【摘要】 目的层段的沉积微相研究是认识储层各种物性特征的重要基础。文章以英台地区下白垩统青山口组、泉头组四段Ⅰ砂组为研究对象,确定为扇三角洲相沉积,并划分出六种沉积微相类型。通过引入油藏描述中相控模型的概念,定量地讨论了研究区沉积微相与储层发育程度、储层物性及单层内非均质性的关系。研究表明,水下分支河道、河口砂坝微相的储层物性良好,而席状砂、远砂坝微相的储层物性相对较差,反映沉积微相的变化规律控制着储层物性的变化。更多还原

【Abstract】 <abstract>udying sedimentary microfacies of target strata and members is the important base of knowing all sorts of reservoir physical properties. In this paper, the Qings-hankou formation and sandstone member I of the fourth member of the Quantou formation in Yingtai area Lower Chalk belong to fan delta facies deposit with 6 sedimentary microfacies. Through introducing the concept of the facies-controlled model in reservoir description, relations between sedimentary microfacies and degree of reservoir growing, and between reservoir physical properties and single -zone heterogeneity are quantitatively discussed. Research shows that the reservoir physical properties in submerged branching channel and mouth sand bar microfacies is better, but worse in sand sheet and distal-bar sand microfacies. It indicates that change rule of the sedimentary microfacies controls change of the reservoir physical properties.更多还原