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非常规储集层是指砂岩和碳酸盐岩以外具有特殊储集性能的储集层 ,它们具有非均质性强、储集空间复杂、控制因素多等特点 ,导致储集层的地球物理特征变弱 ,使传统的利用波阻抗反演进行储集层横向预测的方法失效。针对这一问题 ,该文提出了一种以地质、测井、地震综合研究为基础的储集层横向预测技术 ,其步骤是在多学科资料综合分析的基础上 ,利用储集层地球物理特征重构技术 ,突出储集层特征 ,增强储集层在纵向上的可识别性 ;然后利用储集层特征反演将可识别的储集层特征外推到井点之外 ,形成储集层地球物理特征反演数据体 ,进行储集层横向预测。该方法在茫崖凹陷砂西泥岩裂缝性油藏、惠民凹陷商 741区块侵入岩裂缝性油藏描述与评价 ,以及风化店枣 43井区蚀变带储集层预测中取得了良好的效果 ,其预测结果与钻井结果相一致 ,证实了该方法的可行性 ,它较大地提高了利用地震资料进行非常规储集层描述的能力。
Unconventional reservoirs are reservoirs with special reservoir properties outside of sandstone and carbonate rocks. They have the characteristics of high heterogeneity, complex reservoir space and many control factors, leading to the development of geophysics The feature is weakened, which makes the traditional method of inversion of wave impedance inversion to reservoir lateral prediction failure. In response to this problem, this paper presents a reservoir lateral prediction technology based on the comprehensive study of geology, logging and seismic. Based on the comprehensive analysis of multidisciplinary data, the paper makes use of reservoir geophysical characteristics Reconstruction techniques to highlight the characteristics of the reservoir and enhance the vertical identification of the reservoir. Then, using the reservoir characteristic inversion, the identifiable reservoir characteristics are extrapolated from the well point to form a reservoir Geophysical characteristics of the inversion data body for reservoir lateral prediction. This method has been successfully applied in the prediction and evaluation of fractured reservoirs of Shaxi mudstone fractured reservoirs and commercial 741 block of Huimin sag and the prediction of alteration zone reservoirs in Weizhou 43 well. The results, which are consistent with the drilling results, confirm the feasibility of this method and greatly enhance the ability of using seismic data to describe unconventional reservoirs.