摘要
本文对0.5米指示泥质含量的机理作了详细的分析,分析了0.5米电位求泥质含量(SH)的影响因素,指出了岩心分析SH和应用0.5米电位R_E计算SH时注意的事项。肯定了目前计算泥质含量用的经验系数GCUR=5是合理的.提出了对0.5米电位R_E作油气影响校正的方法.详细对比了5口取心并在兴隆台油层段的岩心分析SH值与用0.5米电位计算的SH值。
This paper analyzes the mechanism of taking 0.5 meter normal resistivity curve as shale content (SH) indicator in detail. The effect of various factors on 0.5 normal resistivitymeasurements in determining shale content is discussed. Points for attention are given in thecomputation of SH from 0.5 normal curve R_E. The experimental exponent GCUR = 5which is now used to determine shale content is considered reasonable. Furthermore, amethod of hydrocarbon correction of 0.5 normal curve R_E is presented. And the computedvalues of shale content from 0.5 normal curve is compared with core-analysis values of shalecontent from 5 coring wells in this paper.
