摘要
永安镇油田位于济阳坳陷东营凹陷东北部近盆缘部位，属中—高开发区复杂断块油田。受断裂带内三条大断层的切割，该油田呈现由盆缘向盆内依次下掉的四个台阶带。这一主体构造形式控制了永安镇油田的油气的差异运聚与油气分布规律。区内储层为沙河街组沙二段—沙三上段的河流－三角洲相砂体。该区三角洲的发育可分为三个大的时期，三角洲相相带的发育迁移控制着该油田油气分布的层位，沉积微相的类型决定着油气藏的静态特征与动态变化规律。
オhe Yong'anzhen oil field,located on the northeastern margin of the Dongying depression,Shandong is ascribed to a complicated faultblock oil field in a medium to highgrade exploitation area.The oil field is dissected by three major faults,and aligned,from the margin to centre of the basin,into four step zones.The overall structural patterns have controlled the differential accumulation and distribution of oil and gas in the Yong'anzhen oil field.The reservoirs in the study area consist of the fluvialdeltaic sandstone bodies in the second member and upper part of the third member of the Shahejie Formation.Three main stages have been distinguished for the delta development.The oil and gas distribution in the oil field is governed by the development and migration of the delta facies belt,and the static and dynamic regimes of oil and gas accumulation are determined by the types of sedimentary microfacies.
关键词
油田
构造特征
沉积微相
油气藏特征
oil field,structural features,sedimentary microfacies,oil and gas accumulation
