US3126952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterflooding method
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD FOR THE RECOVERY OF OIL FROM AN OIL-BEARING EARTH FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL COMPRISING INTRODUCING INTO SAID AT LEAST ONE INJECTION WELL AND INTO SAID OILBEARING FORMATION AN OIL SOLUTION CONTAINING AN OIL-SOLUBLE SURFACE ACTIVE AGENT CAPABLE OF EMULSIFYING WATER IN OIL AND AN OIL-SOLUBLE, SUBSTANTIALLY WATER-INSOLUBLE, ALCOHOL IN AN AMOUNT SUFFICIENT TO MODIFY THE EFFECTS OF SAID SURFACE ACTIVE AGENT, THEN INJECTING FLOODING WATER INTO SAID AT LEAST ONE INJECTION WELL AND INTO SAID FORMATION TO CAUSE SAID OIL SOLUTION TO FLOW THROUGH SAID FORMATION AND RECOVERING OIL FROM SAID AT LEAST ONE PRODUCING WELL.
Claim 2
Independent Claim
108 words
A METHOD FOR THE RECOVERY OF OIL FROM AN OIL-BEARING EARTH FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND AT LEAST ONE PRODUCING WELL COMPRISING INTRODUCING INTO SAID AT LEAST ONE INJECTION WELL AND INTO SAID OILBEARING FORMATION AN OIL SOLUTION CONTAINING AN OIL-SOLUBLE SURFACE ACTIVE AGENT CAPABLE OF EMULSIFYING WATER IN OIL AND AN OIL-SOLUBLE, SUBSTANTIALLY WATER-INSOLUBLE, ALCOHOL IN AN AMOUNT SUFFICIENT TO MODIFY THE EFFECTS OF SAID SURFACE ACTIVE AGENT, THEN INJECTING FLOODING WATER INTO SAID AT LEAST ONE INJECTION WELL AND INTO SAID FORMATION TO CAUSE SAID OIL SOLUTION TO FLOW THROUGH SAID FORMATION AND RECOVERING OIL FROM SAID AT LEAST ONE PRODUCING 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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |