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有机延缓交联及油包水乳液延缓交联方法在实现凝胶深部调剖、改善开发效果方面存在一些不足,为此制备了多重乳液延缓交联体系,研究了其热稳定性及运移行为。这种交联体系是在柴油为油相、Cr(AC)3交联剂为内水相、聚氧乙烯失水山梨醇单月桂酸酯(T20)为水包油乳化剂、聚异丁烯基丁二酰亚胺(T161)为油包水乳化剂的条件下制成的多重乳液延缓交联体系,具有更高的热稳定性。此外,传统Cr(AC)3经多重乳液包覆处理后,在多孔介质中的运移能力提高2.12倍。可作为较高油藏温度条件下高含水率、高采出程度注水开发油田实施深部调剖措施的有效手段。
Organic delayed crosslinking and water-in-oil emulsion delayed crosslinking method in the realization of deep gel profile control, to improve the development effect of some deficiencies, for which preparation of multiple emulsion delay crosslinking system, the study of its thermal stability and migration behavior . The crosslinking system is that the diesel is the oil phase, the Cr (AC) 3 crosslinking agent is the internal water phase, the polyoxyethylene sorbitan monolaurate (T20) is the oil-in-water emulsifier, the polyisobutylene butyl Diimide (T161) is a multi-emulsion delayed crosslinking system prepared under the condition of water-in-oil emulsifier, which has higher thermal stability. In addition, the migration ability of traditional Cr (AC) 3 in porous media increased 2.12 times after being coated with multiple emulsions. It can be used as an effective measure to implement deep profile control measures in oilfields with high water cut and high oil recovery under the condition of higher reservoir temperature.