Distribution feature of oil,gas and water in reservoir and physical difference are the bases of geophysical exploration,and it is considered by analysis that geo-electrical difference of reservoir is one of the most distinctive features.

• 油气藏的油气水分布特征及其物性差异是地球物理勘探的基础,油气藏的电性差异是其中最明显的特征之一,同时油气藏又是一个多相动态平衡系统,其中的双相介质形成的双电层是油气藏激发极化异常产生的根源。