砂泥互层地层断裂带结构特征及控油作用

发布时间：2018-07-23 13:34

【摘要】：通过露头区解剖、三维地震解释、测井曲线识别、岩心观察和薄片鉴定,对松辽盆地杏北油田葡萄花油层砂泥互层地层断裂带内部结构特征进行研究;建立基于测井曲线综合响应的断层破碎带厚度预测模型,进而探讨断裂带结构特征对断层边部剩余油富集和开采的控制作用。结果表明:断裂带由断层核和破碎带两部分组成,其中断层核发育泥岩涂抹的分段生长结构,破碎带发育破碎、滑动和变形3种特征;断层垂向上在葡Ⅰ4小层发生分段,造成系统取心井钻遇3个断点,其中断点1发育砂岩变形带的断层端部破碎带,断点2发育泥岩涂抹的主断层核,断点3发育泥质角砾岩和方解石充填泥岩裂缝的次断层核;断层面两侧随着距断层核距离增加破碎带微构造密度和碳酸盐含量逐渐降低。
[Abstract]:Based on the anatomy of outcrop area, 3D seismic interpretation, logging curve identification, core observation and thin section identification, the internal structural characteristics of sandstone and mud interlayer fault zone in Putaohua reservoir of Songliao Basin are studied. A prediction model of fault fracture zone thickness based on comprehensive response of logging curves is established, and the control effect of fault zone structure on residual oil enrichment and recovery at fault edge is discussed. The results show that the fault zone is composed of two parts: fault nucleus and fracture zone, in which the fault nucleus develops the segmental growth structure of mudstone smear, the fracture zone develops fragmentation, sliding and deformation, and the fault is divided vertically in the Portuguese 鈪，

本文编号：2139572