Study on an intelligent nanocomposite water plugging and profile control system
In order to solve the problems of high water content,difficulty in plugging and low recovery rate of high temperature and high salt fragmental rock reservoir,an ALT intelligent nano-composite water plugging pro-file control system was proposed.The particle size and interfacial tension of the profile control system were mea-sured by Zate potentiometer and SCZL203 automatic tensiometer,and the sealing performance of the system was evaluated by using high-pressure micro displacement device.The experimental results showed that the com-pound agent had good solubility in water,could effectively improve the reservoir wettability,and had a good oil washing effect.At the same time,ALT intelligent nanocomposite water plugging and profile control system had small particle size,easy to enter the reservoir micro-pore throat,good sealing effect under reservoir conditions,good oil-water selectivity,water plugging rate up to 88.1%,and the total recovery rate of 56.9%.
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