Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1982-06-07
1984-03-06
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
252 85A, 252 85C, 252 85P, 252 85LC, 252 855R, 536 96, C08B 1120, C09K 300, C09K 700
Patent
active
044355645
ABSTRACT:
Processes are disclosed for activating hydroxyethyl cellulose (HEC) such that the HEC will disperse and hydrate in compatible heavy brines having a density greater than about 13.5 pounds per gallon containing one or more salts selected from the group consisting of calcium chloride, calcium bromide, zinc chloride, and zinc bromide, at ambient temperatures such that the HEC will be at least 80% hydrated within one hour.
The activation process comprises admixing the HEC with an organic liquid which has no appreciable swelling effect on the HEC and an amine activator.
The invention also provides activated HEC compositions and a process of increasing the viscosity of a heavy brine utilizing these compositions.
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Griffin Ronald W.
House Roy F.
Venture Innovations, Inc.
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