粉煤灰具有颗粒细,密度小,空隙大的性质,是其渗透性好,本文所研制的粉煤灰堵剂是由质量分数为40%的粉煤灰和10%的固化剂组成,并对该堵剂进行性能评价,实验结果表明该堵剂体系具有很好的抗温性,抗盐性和老化稳定性,岩心流动实验表明,封堵率高达90%堵剂的封堵强度高,满足油田堵水的需求。 Fly ash has the characteristics of fine particle, small density and large voids and good permeability. The fly-ash plugging agent developed in this paper is composed of fly ash with mass fraction of 40% and curing agent of 10% The performance of the plugging agent was evaluated. The experimental results show that the plugging agent has good temperature resistance, salt resistance and aging stability. The core flow experiments show that plugging rate of 90% plugging agent is high, Satisfy the needs of oilfield water shutoff.