东营凹陷北带转换带构造与储集体分布

东营凹陷北部陡坡带的滨南一利津断裂系统和胜坨一永北断裂系统在坨深1井附近交会，二者间发育由一系列小断层组成的构造转换带。转换带小断层的走向与主断裂系统有一定夹角，受转换带控制的沉积、沉降中心相对远离小断层的断层面，成为湖盆边缘的相对缓坡，是断陷期水系入湖的主要通道。粗碎屑扇三角洲砂体的发育被限制在转换带小断层的上盘和挠曲坡折带范围，单层厚度大，分布范围广，扇体可延伸到断陷湖盆深处的深湖相烃源岩中，有利于形成岩性油气藏和复式油气藏。图5参16

Transfer zone and its relative reservoir distri-bution in northern zone of Dongying Sag

Two sets faults developed in the northern zone of Dongying Sag, between which transfer zones occur act as displacement transfer. Transfer zone is one of the important components developed in northern zone of Dongying Sag, which is characterized by a series of faults with small displacement. Its strike has a little difference with that of the main faults systems. Significant difference characteristics exist between transfer zone and its surroundings. Subsidence center is far from the faults. Ramps are the typical feature of transfer zone and this physiography is the favor area for drainage flowing to basin. Sand body that restrained by transfer zone is characterized by large thickness and range. Lithologic reservoir and complex reservoir are the main potential types in the study area.