Patent US3714062A successfully refreshed from Google Patents.
US3714062A
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US
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Straight chain sulfonates for use in solubilized oil-water solutions for miscible waterflooding
Assignee: BP America Production Co
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Filing: 1969-08-08
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Granted: 1973-01-30
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Expires: 1989-08-08
Abstract
Abstract SOLUBILIZED OIL-WATER SOLUTIONS OF HIGH WATER CONTENT AND RESISTANT TO CALCIUM AND MAGNESIUM IONS ARE PREPARED BY MIXING A SOLUTION OF AN ALKALI METAL ALIPHATIC HYDROCARBON POLYMER SULFONATE HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 350 TO ABOUT 675 WITH A COSURFACTANT OR COUPLING AGENT WHICH MAY BE A WATER SOLUBLE ALCOHOL, AN OIL SOLUBLE ALCOHOL HAVING NOT MORE THAN 10 CARBON ATOMS, OR AN EHTYLENE OXIDE ADDUCT OF AN ALCOHOL HAVING FROM 4 TO 10 CARBON ATOMS. THESE SOLUTIONS ARE USEFUL AS OIL SOLVENTS IN MISCIBLE WATERFLOODING AND CAN ALSO BE EMPLOYED AS SOLVENTS IN WATER INJECTION WELL CLEANOUT PROCEDURES.
Inventors
- 👤 W Askew
- 👤 H Froning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:11
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |