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罗家地区泥页岩由于岩相变化快、岩性不稳定,其矿物组分含量解释模型构建成为解释难点。为此,从取值方式和建模思路入手对模型进行了对比和优选。取值方式方面,通过对比点—点、段—点和段—段3种不同取值方式带来的差异,结果显示,段—段取值方式的相对误差最小,小于8%,故建议选取段—段取值方式;建模思路方面,在基于体积模型反演的数值法和基于数据拟合的模拟法2大类思路的基础上,通过对罗69井测井曲线的处理及分析,后者精度略高于前者,且后者原理简单且易于操作,因此建议在数据拟合的基础上,加以地质条件约束,构建岩相分类基础上的矿物组分含量解释模型。
The shale in Luojia area is difficult to interpret because of the rapid change of lithofacies and the instability of lithology. To this end, starting from the value of modeling and modeling ideas to compare and optimize the model. By comparing the difference of three different values of point-point, segment-point and segment-segment, the results show that the relative error of segment-segment value is the smallest, less than 8%, so it is suggested to choose In terms of modeling ideas, based on numerical methods based on inversion of volumetric model and two kinds of simulation methods based on data fitting, this paper analyzed and processed logging curves of Luo 69 well, The accuracy of the latter is slightly higher than that of the former, and the latter is simple and easy to operate. Therefore, based on the data fitting, it is suggested to constrain the geological conditions and construct the interpretation model of the content of the mineral components based on the classification of the lithofacies.