US2807570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of petroleum oil
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-01-16
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Granted: 1957-09-24
•
Expires: 1973-01-16
Abstract
No abstract record available.
Inventors
- 👤 David M Updegraff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/838; Y10S435/842; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN THE RECOVERY OF PETROLEUM OIL FROM THE OIL-BEARING FORMATION HAVING A WELL LEADING THERETO, THE METHOD COMPRISING INOCULATING SAID FORMATION THROUGH SAID WELL WITH A GAS-PRODUCING BACTERIA SELECTED FROM THE GROUP CONSISTING OF THE FACULTATIVE AND OBLIGATE ANAEROBES, PASSING INTO SAID FORMATION THROUGH SAID WELL WATER CONTAINING A WATER-SOLUBLE CARBOHYDRATE, MAINTAINING SAID WATER CONTAINING SAID CARBOHYDRATE IN SAID FORMATION SUBJECT TO THE ACTION OF SAID BACTERIA AND FERMENTING SAID CARBOHYDRATE IN SAID FORMATION BY SAID BACTERIA WHEREBY FERMENTATION GASES ARE PRODUCED IN SAID FORMATION, AND THEREAFTER RECOVERING PETROLEUM OIL FROM SAID FORMATION ASSISTED BY SAID FERMENTATION GASES.
Claim 2
Dependent Claim
98 words
IN THE RECOVERY OF PETROLEUM OIL FROM THE OIL-BEARING FORMATION HAVING A WELL LEADING THERETO, THE METHOD COMPRISING INOCULATING SAID FORMATION THROUGH SAID WELL WITH A GAS-PRODUCING BACTERIA SELECTED FROM THE GROUP CONSISTING OF THE FACULTATIVE AND OBLIGATE ANAEROBES, PASSING INTO SAID FORMATION THROUGH SAID WELL WATER CONTAINING A WATER-SOLUBLE CARBOHYDRATE, MAINTAINING SAID WATER CONTAINING SAID CARBOHYDRATE IN SAID FORMATION SUBJECT TO THE ACTION OF SAID BACTERIA AND FERMENTING SAID CARBOHYDRATE IN SAID FORMATION BY SAID BACTERIA WHEREBY FERMENTATION GASES ARE PRODUCED IN SAID FORMATION, AND THEREAFTER RECOVERING PETROLEUM OIL FROM SAID FORMATION ASSISTED BY SAID FERMENTATION GASES.
References Cited (Backward Citations)
US2360327A
Cited
US2673828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |