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研究了两类(硅酸盐和碳酸盐)沉淀型的双液法堵剂。对比了这些堵剂中钙盐、镁盐和铁(亚铁和高铁)盐等堵剂的特点。测定了它们的沉淀量、腐蚀速率、堆积体积和水玻璃稠化后的粘度,找出了用于油田堵水的配方。本文也研究了亚铁盐的缓蚀剂选择。
Two classes of (silicate and carbonate) precipitation type two-liquid method plugging agents were studied. Comparison of these plugging agent in the calcium, magnesium and iron (ferrous and high iron) salt and other blocking agent characteristics. The amount of precipitation, the corrosion rate, the bulk volume and the viscosities after water glass thickening were measured, and the formulation used to block the water in the oil field was found. This paper also studies the choice of corrosion inhibitor for ferrous salts.