横向断层及其控油气作用Transverse Fault and Its Control on Hydrocarbon Accumulation
蔡俊;吕修祥;李博媛;
摘要(Abstract):
尽管横向断层目前已经显示出重要的控矿作用,其重要作用也已在油气地质中有所体现,但油气地质学家对此却缺乏足够的重视。鉴于此,基于国内外大量文献调研,结合大量实际工作,系统总结了横向断层的特征,介绍了横向断层的识别方法,并以塔里木盆地为例探讨了横向断层对油气的控制作用。研究结果表明:在造山带(露头区),横向断层的识别方法主要包括野外地质填图、遥感及重磁异常解译,其活动性质可结合地震机制解进行判断;而在沉积盆地(覆盖区),主要利用三维地震属性分析技术。此外横向断层在石油地质中的作用表现为:1横向断层切割主构造带,导致了含油气盆地平面分块;2横向断层对储层进行改造,包括物理改造和化学改造作用;3横向断层形成了一系列烃类充注点,作为烃类的垂向运移通道,而烃类侧向优势运移路径可能平行于各个断块的锐角平分线。
关键词(KeyWords): 横向断层;控油气作用;烃类充注点;优势运移路径;塔里木盆地
基金项目(Foundation): 国家重点基础研究发展规划(“973”)项目(2012CB214804);; 国家自然科学基金项目(41372146)
作者(Author): 蔡俊;吕修祥;李博媛;
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DOI:
参考文献(References):
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