双激发无机调堵剂的研究与评价

adjustable plugging agent

通过实验室研究确定了双激发无机调堵剂的最佳配方:15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。固化时间32h,固化强度大于1.4MPa。调堵剂初始粘度36 m Pa·s,85℃养护18h粘度小于320m Pa·s。对不同渗透率岩芯,调堵剂的堵水率大于90%。

The best formula of the double excitation inorganic ad- justable plugging agent was determined through laboratory re- search： 15% slag ＋ 0.8% activator ＋ 4% dispersant ＋ 2.5% retard- er, with a curing time of 32h, and a curing strength over 1.4Mpa. The initial viscosity of adjustable plugging agent is 36mPa.s, and after curing for eighteen hours in 85 degrees Celsius, viscosity is less than 320mPa.s. For cores with different permeability, the wa- ter plugging rate of adjustable plugging agent is more than 96%.