US3004597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Initiating in situ combustion in a carbonaceous stratum
Assignee: Phillips Petroleum Co
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Filing: 1958-05-19
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Granted: 1961-10-17
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Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 John W Marx
- 👤 Joseph C Trantham
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR IGNITING A COMBUSTIBLE GAS-PERMEABLE CARBONACEOUS STRATUM COMPRISING SUSPENDING A BONDED UNITARY MASS SOF SOLID FUSEL COMPRISING CHARCOAL IN AN IGNITION BOREHOLE ADJACENT SAID STRATUM, HEATING AND IGNITING A LOWER END SECTION OF SAID MASS OF FUEL, PASSING O2-CONTAINING COMBUSTION-SUPPORTING GAS INTO AN OFFSET BOREHOLE AND THUR SAID STRATUM INTO SAID IGNITION BOREHOLE TO BURN
Claim 2
Dependent Claim
57 words
A PROCESS FOR IGNITING A COMBUSTIBLE GAS-PERMEABLE CARBONACEOUS STRATUM COMPRISING SUSPENDING A BONDED UNITARY MASS SOF SOLID FUSEL COMPRISING CHARCOAL IN AN IGNITION BOREHOLE ADJACENT SAID STRATUM, HEATING AND IGNITING A LOWER END SECTION OF SAID MASS OF FUEL, PASSING O2-CONTAINING COMBUSTION-SUPPORTING GAS INTO AN OFFSET BOREHOLE AND THUR SAID STRATUM INTO SAID IGNITION BOREHOLE TO BURN
References Cited (Backward Citations)
US2670047A
Cited
US2901043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |