It is shown in this paper that AM/MA/AMPS tercopolymer of relatively low molcular mass can be used safely as filtrate loss reducer for drilling fluids without notable viscosifying(thickening) effects.

• 本文报道的研究结果表明，分子量相对较低的AM／MA／AMPS共聚物可用作钻井液的降滤失剂而不显著增加钻井液的粘度。