基于岩性横向预测的方法在无井区烃源岩研究中的应用

Application of Lithology-Based Horizontal Prediction Method to Source Rocks Study in the Area Without A Well

岩性横向预测技术被广泛地应用在储层研究中，是一项较为成熟的研究方法和手段。选取我国东部研究程度较高的椠富油凹陷，应用属性重构测井约束地震反演技术进行烃源岩层预测、通过现有录井、测井资料，分析了主要目的层系的视波阻抗与岩性的关系．以波阻抗反演剖面为手段，结合原始地震资料和烃源岩地球化学分析资料，对该凹陷的烃源岩层的空间展布．尤其是无井区及未钻穿区域烃源岩进行预测。研究结果表明，地震预测厚度与通过单井地球化学分析计算得出的烃源岩厚度较为接近，表明岩性横向预测技术用来预测烃源岩是一种科学、可行的研究方法和手段．

This paper predicts source rock bed by applying technology of attribute reconstruction logging constrained seismic inversion, and selecting certain oil-rich sag with high research level in the east of China. According to existing log and logging data, the authors analyze the relationship between the apparent wave impedance and lithology of major objective bed series. Taking the wave impedance inversion profile as means, the spatial distribution of the source rock of this sag, especially the source rock of areas without well and non-penetrated areas is forecasted, by combining original seismic data and geochemical analysis data of source rock. The research results indicate that seismically forecasted thickness is close to the source rock thickness calculated with geochemical analysis of individual well. This indicates that it is a scientific and feasible research method and means to forecast source rock by application of lithology lateral prediction technique.