Patent US3361644A successfully refreshed from Google Patents.
US3361644A
Expired / Lapsed
US
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Shale retorting process
Assignee: Union Oil Company of California
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Filing: 1965-05-13
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Granted: 1968-01-02
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Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Roland F Deering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:26
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PROCESS FOR RETORTING MINERAL CARBONATE-CONTAINING OIL SHALE WHICH COMPRISES: PASSING SAID SHALE UPWARDLY IN THE FORM OF A DENSE BED FROM A SOLIDS FEEDER ZONE SUCCESSIVELY THROUGH A FLUID-SOLID DISENGAGING ZONE, A SOLIDS PREHEATING AND PRODUCT COOLING ZONE, AND AN EDUCTION ZONE; PASSING AN ESSENTIALLY OXYGEN-FREE HOT EDUCTION GAS CONSISTING ESSENTIALLY OF SHALE GAS DOWNWARDLY THROUGH SAID EDUCTION ZONE AT A TEMPERATURE SUFFICIENT TO EDUCT SHALE OIL AND SHALE GAS FROM SAID SHALE, SAID SHALE IN SAID EDUCTION ZONE BEING MAINTAINED AT A TEMPERATURE BELOW THAT AT WHICFH SSAID MINERAL CARBONATES UNDERGO SUBSTANTIAL DECOMPOSITION; COOLING AND PARTIALLY CONDENSING SAID OIL AND SAID GAS IN SAID SOLIDS PREHEATING AND PRODUCT CONDENSING ZONE; REMOVING A GAS PHASE AND LIQUID OIL PHASE FROM SAID DISENGAGING ZONE; SEPARATING SAID LIQUID OIL PHASE FROM SAAID GAS PHASE; INDIRECTLY HEATING A PORTION OF SAID GAS PHASE TO EDUCTION TEMPERATURES; RCYCLING SAID HEATED PORTION OF SAID GAS PHASE TO SAID EDUCTION ZONE AS SAID HOT EDUCTION GAS TO CONTACT SAID SHALE THEREIN COUNTERCURRENTLY; AND
Claim 2
Dependent Claim
168 words
A PROCESS FOR RETORTING MINERAL CARBONATE-CONTAINING OIL SHALE WHICH COMPRISES: PASSING SAID SHALE UPWARDLY IN THE FORM OF A DENSE BED FROM A SOLIDS FEEDER ZONE SUCCESSIVELY THROUGH A FLUID-SOLID DISENGAGING ZONE, A SOLIDS PREHEATING AND PRODUCT COOLING ZONE, AND AN EDUCTION ZONE; PASSING AN ESSENTIALLY OXYGEN-FREE HOT EDUCTION GAS CONSISTING ESSENTIALLY OF SHALE GAS DOWNWARDLY THROUGH SAID EDUCTION ZONE AT A TEMPERATURE SUFFICIENT TO EDUCT SHALE OIL AND SHALE GAS FROM SAID SHALE, SAID SHALE IN SAID EDUCTION ZONE BEING MAINTAINED AT A TEMPERATURE BELOW THAT AT WHICFH SSAID MINERAL CARBONATES UNDERGO SUBSTANTIAL DECOMPOSITION; COOLING AND PARTIALLY CONDENSING SAID OIL AND SAID GAS IN SAID SOLIDS PREHEATING AND PRODUCT CONDENSING ZONE; REMOVING A GAS PHASE AND LIQUID OIL PHASE FROM SAID DISENGAGING ZONE; SEPARATING SAID LIQUID OIL PHASE FROM SAAID GAS PHASE; INDIRECTLY HEATING A PORTION OF SAID GAS PHASE TO EDUCTION TEMPERATURES; RCYCLING SAID HEATED PORTION OF SAID GAS PHASE TO SAID EDUCTION ZONE AS SAID HOT EDUCTION GAS TO CONTACT SAID SHALE THEREIN COUNTERCURRENTLY; AND
References Cited (Backward Citations)
GB722419A
Cited
US2966446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |