Patent US3135427A successfully refreshed from Google Patents.
Patent US3270813A successfully refreshed from Google Patents.
US3270813A
Expired / Lapsed
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Ignition and combustion of carbonaceous strata
Assignee: Phillips Petroleum Co
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Filing: 1964-06-15
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Granted: 1966-09-06
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Gilchrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR IGNITING A CARBONACEOUS STRATUM PENETRATED BY A WELL WHICH COMPRISES THE STEPS OF: (A) FRACTURING SAID STRATUM TO EXTEND A FRACTURE RADIALLY OUTWARDLY FROM SAID WELL USING A NON-AQUEOUS FRACTURING FLUID; (B) INJECTING INTO SAID FRACTURE A MIXTURE OF A HIGH TEMPERATURE RESISTANT PROPPING AGENT IN PARTICULATE FORM, "THERMIT" PELLETS, AND PELLETS OF A STARTER MATERIAL REACTIVE WITH WATER, USING A NON-AQUEOUS INJECTION FLUID; (C) FOLLOWING STEP (B) INJECTING WATER INTO SAID FRACTURES SO AS TO ENERGIZE SAID STARTER MATERIAL WHICH THEN HEATS AND IGNITES THE "THERMIT" PELLETS; AND
Claim 2
Dependent Claim
92 words
A PROCESS FOR IGNITING A CARBONACEOUS STRATUM PENETRATED BY A WELL WHICH COMPRISES THE STEPS OF: (A) FRACTURING SAID STRATUM TO EXTEND A FRACTURE RADIALLY OUTWARDLY FROM SAID WELL USING A NON-AQUEOUS FRACTURING FLUID; (B) INJECTING INTO SAID FRACTURE A MIXTURE OF A HIGH TEMPERATURE RESISTANT PROPPING AGENT IN PARTICULATE FORM, "THERMIT" PELLETS, AND PELLETS OF A STARTER MATERIAL REACTIVE WITH WATER, USING A NON-AQUEOUS INJECTION FLUID; (C) FOLLOWING STEP (B) INJECTING WATER INTO SAID FRACTURES SO AS TO ENERGIZE SAID STARTER MATERIAL WHICH THEN HEATS AND IGNITES THE "THERMIT" PELLETS; AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |