苏里格气田西区盒8段储层电阻率形态及测井解释研究

Study on Western Sulige Gas Field He8 Segment Reservior's Resistivity Shapes and Log Interpretation

苏里格气田西区盒8段储层岩性和物性复杂、电阻率曲线形态复杂,测井评价难度极大。综合核磁共振成像测井、岩心扫描镜片、岩心观察、试气和生产等动态数据,排除压裂施工的影响,优选出典型的气层、气水层和水层,归纳出相应电阻率曲线形态类型。发现气层、气水层和水层均出现钟型、箱型和平稳波动型,分析造成因素。总结出了一套适合该地区测井解释的方法,绘制了交会图版,对高不动水饱和度层段结合视地层水电阻率法,取得了很好的效果。

Western Sulige gas field he8 segment, with complex lithology, physical properties, and resistivity curve shapes, the logging evaluation is extremely difficult. Having integrated NMR imaging logging, cores SEM, cores observation, gas test and production data, and eliminated the impact of fracturing, typical gas, gas-water and water layers are optimal selected, summed up the corresponding resistivity curve shape types, found gas, gas-water and water layers are bell-shaped, box and smooth fluctuations type, and these cause factors are analysed. A set of log interpretation method suitable for the region are summed up, drew a crossplot, combined with apparent water resistivity technique for high unmovable water saturation intervals, and good results are achieved.