选用丙烯酰胺（AM）、甲基丙烯酰氧乙基三甲基氯化铵（DMC）、烯丙基聚乙二醇（APEG）以及十六烷基二甲基烯丙基氯化铵（DMAAC-16）4种单体，通过单因素法对合成条件进行优化，得到一种共聚物缓速剂。实验结果表明，该缓速剂具有良好的降低酸岩反应速率的效果；在90℃、含有5 000 mg/L NaCl的条件下仍然具有良好的缓速效果；CaCl₂对于该缓速剂具有一定的促进作用。

Aiming at solving the problems of retarded acid in the current acidification,a copolymer based acid retarder is synthesized by using acrylamide (AM),[2-(methacryloyloxy) ethyl]-trimethylammonium chloride (DMC),allyl polyethylene glycol (APEG) and hexadecyl trimethyl allylammonium chloride (DMAAC-16) as monomers through optimization of synthesis conditions by single-factor experiment method.The result shows that this acid retarder has outstanding effect on reducing the reaction rate between acid and rock,has still a good retarding effect at 90℃ with the condition containing 5 000 mg·L^-1 NaCl.The presence of CaCl₂ has a positive effect on this retarder.