In a subterranean formation, complexation of metal ions can often be desirable in order to mitigate reactivity of the metal ions. However, many chelating agents used for this purpose are commercially manufactured in an alkali metal salt form that may not be entirely suitable for use downhole. The working pH range of some types of chelating agents may also be limiting. Accordingly, methods for treating a subterranean formation can comprise: providing an acidic treatment fluid comprising a sulfonated iminodiacetic acid; introducing the acidic treatment fluid into a subterranean formation; and at least partially dissolving an acid-reactive substance in the subterranean formation while complexing one or more metal ions with the sulfonated iminodiacetic acid.
在地下层地质构造中,
金属离子的络合作用通常是可取的,以减轻
金属离子的反应性。然而,许多用于此目的的
螯合剂是以碱
金属盐形式商业生产的,可能并不完全适合井下使用。某些类型的
螯合剂的工作pH范围也可能受到限制。因此,处理地下层地质构造的方法可以包括:提供含有磺化
亚胺二
乙酸的酸性处理液;将酸性处理液引入地下层地质构造中;并且在用磺化
亚胺二
乙酸络合一个或多个
金属离子的同时,至少部分溶解地下层地质构造中的酸反应物质。