIL FROM PARTIALLY DEPLETED OIL-BEARING FORMATIONS, THE IMPROVEMENT WHICH CONSISTS OF INTRODUCING A LIQUIFIED NORMALLY GASEOUS LOW MOLECULAR WEIGHT HYDROCARBON TO THE FORMATION THROUGH AN INPUT WELL WHILE HOLDING BACK PRESSURE ON AN OUTLET WELL, FORCING A LAYER OF SAID LIQUEFIED HYDROCARBON THROUGH THE FORMATION BY MEANS OF WATER INJECTION, AND RECOVERING GAS AND OIL FROM THE OUTLET WELL.
Claim 2
Dependent Claim
63 words
IN THE RECOVERY OF OIL FROM PARTIALLY DEPLETED OIL-BEARING FORMATIONS, THE IMPROVEMENT WHICH CONSISTS OF INTRODUCING A LIQUIFIED NORMALLY GASEOUS LOW MOLECULAR WEIGHT HYDROCARBON TO THE FORMATION THROUGH AN INPUT WELL WHILE HOLDING BACK PRESSURE ON AN OUTLET WELL, FORCING A LAYER OF SAID LIQUEFIED HYDROCARBON THROUGH THE FORMATION BY MEANS OF WATER INJECTION, AND RECOVERING GAS AND OIL FROM THE OUTLET WELL.
References Cited (Backward Citations)
US1787973A
Cited
US1978655A
Cited
US1823439A
Cited
US2115378A
Cited
US2412765A
Cited
US2341500A
Cited
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 |