CPC C09K 8/36 (2013.01) [C07D 207/12 (2013.01); C07D 307/22 (2013.01)] | 19 Claims |
1. A wellbore fluid, comprising:
an oleaginous external phase;
a non-oleaginous internal phase; and
an emulsifier composition that includes a reaction product of i) a primary fatty amine component and ii) a capping agent selected from the group consisting of a cyclic anhydride or a diacid, wherein the reaction product comprises at least one of a first structure and a second structure, wherein the first structure includes a) a non-terminal amide group derived from an amine group of the primary fatty amine component and a carboxyl group of the capping agent and b) a terminal carboxylic acid group derived from the capping agent, and wherein the second structure includes a terminal cyclic group derived from ring closing of the non-terminal amide group and the terminal carboxylic acid group of the first structure.
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