直罗油田长8储层宏观非均质性研究

摘要

Based on the analysis of core logging and testing data of Chang 8 reservoir of Zhiluo oilfield, we discussed the reservoir macroscopic heterogeneity characteristics. It showed that the intra-formational, interlayer and plane heterogeneity are stronger in Chang 8 reservoir, with its changing rule mainly controlled by sedimentary facies belt. Intra-formational heterogeneity was mainly influenced by the sedimentary rhythm and sandwich. Interlayer heterogeneity was mainly controlled by the reservoir properties and interlayer. The shape and connectivity of plane heterogeneity were closely linked to the contact relationship of sand body.%通过对直罗油田长8油层组岩心、测井及测试资料统计分析，讨论了研究区长8储层宏观非均质性特征。研究结果表明：本区长8储层的层内、层间、平面非均质性较强，其变化规律主要受沉积相带的控制。层内非均质性主要受沉积韵律，夹层的影响；层间非均质性主要受储层性质和隔层的控制；平面非均质性与砂体的形态和连通性、砂体的接触关系联系紧密。