Thermally stable compositions and use thereof in drilling fluids
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United States of America Patent
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Mar 15, 2011
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Oct 22, 2007
filing date -
Oct 22, 2007
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Abstract
A composition is comprised of a mixture of the reaction product of an amine and a poly-functional isocyanate, and the reaction product of (i) a carboxylic acid with at least two carboxylic moieties; (ii) a polyamine having an amine functionality of two or more; and a chemical selected from the group consisting of (i) alkoxylated alkyl amines, (ii) fatty acid amides and (iii) mixtures thereof, and it is used as a drilling fluid additive.
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