储层岩心水敏性影响因素分析
Journal of Jianghan Petroleum Institute（2003）
Abstract
注入流体的矿化度与储层岩心中的粘土矿物不配伍时,可引起粘土矿物水化膨胀和分散,使储层渗透率降低.研究结果表明,岩心水敏损害程度与注入流体的矿化度、pH值及矿化度递减速率有关.当注入流体矿化度低于15000mg/L时,渗透率明显降低;矿化度递减速率越快,水敏损害程度越大;碱性介质增强岩心水敏性而酸性介质能抑制岩心水敏性.
MoreKey words
water sensitivity,reservoir cores,factor analysis
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