研究区地处陕北斜坡中部,延9油层是其重要的含油层系之一,属曲流河相。本文充分运用岩心、录井和测井等资料,对其储层非均质性进行研究。研究区延9油层组层内非均质性较强,层间非均质性和平面非均质性较弱,沉积微相是影响储层非均质性的主要原因。 The study area is located in the middle part of northern Shaanxi slope. The Yan 9 reservoir is one of the important oil-bearing strata and belongs to meandering river facies. This paper makes full use of core, logging and logging data to study the reservoir heterogeneity. The in-reservoir anisotropy of Yan 9 reservoir in the study area is strong, and interlayer heterogeneity and plane heterogeneity are weak. Sedimentary microfacies are the main reason for reservoir heterogeneity.