Compositions – Leather or fur treating
Patent
1985-03-25
1987-12-15
Guynn, Herbert B.
Compositions
Leather or fur treating
166274, 166275, E21B 4322
Patent
active
047131853
ABSTRACT:
Sacrificial agents employed in methods of obtaining oil from rock formations by surfactant flooding comprising oxidized and/or chlorinated lignin and lignin-like derivatives obtained form inexpensive and readily available sources. In one form of the invention such derivatives present in E-stage wood pulp bleach plant effluent are concentrated by the use of macroporous resins, reverse osmosis or membrane dialysis. In another form of the invention, new sources of the derivatives are provided from forest industry by-products. In a further form of the invention, the derivatives are complexed with iron which significantly improves the sacrificial agent activity of the derivatives. Such sacrificial agents reduce the amount of expensive surfactant required in the oil recovery method.
REFERENCES:
patent: 2491832 (1949-12-01), Salvesen et al.
patent: 2819295 (1958-01-01), Herrick et al.
patent: 2935504 (1960-05-01), King et al.
patent: 3232925 (1966-02-01), King et al.
patent: 3278425 (1966-10-01), King et al.
patent: 3522844 (1970-08-01), Abdo
patent: 3546197 (1970-12-01), Benko
patent: 3652407 (1972-03-01), Paleos
patent: 4006779 (1977-02-01), Kalfoglou
patent: 4069217 (1978-01-01), Detroit et al.
patent: 4133385 (1979-01-01), Kalfoglou
patent: 4142582 (1979-03-01), Kalfoglou
patent: 4157115 (1979-06-01), Kalfoglou
patent: 4235290 (1980-11-01), Kalfoglou
patent: 4236579 (1980-12-01), Kalfoglou
patent: 4273191 (1981-06-01), Hradel
patent: 4313500 (1982-02-01), Johnson, Jr. et al.
patent: 4611659 (1986-09-01), DeBons et al.
Wood Chemicals Inject New Life Into Tired Oil Wells, Chemical Week, Jun. 20, 1979.
Chemicals for Enhanced Oil Recovery Biennial Report, Apr. 1978-Mar. 1980 A. L. Compere, et al., Oak Ridge National Laboratory, Oak Ridge, Tenn., 37830, Mar. 1981, pp. vi and vii.
American Can and Texaco Sign Agreement on Lignin, Paper Trade Journal, Jun. 30, 1979.
Howard John
Stirling Marie
Canadian Patents and Development Ltd.
Guynn Herbert B.
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