US2823752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement of apparatus for oil recovery
Assignee: Worthington Corp
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Filing: 1955-08-30
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Granted: 1958-02-18
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Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Walter Hellmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A METHOD OF INJECTING A GAS-STEAM MIXTURE INTO A DEPLETED OIL RESERVOIR TO FORCE OIL THEREFROM COMPRISING PROVIDING A SOURCE OF POWER FOR FLOWING FUEL, COMPRESSED AIR TO SUPPORT COMBUSTION, AND LIQUID TO BE CONVERTED INTO STEAM INTO A COMBUSTION ZONE, FIRING THE FUEL IN THE COMBUSTION ZONE TO PRODUCE A GAS-STEAM MIXTURE THEREIN, FLOWING THE GAS-STEAM MIXTURE INTO AN EXPANSION ZONE TO PROVIDE ENERGY FOR AIDING IN THE FLOWING OF SAID FUEL, AIR, AND LIQUID INTO SAID COMBUSTION ZONE, AND THEREAFTER FLOWING THE EXPANDED GAS-STEAM MIXTURE FROM SAID EXPANSION ZONE INTO SAID DEPLETED OIL RESERVOIR.
References Cited (Backward Citations)
US2734578A
Cited
US2617484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |