US2931437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for initiating subterranean combustion
Assignee: Phillips Petroleum Co
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Filing: 1956-02-23
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Granted: 1960-04-05
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 David R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:19
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A METHOD FOR RECOVERING HYDROCARBONS FROM A GEOLOGICAL FROMATION PENETRATED BY AT LEAST ONE INPUT WELL AND AT LEAST ONE ADJACENT OUTPUT WELL LEADING FROM THE SURFACE THERETO WHICH COMPRISES BURING SAID HYDROCARBONS SO AS TO ESTABLISH A FIRE FRONT, AND MAINTAINING SAID BURING WITH A COMBUSTION SUPPORTING GAS WHEREBY FLUID HYDROCARBONS ARE DRIVEN TO SAID OUTPUT WELL AND RECOVERED THEREFROM, THE IMPROVEMENT COMPRISING INTRODUCING IN SAID INPUT WELL A BODY OF SOLID FUEL, THE COMBUSTION OF WHICH IS SELF-SUSTAINING, IN SUBSTANTIALLY THE LOCALE OF SAID FORMATION, IGNITING SAID FUEL, AND DI-
Claim 2
Dependent Claim
93 words
IN A METHOD FOR RECOVERING HYDROCARBONS FROM A GEOLOGICAL FROMATION PENETRATED BY AT LEAST ONE INPUT WELL AND AT LEAST ONE ADJACENT OUTPUT WELL LEADING FROM THE SURFACE THERETO WHICH COMPRISES BURING SAID HYDROCARBONS SO AS TO ESTABLISH A FIRE FRONT, AND MAINTAINING SAID BURING WITH A COMBUSTION SUPPORTING GAS WHEREBY FLUID HYDROCARBONS ARE DRIVEN TO SAID OUTPUT WELL AND RECOVERED THEREFROM, THE IMPROVEMENT COMPRISING INTRODUCING IN SAID INPUT WELL A BODY OF SOLID FUEL, THE COMBUSTION OF WHICH IS SELF-SUSTAINING, IN SUBSTANTIALLY THE LOCALE OF SAID FORMATION, IGNITING SAID FUEL, AND DI-
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |