【摘要】 震浊积岩是陆相断陷湖盆中常见的一种油气储集体。通过室内水槽实验模拟地震浊积岩体的形成过程,认为在地震作用下,三角洲前缘发生两种类型的滑塌,可形成3种类型的震浊积岩体:液化浊积体、二级滑塌浊积体、次生叠置浊积体。它们在三角洲前方广泛发育,垂向上相互叠置、平面上成带出现。其中二级滑塌浊积体发育在底形坡折以下的深洼陷内,可形成断陷盆地内最为有利的一类隐蔽油气藏。控制地震浊积岩体分布的因素主要包括三角洲前缘的沉积特征、地震作用的强度、三角洲前缘沉积底形等。更多还原

【Abstract】 Seismo-turbidite is a common kind of petroliferous reservoir in the continental rift lacustrine basin. According to the flume experiment, the forming process of seismo-turbidite is simulated. The results show that there are two kinds of slumping in delta front under seism and three kinds of seismo-turbidites: liquefied turbidites, secondary slumping turbidites and secondary overlapped turbidites can be formed. They are widely developed in delta front, and they usually overlap vertically and occur in belts regionally. The secondary slumping turbidites are mainly developed in the deep sag below the bed form break and can form one of the most favorable subtle petroleum reservoirs in the rift lacustrine basin. The factors controlling the distribution of seismo-turbidites mainly include the sedimentary characteristics of delta front, the intensity of seism and the depositional bed form of delta front.更多还原