【摘要】 综合考虑岩心、测井等资料,对海安南地区泰一段水下分流河道进行储层构型分析,研究其内部结构对剩余油分布的影响。识别出5级构型界面和2种构型要素,其中河道主体为好的构型要素,河道侧缘为差的构型要素,将构型要素分为3种接触关系:并肩型、切叠型和隔挡型。研究结果表明:构型要素空间接触关系对剩余油分布的影响,剩余油主要分布在差的构型要素内部、好构型要素内部渗流性能差的部位以及构型要素之间相接触部位;不同规模的构型界面对剩余油分布的控制作用,稳定的四级界面使剩余油更易富集在界面以下构型要素的上部区域,而不稳定的三级界面则会使剩余油在界面之上构型要素的下部区域富集。更多还原

【Abstract】 On the basis of lithology and well logging data, architecture analysis was conducted to study the architecture of underwater distributary channel in Member 1 of Taizhou Formation of southern Hai’an area, and how the architectural-element within underwater distributary channel affects the remaining oil distribution. Five rank architectural boundary and two architectural elements were identified. Channel main body was regarded as good architectural-element and channel side body was poor architectural-element. Three types of architectural-element combinations were as follows:side by side type, cutting-piling type and blocking type. The results indicate that architectural- element combinations have effect on the remaining oil distribution. Remaining oil is mainly distributed in poor architectural-element, areas of relatively low permeability within good architectural-element and interface among architectural-elements. The different sizes of architectural boundary can also affect the remaining oil distribution. Remaining oil is mainly distributed in the upper area of architectural-elements in the lower part of stable fourth architectural boundary and the lower area of architectural-elements in the upper part of unstable third architectural boundary.更多还原