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纯高岭土和油田实际岩心的流动模拟试验都验证了在相同温度下 ,加入盐酸会加快氟硅酸与铝硅酸盐的二次反应。在砂岩基质酸化过程中 ,H2 SiF6 AlFx(3 -x) + HCl之间存在一种化学平衡 ,该平衡用以控制氢氟酸与铝硅酸盐的一次反应和二次反应的化学计量系数。在土酸酸化反应中 ,盐酸不仅用来溶解碳酸盐矿物 ,而且具有调节氟硅、氟铝配合物平衡的另一作用 ;盐酸的浓度越高 ,F/Al越低 ,所造成的酸化二次伤害几率越小
The flow simulation tests on the pure kaolins and the actual cores in the field both verify that the addition of hydrochloric acid will accelerate the secondary reaction of fluosilicic acid and aluminosilicate at the same temperature. During sandstone matrix acidification, there is a chemical equilibrium between H2SiF6AlFx (3-x) + HCl that controls the stoichiometry of the primary and secondary reactions of hydrofluoric acid with the aluminosilicate. Hydrochloric acid is not only used to dissolve carbonate minerals in earth acidification reaction, but also has another effect of regulating the balance of fluorine silicon and aluminum fluoride complexes. The higher the concentration of hydrochloric acid, the lower the F / Al, Lesser probability of injury