理清储层内对流体渗流有阻碍作用的渗流屏障是油田开发(调整)方案编制的重要基础工作。为研究珠江口盆地A油田珠江组三角洲前缘砂体储层渗流屏障的级次和类型,在对钻井连续取心段、测井小井距连井进行分析,确定研究区沉积微相和沉积演化基础上,按照储层构型理论,采用级次分析方法,结合生产动态综合分析,明确了渗流屏障成因、级次和类型;建立了渗流屏障级次和构型关系模式。研究成果对指导油藏精细挖潜,提升开发效果具有重要作用。

Clarifying the seepage barriers within the reservoir that hinder fluid seepage is a crucial fundamental task for developing(adjusting) plans in oilfields. To investigate the hierarchy and types of seepage barriers in the delta front sand reservoir of the Zhujiang Formation in Oilfield A of the Pearl River Mouth Basin, continuous coring sections of drilling, closely-spaced well logging analysis and well correlation were conducted. Based on established sedimentary microfacies and sedimentary evolution of the study area, adhering to the reservoir architecture theory, a hierarchical analysis method combined with comprehensive production dynamic analysis was employed to elucidate the causes, hierarchy, and types of seepage barriers. Furthermore, the relationship model between the hierarchy of seepage barriers and reservoir structure was developed. The research results play a significant role in guiding the precise tapping of oil reservoirs potential and improving the development effect.