US3195629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of partially oxidized oil in a waterflooding process
Assignee: Pan American Petroleum Corp
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Filing: 1962-12-31
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Granted: 1965-07-20
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Robert O Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN THE PROCESS FOR RECOVERING OIL FROM AN OIL-BEARING FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL, IN WHICH PROCESS A VOLUME OF AIR AND A VOLUME OF ALKALINE WATER ARE INJECTED INTO SAID FORMATION THROUGH SAID AT LEAST ONE INJECTION WELL, AND THEN FLOODING WATER IS INJECTED THROUGH SAID AT LEAST ONE INJECTION WELL AND INTO SAID FORMATION AHEAD OF SAID FLOODING WATER A VOLUME OF OIL EQUIVALENT TO AT LEAST ABOUT 100 BARRELS OF OIL PER LINERAR FOOT OF THICKNESS OF FORMATION TO BE FLOODED, THE ALKALINE WATER BEING AT LEAST ABUT 0.1 MOLAR WITH A BASE AND THE VOLUME OF THE AIR BEING AT LEAST ABOUT 1/2 THE VOLUME OF THE ALKALINE WATER.
Claim 2
Dependent Claim
122 words
IN THE PROCESS FOR RECOVERING OIL FROM AN OIL-BEARING FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL, IN WHICH PROCESS A VOLUME OF AIR AND A VOLUME OF ALKALINE WATER ARE INJECTED INTO SAID FORMATION THROUGH SAID AT LEAST ONE INJECTION WELL, AND THEN FLOODING WATER IS INJECTED THROUGH SAID AT LEAST ONE INJECTION WELL AND INTO SAID FORMATION AHEAD OF SAID FLOODING WATER A VOLUME OF OIL EQUIVALENT TO AT LEAST ABOUT 100 BARRELS OF OIL PER LINERAR FOOT OF THICKNESS OF FORMATION TO BE FLOODED, THE ALKALINE WATER BEING AT LEAST ABUT 0.1 MOLAR WITH A BASE AND THE VOLUME OF THE AIR BEING AT LEAST ABOUT 1/2 THE VOLUME OF THE ALKALINE WATER.
References Cited (Backward Citations)
US2927637A
Cited
US3034531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |