孤东油田七区西N1g16心滩坝构型分析与定量表征

Configuration Analysis and Quantitative Characterization of West N1g16 Core Beach Dam in Area 7 of Gudong Oilfield

辫状河复合河道砂体主要是辫状河道和心滩坝,辫状河砂体内部的非均质性主要是由于心滩坝内部落淤层的存在。在综合识别砂厚、砂顶相对深度和垂向层序差异等特点,在复合河道砂体内部划分出单一心滩坝,以此为基础,在"层次分析、模式拟合"思路指导下,结合研究区地质特征和落淤层分布,在模式拟合的基础上得到心滩坝内部构型模式,定量刻画了心滩坝内部构型要素。

Braided channel sand bodies are mainly braided channel and heart beach bar,and the internal heterogeneity of braided river sand bodies is mainly due to the existence of deposition layer inside the heart beach bar.Based on the comprehensive recognition of the characteristics of sand thickness,relative depth of sand top and vertical sequence difference,a single core beach dam is divided in the sand body of composite channel.On this basis,under the guidance of the idea of 'hierarchical analysis and model fitting',combined with the geological characteristics of the study area and the distribution of deposition layer,the internal configuration model of the core beach dam is obtained on the basis of model fitting,and the inner structure of the core beach dam is quantitatively depicted.Configuration elements.