前陆盆地冲断带构造分段特征及其对油气成藏的控制作用  

The structural segmentation of foreland thrust belts and its implications for hydrocarbon accumulation in foreland basins in central and western China.

作　　者：宋岩[1] 方世虎[1] 赵孟军[1] 柳少波[1] 

机构地区：[1]中国石油勘探开发研究院

出　　处：《地学前缘》2005年第3期31-38,共8页Earth Science Frontiers

基　　金："十五"国家重点科技攻关资助项目(2004BA616A-04)

摘　　要：以中国中西部典型前陆盆地为例,分析了典型前陆盆地前陆冲断带的构造分段特征,总结构造分段的主控因素主要包括构造动力学背景、调节构造、构造变形期次与构造叠加、滑脱层与构造变形强度的影响等。中国中西部前陆冲断带的油气勘探成果表明,构造分段特征对不同构造段油气成藏具有明显的影响和控制作用,主要表现为:不同构造段的油气富集层位不同;不同构造段的油气成藏时间及成藏期次特征存在差异,主成藏期也不同。By analyzing the features of structural segmentation of foreland thrust belt in central and western China, we conclude that the prevailing controls over the structural segmentation of foreland thrust belts include tectonic settings, transfer tectonics, episodes of tectonic deformation, tectonic superimposition, detachment horizons, and the intensity of tectonic deformation. As proven by petroleum exploration practices, the effects of structural segmentation governing the oil and gas accumulation have two main aspects： （1） hydrocarbon bearing strata are not comparable formation in different structural segments; （2） the times of oil and gas reservoirs and the main period of oil and gas accumulation always vary within different structural segments.

关 键 词：前陆冲断带 构造分段 主控因素 油气成藏 

分 类 号：TE121.2[石油与天然气工程—油气勘探]