应用延缓交联体系进行深部调剖

Deep profile control by delayed crosslink-ing system

应用延级交联体系进行深部调剖是一种十分有效的改善水驱波及效率的方法。本文对延缓交联体系的凝胶形成机理、性质以及该体系的注入量和注入方式进行了研究。岩心评价结果表明：延级交联体系的最佳注入量为高渗透夹层孔隙体积的１／３～１／２，对具有稳定隔层的非均质油藏，应采用分层注入。矿场试验效果表明，技工艺可有效地封堵高渗透层，扩大水驱波及体积，起到增油降水的作用。

eep profile control by delayed crosslinking system is an effective approach to improvewater flood sweep efficiency.The form mechanism and properties of gel in delayed crosslink-ing system,and system injection volume and manner are discussed in this paper.The core testevaluation shows that the optimum injection volume of the delayed crosslinking system isone-third to a half of the high permeability streak volume,and that separate-layer injectionshould be applied to heterogeneous reservoirs with stable water-resisting layers.