US3770632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micellar fluids for injection well stimulation and oil recovery
Assignee: BP America Production Co
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Filing: 1972-03-06
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Granted: 1973-11-06
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Expires: 1992-03-06
Abstract
Abstract MICELLAR SOLUTIONS HIGHLY STABLE TO A WIDE RANGE OF TEMPERATURES, HIGH SHEAR RATES THROUGH AN ORIFICE AND SALT CONCENTRATIONS UP TO ABOUT 15,000 P.P.M. ARE PREPARED FROM A HYDORCARBON OIL, A SURFACTANT, AND A COSURFACTANT, THE LATTER BEING COMPOSED OF AN ETHYLENE OXIDE ADDUCT OF A PREFERENTIALLY OIL-SOLUBLE PRIMARY ALOCHOL AND A C4 TO C6 ALCOHOL. IN CASES OF HIGH WATER CONTENT SOLUTIONS, I.E., 90-95% WATER, THE HYDROCARBON MAY BE OMITTED.
Inventors
- 👤 J Gilliam
- 👤 D Dauben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:49
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936; Y10S507/937; Y10S507/938
Claims Analysis
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |