【摘要】 成藏动力系统是油气在多种动力学机制作用下从源岩到圈闭所经过的路线。西湖凹陷是东海盆地主要的油气勘探区域,具有良好的油气勘探远景。基于钻井、地震及相关分析化验资料,在描述流体动力场(包括地温场、压力场)特征的基础上,探讨西湖凹陷油气成藏动力系统的特征。根据东海西湖凹陷构造、沉积演化特征,烃源岩特征以及异常孔隙流体压力的分布特征,运用成藏动力系统划分的方法进行分析,认为研究区自下而上分为4个成藏动力系统。研究结果在油气勘探开发方面具有指导意义。更多还原

【Abstract】 Migration-accumulation dynamic system refers to the fairway from source rock to trap under the actions of multiple dynamic mechanisms.Xihu depression as a major oil and gas exploration area in East China Sea Basin has a promising exploration prospect.The characteristics of migration-accumulation dynamic system in the Xihu depression is discussed based on drilling,seismic and relevant analysis data and the description of fluid dynamic field(including geotemperature field and pressure field).The study area has been divided into four migration-accumulation dynamic systems from below according to the characteristics of structural and sedimentary evolution,source rock,and abnormal pore fluid pressure distribution in the Xihu depression of East China Sea.This study will be instructive to further oil and gas exploration.更多还原