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夹层束缚了油水在储层中渗流,是控制剩余油形成与分布的主要因素之一。该文以济阳坳陷馆陶组上段河流相储层为例,总结了泥质夹层、钙质夹层和泥质砾岩夹层3类夹层的岩性、电性特征,建立了各类夹层的识别标准,其夹层的物性特征明显(渗透率为(50~100)×10-3μm2,孔隙度为15%~20%)。沉积作用控制了夹层发育,河流相储层的夹层主要是沿着3~4级层序界面发育。运用韵律层对比、物性截断和条件模拟的方法能够预测夹层的分布,探讨了夹层对剩余油的控制作用。
Mezzanine constraining oil and water seepage in the reservoir is one of the main factors that control the formation and distribution of residual oil. Taking the fluvial facies reservoir in the upper part of Guantao Formation in Jiyang Depression for example, the paper summarizes the lithologic and electrical characteristics of three kinds of intercalation of muddy intercalations, calcareous interbeds and argillaceous conglomerates, Identification criteria, the physical properties of the sandwich obvious (permeability (50 ~ 100) × 10-3μm2, porosity of 15% to 20%). The sedimentation controls the development of the interlayer. The interbed of the fluvial facies is mainly developed along the 3rd - 4th order boundaries. By using prosodic layer contrast, physical property truncation and conditional simulation method, the distribution of interlayer can be predicted and the control effect of interlayer on remaining oil is discussed.