After it is injected into the formation, the dissolution of clay cements induced by HF is reduced through clay enveloped by organic acidizing fluid, thus to ensure sufficient HF for quartz ma.

• 该酸液主要由有机酸、含氟盐和系列添加剂组成,注入地层后通过有机酸液对粘土的包裹作用,减少HF对粘土胶结物的溶蚀,从而确保有足够的HF对石英基质的溶蚀,起到了基质改造的作用。