US3148730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery process
Assignee: Sinclair Research Inc
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Filing: 1960-06-27
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Granted: 1964-09-15
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Don R Holbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:39
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
IN A METHOD EMPLOYING A WATER-FLOODING MEDIUM AND COOPERATING INPUT AND OUTPUT WELLS FOR RECOVERING OIL FROM AN UNDERGROUND OIL-BEARING FORMATION UNDERLAIN BY A WATER-BEARING FORMATION, SAID FORMATIONS EXHIBITING PATHS OF VERTICAL PERMEABILITY TO WATER BETWEEN THE OIL AND WATER FORMATION, THE STEPS COMPRISING INTRODUCING INTO THE WATER-BEARING FORMATION A VISCOUS AQUEOUS MEDIUM AND INTRODUCING IN SAID WATER-BEARING FORMATION SAID WATER-FLOODING MEDIUM TO MOVE SAID VISCOUS AQUEOUS MEDIUM TOWARDS AN OUTPUT WELL, INTRODUCING THROUGH AN INPUT WELL IN COMMUNICATION WITH THE OIL BEARING FORMATION SAID WATER-FLOODING MEDIUM INTO SAID OIL-BEARING FORMATION TO MOVE AN OIL BANK TOWARDS SAID OUTPUT WELL TO MAINTAIN AN OIL BANK HEAD OF SAID WATER-FLOODING MEDIUM AND ABOVE SAID VISCOUS AQUEOUS MEDIUM, INTRODUCING SAID WATER-FLOODING MEDIUM INTO BOTH OF SAID OIL- AND WATERBEARING FORMATIONS TO MAINTAIN SAID OIL BANK AHEAD OF SAID WATER-FLOODING MEDIUM AND AT LEAST A PORTION OF SAID OIL BANK DIRECTLY ABOVE SAID VISCOUS AQUEOUS MEDIUM OVER A MAJOR PORTION OF THE TRAVEL OF SAID OIL BANK TO SAID OUTPUT WELL AND RECOVERING OIL FROM SAID OUTPUT WELL, SAID VISCOUS AQUEOUS MEDIUM HAVING A VISCOSITY OF ABOUT 1 TO 50 CENTIPOISES GREATER THAN SAID WATER-FLOODING MEDIUM.
Claim 2
Dependent Claim
193 words
IN A METHOD EMPLOYING A WATER-FLOODING MEDIUM AND COOPERATING INPUT AND OUTPUT WELLS FOR RECOVERING OIL FROM AN UNDERGROUND OIL-BEARING FORMATION UNDERLAIN BY A WATER-BEARING FORMATION, SAID FORMATIONS EXHIBITING PATHS OF VERTICAL PERMEABILITY TO WATER BETWEEN THE OIL AND WATER FORMATION, THE STEPS COMPRISING INTRODUCING INTO THE WATER-BEARING FORMATION A VISCOUS AQUEOUS MEDIUM AND INTRODUCING IN SAID WATER-BEARING FORMATION SAID WATER-FLOODING MEDIUM TO MOVE SAID VISCOUS AQUEOUS MEDIUM TOWARDS AN OUTPUT WELL, INTRODUCING THROUGH AN INPUT WELL IN COMMUNICATION WITH THE OIL BEARING FORMATION SAID WATER-FLOODING MEDIUM INTO SAID OIL-BEARING FORMATION TO MOVE AN OIL BANK TOWARDS SAID OUTPUT WELL TO MAINTAIN AN OIL BANK HEAD OF SAID WATER-FLOODING MEDIUM AND ABOVE SAID VISCOUS AQUEOUS MEDIUM, INTRODUCING SAID WATER-FLOODING MEDIUM INTO BOTH OF SAID OIL- AND WATERBEARING FORMATIONS TO MAINTAIN SAID OIL BANK AHEAD OF SAID WATER-FLOODING MEDIUM AND AT LEAST A PORTION OF SAID OIL BANK DIRECTLY ABOVE SAID VISCOUS AQUEOUS MEDIUM OVER A MAJOR PORTION OF THE TRAVEL OF SAID OIL BANK TO SAID OUTPUT WELL AND RECOVERING OIL FROM SAID OUTPUT WELL, SAID VISCOUS AQUEOUS MEDIUM HAVING A VISCOSITY OF ABOUT 1 TO 50 CENTIPOISES GREATER THAN SAID WATER-FLOODING MEDIUM.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |