【摘要】 分流河道砂体是临南油田重要的勘探开发目标,可分为水上和水下2种类型。运用正演模拟、地质统计、地震相分析等技术手段,分析了分流河道砂体的地震反射特征,划分了三角洲平原亚相和前缘亚相的分布范围,总结了分流河道砂体的分布规律。研究表明:临南地区水下分流河道砂体主要发育在三角洲前缘亚相,其地震反射特征为连续性相对较好的中—强反射,厚度中心在街3井—夏53井之间;水上分流河道砂体发育在三角洲平原亚相,地震反射特征为短轴状—杂乱反射,中—弱振幅,连续性差—中等,尖灭点不易分辨识别,主要分布在街3井以南的地区。更多还原

【Abstract】 Distributary channel sandybodies are the important objects for exploration and development in Linnan Oilfield,which can be di-vided into above water and under water two types. Forward mod-eling,geologic statistics and seismic facies analysis methods were applied to analyzing the seismic reflection characteristics of the distributary channel sandybodies and identifying the distribution range of delta plain and front delta intrafacies. Distribution rules of the distributary channel sandybodies were realized. The under-water sandbodies distribute mainly at the front delta intrafacies,and its seismic reflection is relatively continuous and medium -strong degree. The centre of the deposit is between J3 and X53 wells. The sandbodies above water mainly distribute at delta plain intrafacies with short and disarray seismic reflection,medi-um-weak amplitude and weak-medium continuity. It is difficult to identify the pitchout,which distributes mainly at south to Jie3 well.更多还原