惠民凹陷西部早第三纪沙河街组浊积扇及砂岩体沉积特征研究

惠民凹陷是渤海湾地区新生代断陷盆地之一，其西部地区下第三系发育完整。沙三组中、上段发育大量的浊积扇及典型的浊积岩，后者具深湖相、半深湖相泥岩、油页岩韵律，成因上与三角洲沉积体系的形成、演化关系密切。浊积岩砂体是油气聚集的有利地带，构成了研究区重要的油气储集体。本文阐述了区内沙三组中—上段浊积岩分布、发育样式、形成及演化规律。

Turbidites of Palaeogene Shahejie Formation in Western Huimin Basin of Shengli Oilfield, Shandong Province

Huimin basin is one of the Cenozoic rift basins around Bohai Gulf. Lower Tertiary sediments are well developed in its western part. A variety of turbidity fans or turbidities existent together with deep lake mudstones and oil shales are well developed within the upper or middle part of the 3rd Member of Shahejie Formation related to the evolutionary history of syndepositional deltas. The turbidity sandbodies within Shahejie Formation have great oil-gas potential. This paper studies the distribution, features and evolutionary histroy of turbidity in 3rd Member of Shahejie Formation in western Huimin basin.