US3080918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum recovery from subsurface oil bearing formation
Assignee: Richfield Oil Corp
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Filing: 1957-08-29
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Granted: 1963-03-12
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Expires: 1977-08-29
Abstract
No abstract record available.
Inventors
- 👤 Manley L Natland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:28
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2403; G; G21; G21D; G21D9/00; Y; Y02; Y02E; Y02E30/00; Y10; Y10S; Y10S376/00; Y10S376/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A METHOD OF HEATING AND RENDERING LESS VISCOUS THE PETROLEUM CONTAINED IN A SUBFACE OIL BEARING FORMATION, THE STEPS WHICH COMPRISE PROVIDING IMPUT AND OUTPUT BORE HOLES TO SAID FORMATION, POSITIONING IN SAID INPUT BORES HOLES MEANS FOR EFFECTING A CONTROLLED SELF-SUSTAINED THERMAL NEUTRONIC REACTION, SAID MEANS HAVING SPACED APART FISSIONABLE ELEMENTS PASSING CRUDE PETROLEUM OIL BETWEEN SAID FISSIONABLE ELEMENTS WHEREBY SAID OIL IS HEATED WHILE SERVING AS A NEUTRON MODERATOR, PASSING SAID HEATED OIL INTO THE SAID FORMATION THUS RENDERING THE PETROLEUM CONTAINED IN SAID FORMATION LESS VISCOUS AND RECOVERING OIL FROM THE FORMATION BY MEANS OF SAID OUTPUT BORE HOLE.
Claim 2
Dependent Claim
103 words
IN A METHOD OF HEATING AND RENDERING LESS VISCOUS THE PETROLEUM CONTAINED IN A SUBFACE OIL BEARING FORMATION, THE STEPS WHICH COMPRISE PROVIDING IMPUT AND OUTPUT BORE HOLES TO SAID FORMATION, POSITIONING IN SAID INPUT BORES HOLES MEANS FOR EFFECTING A CONTROLLED SELF-SUSTAINED THERMAL NEUTRONIC REACTION, SAID MEANS HAVING SPACED APART FISSIONABLE ELEMENTS PASSING CRUDE PETROLEUM OIL BETWEEN SAID FISSIONABLE ELEMENTS WHEREBY SAID OIL IS HEATED WHILE SERVING AS A NEUTRON MODERATOR, PASSING SAID HEATED OIL INTO THE SAID FORMATION THUS RENDERING THE PETROLEUM CONTAINED IN SAID FORMATION LESS VISCOUS AND RECOVERING OIL FROM THE FORMATION BY MEANS OF SAID OUTPUT BORE HOLE.
References Cited (Backward Citations)
FR999330A
Cited
FR56383E
Cited
US2708656A
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US2743224A
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US2584605A
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US2630307A
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US2670802A
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US2675081A
Cited
FR1147517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |