申请人:HALLIBURTON COMPANY
公开号:EP0501776A1
公开(公告)日:1992-09-02
In the treatment of a subterranean formation with an aqueous fluid, certain quaternary ammonium additives are included in the fluid to stabilize the formation and control formation damage caused by contacting the formation with the aqueous fluid. The quaternary ammonium additives are compounds of the general formulae:
AR₁ Z,
AR₂A Z,
R₁B′R₁ Z,
R₁B′R₂B′R₁ Z,
C′R₃ Z,
D′(R₁)₃ Z
E Y′, and
F′(R₁)₄ Z
wherein
R₁ is ―CH₂COOH, ―CH₂CH₂OH, ―CH₂CH₂CH₂OH or ―CH₂CHOHCH₃;
R₂ is ―CH₂CH₂―, ―CH₂CHOHCH₂―, ―CH₂CH₂CH₂―, ―CH₂CH₂CH₂CH₂―, or ―CH₂CH₂OCH₂CH₂― ;
where each R₄ is hydrogen or the group (CH₂)nCH₃ wherein n is 0 or from 1 to 5, at least one of said R₄ substituents being a ―(CH₂)nCH₃ group;
Z is an anion selected from halides, nitrates, nitrites, sulfites, sulfates and carboxylates; and
Y′ is a carboxylate anion.
在用含水流体处理地下地层时,在流体中加入某些季铵添加剂,以稳定地层并控制地层与含水流体接触造成的地层破坏。季铵添加剂是通式如下的化合物:
AR₁ Z、
AR₂A Z、
R₁B′R₁ Z、
R₁B′R₂B′R₁ Z、
C′R₃ Z、
D′(R₁)₃ Z
E Y′,以及
F′(R₁)₄ Z
其中
R₁ 是 -CH₂COOH、-CH₂CH₂OH、-CH₂CH₂CH₂OH 或 -CH₂CHOHCH₃;
R₂ 是 -CH₂CH₂-, -CH₂CHOHCH₂-, -CH₂CH₂CH₂-, -CH₂CH₂CH₂-, 或 -CH₂CH₂CH₂CH₂- ;
其中每个 R₄ 是氢或基团 (CH₂)nCH₃ 其中 n 是 0 或 1 至 5,至少一个所述 R₄ 取代基是-(CH₂)nCH₃ 基团;
Z 是选自卤化物、硝酸盐、亚硝酸盐、亚硫酸盐、硫酸盐和羧酸盐的阴离子;以及
Y′ 是羧酸根阴离子。