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以子洲气田山2段储层的测井资料及地质资料为基础,结合沉积相资料,从层内、层间及平面的非均质性三个方面,研究储层的非均质性特征。研究认为,山2段储层内普遍存在隔、夹层,通过对渗透率非均质性参数的研究,认为该储层的主力层山23段层内非均质较强,山2段储层具有较大的分层系数,存在层间隔层,主要为泥质隔层,分布不稳定,具有层间差异性;山2段储层的各小层砂体连通性受沉积微相控制,山23段砂体连续性较好,物性分布稳定,平面非均质性较强。
Based on the well logging data and geological data of the reservoir in the 2nd member of Zizhou Gas Field, combining with the data of sedimentary facies, the heterogeneity of reservoir is studied from the aspects of in-layer, inter-layer and plane heterogeneity . The study shows that there are common intervals and intercalations in the reservoir of Shan 2 Member. Through the study on the heterogeneity of permeability, it is considered that the main strata of this reservoir are heterogeneously heterogeneous, With large delamination coefficient, there are interbedded layers, mainly argillaceous interbeds with unstable distribution and inter-layer variability; the interbedded sand bodies of the second member of the reservoir are controlled by sedimentary microfacies, The sand body of section 23 has good continuity, stable physical distribution and strong plane heterogeneity.