US3147804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heating underground formations and recovery of oil therefrom
Assignee: Gulf Research and Development Co
•
Filing: 1960-12-27
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Granted: 1964-09-08
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Malcolm R J Wyllie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF HEATING AN OIL-BEARING FORMATION, PENETRATED BY A FUEL SUPPLY WELL AND AN EXHAUST WELL SPACED THEREFROM, HAVING A SUBSTANTIALLY IMPERMEABLE STRATUM OF ARGILLACEOUS ORIGIN ADJACENT THERETO, COMPRISING FORMING A FRACTURE EXTENDING IN SAID STRATUM FROM THE FUEL SUPPLY WELL TO THE EXHAUST WELL, DEPOSITING A PROPPING AGENT IN THE FRACTURE TO HOLD THE FRACTURE OPEN, INJECTING A FLUID FUEL AND OXYGEN-CONTAINING GAS MIXTURE INTO THE FRACTURE ADJACENT THE FUEL SUPPLY WELL, IGNITING THE FUEL WITHIN THE FRACTURE ADJACENT THE FUEL SUPPLY WELL, MAIN-
Claim 2
Independent Claim
86 words
A METHOD OF HEATING AN OIL-BEARING FORMATION, PENETRATED BY A FUEL SUPPLY WELL AND AN EXHAUST WELL SPACED THEREFROM, HAVING A SUBSTANTIALLY IMPERMEABLE STRATUM OF ARGILLACEOUS ORIGIN ADJACENT THERETO, COMPRISING FORMING A FRACTURE EXTENDING IN SAID STRATUM FROM THE FUEL SUPPLY WELL TO THE EXHAUST WELL, DEPOSITING A PROPPING AGENT IN THE FRACTURE TO HOLD THE FRACTURE OPEN, INJECTING A FLUID FUEL AND OXYGEN-CONTAINING GAS MIXTURE INTO THE FRACTURE ADJACENT THE FUEL SUPPLY WELL, IGNITING THE FUEL WITHIN THE FRACTURE ADJACENT THE FUEL SUPPLY WELL, MAIN-
References Cited (Backward Citations)
US2584605A
Cited
US2871942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |