US3340930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery process using aqueous microbiological drive fluids
Assignee: Phillips Petroleum Co
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Filing: 1965-08-16
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Granted: 1967-09-12
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Donald O Hitzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR PRODUCING OIL FROM AN OIL-BEARING STRATUM COMPRISING THE STEPS OF: (1) INJECTING INTO SAID STRATUM THRU A WELL THEREIN AN AQUEOUS SLUG OF A BY-PRODUCT OF AN OIL FERMENTATION PROCESS CONTAINING OIL. WATER, SALTS, AND LIVE CELLS OF YEAST, BACTERIA OR MIXTURES THEREOF, SAID CELLS HAVING THE CAPACITY TO ASSIMILTE HYDROCARBONS DURING METABOLISTIC ACTION; (2) THEREAFTER, INJECTING AQUEOUS DRIVING FLUID THRU SAID WELL INTO SAID STRATUM SO AS TO DRIVE THE SLUG OF STEP (1) AND FERMENTATION PRODUCTS THEREOF THRU SAID STRATUM TO A PRODUCTION WELL THEREIN, DISPLACING HYDROCARBONS FROM SAID STRATUM INTO SAID PRODUCTION WELL; AND (3) RECOVERING PRODUCED HYDROCARBONS FROM SAID PRODUCTION WELL.
Claim 2
Dependent Claim
108 words
A PROCESS FOR PRODUCING OIL FROM AN OIL-BEARING STRATUM COMPRISING THE STEPS OF: (1) INJECTING INTO SAID STRATUM THRU A WELL THEREIN AN AQUEOUS SLUG OF A BY-PRODUCT OF AN OIL FERMENTATION PROCESS CONTAINING OIL. WATER, SALTS, AND LIVE CELLS OF YEAST, BACTERIA OR MIXTURES THEREOF, SAID CELLS HAVING THE CAPACITY TO ASSIMILTE HYDROCARBONS DURING METABOLISTIC ACTION; (2) THEREAFTER, INJECTING AQUEOUS DRIVING FLUID THRU SAID WELL INTO SAID STRATUM SO AS TO DRIVE THE SLUG OF STEP (1) AND FERMENTATION PRODUCTS THEREOF THRU SAID STRATUM TO A PRODUCTION WELL THEREIN, DISPLACING HYDROCARBONS FROM SAID STRATUM INTO SAID PRODUCTION WELL; AND (3) RECOVERING PRODUCED HYDROCARBONS FROM SAID PRODUCTION WELL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |