Patent US2813583A successfully refreshed from Google Patents.
US2813583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of petroleum from sands and shale
Assignee: Phillips Petroleum Co
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Filing: 1954-12-06
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Granted: 1957-11-19
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 John W Marx
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:51
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B41/00; E21B41/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR RECOVERING HYDROCARBON FROM A HYDROCARBON-CONTAINING STRATUM PENETRATED BY AT LEAST TWO SPACED-APART BOREHOLES COMPRISING HYDRAULICALLY FRACTURING AN AREA IN SAID STRATUM SURROUNDING SAID BOREHOLES SO AS TO FORM ARTIFICAL CRACKS OR CREVICES IN SAID STRATUM CONNECTING SAID BOREHOLES; INTRODUCING A PROPPING AGENT INTO SAID CRACK OR CREVICES TO HOLD SAME OPEN; THEREAFTER INJECTING HOT FLUID INTO SAID FORMATION THROUGH ONE OF SAID BOREHOLES SO AS TO HEAT UP THE HYDROCARBON-CONTAINING STRATUM TO A TEMPERATURE OF AT LEAST 400*F. AND DRIVE
Claim 2
Dependent Claim
83 words
A PROCESS FOR RECOVERING HYDROCARBON FROM A HYDROCARBON-CONTAINING STRATUM PENETRATED BY AT LEAST TWO SPACED-APART BOREHOLES COMPRISING HYDRAULICALLY FRACTURING AN AREA IN SAID STRATUM SURROUNDING SAID BOREHOLES SO AS TO FORM ARTIFICAL CRACKS OR CREVICES IN SAID STRATUM CONNECTING SAID BOREHOLES; INTRODUCING A PROPPING AGENT INTO SAID CRACK OR CREVICES TO HOLD SAME OPEN; THEREAFTER INJECTING HOT FLUID INTO SAID FORMATION THROUGH ONE OF SAID BOREHOLES SO AS TO HEAT UP THE HYDROCARBON-CONTAINING STRATUM TO A TEMPERATURE OF AT LEAST 400*F. AND DRIVE
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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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |