US3331438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for in situ retorting of oil shale employing artificial barriers
Assignee: Mobil Oil AS
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Filing: 1964-09-30
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Granted: 1967-07-18
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Marion L Slusser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:37
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN AN IN SITU RETORTING METHOD FOR RECOVERING HYDROCARBONS FROM THE SUBTERRANEAN DEPOSIT THROUGH WELL MEANS IN FLUID COMMUNICATION AT SPACED LOCATIONS WITH OPENINGS IN AND BEYOND THAT PORTION OF THE DEPOSIT TO BE RETORTED, THE IMPROVEMENT COMPRISING THE STEPS OF: (A) INJECTING FROM THE EARTH''S SURFACE VIA THE WELL MEANS INTO OPENINGS IN THE DEPOSIT A FLUID CONTAINING HYDRAULIC CEMENT AND WATER IN AMOUNTS SUFFICIENT TO SUBSEQUENTLY PRODUCE A MATERIAL SEALING OPENINGS CONTAINING THE FLUID TO FLUID FLOWS, (B) INJECTING WATER FROM THE EARTH''S SURFACE VIA THE WELL MEANS INTO THE OPENINGS IN THAT PORTION OF THE DEPOSIT TO BE RETORTED TO EXCLUDE THE FIRST-MENTIONED FLUID THEREFROM, AND (C) CARRYING OUT IN SITU RETORTING WITH FLUID FLOWS LIMITED TO THE PORTION OF THE DEPOSIT TO BE RETORTED AND RECOVERING THE RESULTING HYDROCARBONS FROM THESE FLUID FLOWS.
Claim 2
Dependent Claim
137 words
IN AN IN SITU RETORTING METHOD FOR RECOVERING HYDROCARBONS FROM THE SUBTERRANEAN DEPOSIT THROUGH WELL MEANS IN FLUID COMMUNICATION AT SPACED LOCATIONS WITH OPENINGS IN AND BEYOND THAT PORTION OF THE DEPOSIT TO BE RETORTED, THE IMPROVEMENT COMPRISING THE STEPS OF: (A) INJECTING FROM THE EARTH''S SURFACE VIA THE WELL MEANS INTO OPENINGS IN THE DEPOSIT A FLUID CONTAINING HYDRAULIC CEMENT AND WATER IN AMOUNTS SUFFICIENT TO SUBSEQUENTLY PRODUCE A MATERIAL SEALING OPENINGS CONTAINING THE FLUID TO FLUID FLOWS, (B) INJECTING WATER FROM THE EARTH''S SURFACE VIA THE WELL MEANS INTO THE OPENINGS IN THAT PORTION OF THE DEPOSIT TO BE RETORTED TO EXCLUDE THE FIRST-MENTIONED FLUID THEREFROM, AND (C) CARRYING OUT IN SITU RETORTING WITH FLUID FLOWS LIMITED TO THE PORTION OF THE DEPOSIT TO BE RETORTED AND RECOVERING THE RESULTING HYDROCARBONS FROM THESE FLUID FLOWS.
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |