精细储层预测技术在兴9砾岩体储量复算中的应用

兴9砾岩体位于廊固凹陷西部大兴断层下降盘中北部，具有近物源、窄相带及相变快的沉积特征，出油气层位为沙三下亚段块状砾岩体，而块状砾岩体边界识别难度大、有利储集相带难以预测，严重影响了储量的精确计算。针对上述问题，在对地震数据、地质数据和测井曲线深入分析基础上，应用声波阻抗反演、储层参数反演和叠后地震衰减属性技术，预测了兴9砾岩体储层的空间展布特征和储层内部含油气性分布，精细刻画出有效储层的分布范围，预测结果达到了储量计算所需的精度要求，为储量复算提供了重要参数和依据。

Application of Meticulous Reservoir Predicting Techniques to Xing9 Conglomerate Reserves Recalculation

Xing9 Conglomerate is located in north-central downthrown side of Daxing fault west of Langgu sag, which is characterized by near supply sources, narrow facies zone and rapid facies variation. Oil and gas entry is the clumpy conglomerate in the lower submember of the third member of Shahejie Formation. But the boundary of clumpy conglomerate is difficult to be identified and the favorable reservoir is difficult to be predicted, seriously affecting precise reserves calculation. For the above problems, based on in-depth analysis of seismic data, geologic data and well log, this paper predicted the spatial distribution characteristics of Xing9 Conglomerate reservoir and the oil-gas bearing distribution inside the reservoir, and described the distribution of effective reservoir meticulously, using such techniques as the acoustic impedance inversion technique, the reservoir parameter inversion technique and the pre-stack seismic attenuation attribute technique. The predicting results meet the accuracy requirement, providing important parameters and basis for reserves recalculation.