Patent US4519706A successfully refreshed from Google Patents.
Patent US3349846A successfully refreshed from Google Patents.
US3349846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of heavy crude oil by heating
Assignee: Phillips Petroleum Co
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Filing: 1964-07-30
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Granted: 1967-10-31
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Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Trantham
- 👤 Henry W Hennigan
- 👤 Michael J Fetkovich
- 👤 Mehmet R Tek
- 👤 John R Bruns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:57
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR PRODUCING OIL FROM A VISCOUS OIL-BEARING STRATUM WHEREIN THE MOBILITY OF THE OIL IS LOW AND SAID STRATUM OVERLIES AN ADJACENT AQUIFER, WHICH COMPRISES THE STEPS OF: (1) DRILLING A WELL THRU SAID STRATUM INTO SAID AQUIFER; (2) FORMING A COMBUSTIBLE MIXTURE OF AIR AND FUEL ONLY IN SAID AQUIFER AROUND SAID WELL; (3) BURNING SAID MIXTURE ONLY IN SAID AQUIFER SO AS TO HEAT THE OIL IN THE ADJACENT OIL-BEARING STRATUM AND REDUCE THE VISCOSITY THEREOF EFFECTING FLOW OF THE HEATED OIL INTO SAID WELL; AND (4) RECOVERING THE OIL FROM SAID WELL.
Claim 2
Dependent Claim
97 words
A PROCESS FOR PRODUCING OIL FROM A VISCOUS OIL-BEARING STRATUM WHEREIN THE MOBILITY OF THE OIL IS LOW AND SAID STRATUM OVERLIES AN ADJACENT AQUIFER, WHICH COMPRISES THE STEPS OF: (1) DRILLING A WELL THRU SAID STRATUM INTO SAID AQUIFER; (2) FORMING A COMBUSTIBLE MIXTURE OF AIR AND FUEL ONLY IN SAID AQUIFER AROUND SAID WELL; (3) BURNING SAID MIXTURE ONLY IN SAID AQUIFER SO AS TO HEAT THE OIL IN THE ADJACENT OIL-BEARING STRATUM AND REDUCE THE VISCOSITY THEREOF EFFECTING FLOW OF THE HEATED OIL INTO SAID WELL; AND (4) RECOVERING THE OIL FROM SAID WELL.
References Cited (Backward Citations)
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Cited
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US3170515A
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US3221811A
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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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |