济阳坳陷滩海地区曲流河沉积结构特征及储层描述研究

Research on the Characteristics and description of Meandering River Sedimentary Architectural Elements

储层非均质性是影响河流相储层油气分布的主要因素。细分储层沉积结构单元方法是河流相储层非均质性研究的有效方法。但是,河流相储层的沉积、保存又存在其特殊性,这使得河流相沉积结构单元的野外露头识别、单井识别是可行的,但不同沉积结构单元的平面识别、预测难度较大。本文以曲流河沉积特殊性分析为基础,划分了沉积层次,总结了不同沉积结构单元的特征。总结出应综合运用丰富的测井、钻井、地震资料,同时结合曲流河的沉积、保存特征进行识别和描述。

The reservoir heterogeneity is the primary influential factor in fluvial reservoir hydrocarbon distribution, and dissection of reservoir sedimentary architectural elements is a potent research method. Though the identification of the field outcrop and single well of fluvial sedimentary architectural elements is relatively easy because of the particularity of meandering river sedimentation and preservation, the plane identification of different sedimentary architectural elements is difficult. Based on analyzing on the particu- larity of meandering river sediment, the layers of meandering river sediment were parted, and ＂the charac- teristics of different sedimentary architectural elements were summarized. During the plane description, the identification and description should be based on integrated applying abundant well logging and drilling data with the characteristics of meandering river sedimentation and preservation.