The titled ultra-concentrated AA/AM/AMPS tercopolymer inverse emulsion(IE) with white oil as dispersing medium can be used directly in water base drilling fluids as filtrate loss reducer.

• 所合成的AA/AM/AMPS三元共聚合超浓反相乳液以白油为外相,可直接用作水基钻井液的降滤失剂。