A method of modifying the permeability to water of a subterranean formation comprising injecting into the subterranean formation an aqueous composition comprising from about 0.005 percent to about 2 percent, by weight, of an alkyl or an alkylene oxide branched polyhydroxyetheramine or a salt thereof, wherein the fatty alkyl or alkylene oxide branched polyhydroxyetheramine is prepared by reacting a diepoxide with a) one or more fatty alkyl or alkylene oxide functionalized amines or a mixture of one or more alkylene oxide functionalized amines and b) one or more amines having two reactive hydrogen atoms and c) optionally reacting the resulting polyhydroxyetheramine with an acid or alkylating agent to form the salt.
一种改变地下岩层
水渗透性的方法,包括向地下岩层注入一种
水性组合物,该组合物包含约 0.005% 至约 2% (按重量计)的脂肪烷基或氧化亚烷基支链聚羟基醚胺或其盐、其中脂肪烷基或环氧亚烷基支链聚羟基醚胺是通过二
环氧化物与 a) 一种或多种脂肪烷基或环氧亚烷基官能化胺或一种或多种环氧亚烷基官能化胺和 b) 一种或多种具有两个活性氢原子的胺的混合物反应制备的,以及 c) 可选择地将生成的聚羟基醚胺与酸或烷基化剂反应以形成盐。