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CEMENT COMPOSITIONS COMPRISING HUMIC ACID GRAFTED FLUID LOSS CONTROL ADDITIVES AND METHODS OF USING THEM
CEMENT COMPOSITIONS COMPRISING HUMIC ACID GRAFTED FLUID LOSS CONTROL ADDITIVES AND METHODS OF USING THEM
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机译:包含腐殖酸接枝的流失控制添加剂的水泥组合物及其使用方法
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摘要
A cement composition comprising water, a cement, and a fluid loss control additive, the fluid loss control additive comprising a graft copolymer. The graft copolymer comprises a backbone and at least four grafted monomers selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid, vinylphosphonic acid, diallyldimethylammonium chloride, and salts thereof. The backbone of the graft copolymer comprises a humic acid salt. The cement compositions may be used in cementing operations.
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