Low fluid loss cementing compositions containing hydrolyzed acrylamide/2-acrylamido-2-methylpropane sulfonic acid derivative copolymers and their use

摘要

Improved cementing compositions and their use in cementing operations is disclosed, wherein copolymers of hydrolyzed acrylamide and 2-acrylamido-2-methylpropane sulfonic acid derivatives are used as fluid loss additives for aqueous hydraulic cement slurries.