鄂尔多斯盆地长7储层宏观非均质性研究

鄂尔多斯盆地XX油田长7储层为三角洲沉积体系中的三角洲前缘亚相沉积,沉积相控制储层物性及非均质性。为了揭示长7储层宏观非均质性,本文运用统计学方法对区内储层层内韵律性、层间差异性和平面上砂体连续性进行研究,认为鄂尔多斯盆地XX油田长7层段平面非均质性较强,层间非均质性较强,层内非均质性以强非均质性为主。

Study on Macro Heterogeneity of Chang 7 Formation in Ordos Basin

Chang 7 reservoir in certain oilfield of Ordos basin is the delta front sub-facies sedimentary that belongs to delta sedimentary system in which the sedimentary facies control physical property and heterogeneity of reservoir.In order to reveal the macroscopic heterogeneity of the reservoir,the statistical method was used to study internal rhythmicity,interlayer differences,sandbody continuity in plane of the reservoir in this paper.The results show that the reservoir has well plane heterogeneity,interbedded heterogeneity and inlayer heterogeneity.