通过对实验室岩心分析资料的研究 ,认为高电阻率水层的成因是岩性变化、残余油的存在及局部地区地层水矿化度的变化引起的。采用聚类判别分析技术 ,以他拉哈地区为研究工区 ,确定油水层分布 ,进而达到对其它储层流体性质进行识别的目的。经过近 1年地区试油资料的验证 ,解释符合率达到了 87.5 % ,比应用该方法前的解释符合率提高了 2 3.8个百分点 ,收到了较好的地质效果。 Through the analysis of laboratory core analysis data, it is considered that the cause of high resistivity water layer is caused by lithologic changes, the presence of residual oil and the change of formation water salinity in some areas. Using cluster discriminant analysis technology, taking Talaha area as research area, the distribution of oil-water layer is determined, and the fluid properties of other reservoirs are identified. After nearly one year of verification of the test oil data, the interpretation coincidence rate reached 87.5%, which was 28.8% higher than that before the application of the method and received good geological results.