US3740343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High water content oil-external micellar dispersions
Assignee: Marathon Oil Co
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Filing: 1970-12-21
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Granted: 1973-06-19
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Expires: 1990-12-21
Abstract
Abstract A NOVEL HIGH WATER CONTENT OIL-EXTERNAL MICELLAR DISPERSION (CONTANING 55% TO ABOUT 90% WATER) IS OBTAINED BY MIXING ABOUT 4 TO ABOUT 40% HYDROCARBON, AT LEAST 4% SURFACTANT, ABOUT 0.01% TO ABOUT 20% COSURFACTANT, ABOUT 55% TO ABOUT 9/% A AQUEOUS MEDIUM AND ABOUT 0.001% TO ABOUT 4% BY WEIGHT OF ELECTROLYTE, THE ABOVE PERCENTS BASED ON TOTAL VOLUME UNLESS OTHERWISE SPECIFIED. THE DISPERSION IS COMPATIBLE WITH CRUDE OIL AND USEFUL, FOR EXAMPLE, IN SECONDARY AND TERTIARY SUBTERRANEAN FLOODING OPERATIONS TO RECOVER CRUDE OIL.
Inventors
- 👤 M Svaldi
- 👤 S Jones
- 👤 W Roszell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:17
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; C09K23/00; C09K23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |