Low resistivity pays of Wennan Oilfield are caused by high irreducible water saturation, high formation water salinity or high shale volume from analysis of well logs and core data.

• 本文利用测井、岩心资料对文南油田低阻油层的成因进行了分析,该油田的低阻油层主要由高束缚水饱和度、高地层水矿化度,以及高泥值含量引起。