东营凹陷是渤海湾含油气区中最重要的含油气凹陷之一 ,其北部紧邻青坨子凸起、陈家庄凸起和滨县凸起为一狭长的陡坡带——北部斜坡带。它北靠盆地边缘凸起 ,南临盆地内生油洼陷。该斜坡带是在早第三纪早期 ,陈家庄凸起构造抬升过程中形成的 ,沙三—四时期 ,在坡角处沉积了很厚的碎屑沉积物 ,成为后来油气聚集的重要场所。研究结果表明 ,该地区沙三—四段沉积的层序地层格架包括三个层序 ,八个准层序组和十八个准层序 ;其中分布冲积扇 ,近岸水下扇和扇三角洲三种成因的砂砾岩体 ,后两者是主要的储油扇体 ;其油藏类型主要有背斜型、上倾尖灭、断块型、岩性透镜体及地层型五种。 Dongying depression is one of the most important oil and gas depressions in the Bohai Bay petroleum-bearing area. Its northern part is adjacent to Qingtuozi bulge. The Chenjiazhuang bulge and Binxian bulge are a narrow steep slope belt - the northern slope belt. It is located on the northern margin of the basin, south of the basin endogenous oil sags. The ramp zone was formed during the tectonic uplift of the Chenjiazhuang uplift in the early Tertiary Period. During the third and fourth quarters of the Shahejie Formation, thick clastic sediments were deposited at the slope angles, becoming an important place for later hydrocarbon accumulation. The results show that the sequence stratigraphic sequence of the sediments in the third to the fourth member of the Tertiary is composed of three sequences, eight quasi-sequence sets and eighteen quasi-sequences. Among them, alluvial fan, nearshore fan and fan The three types of glutenite bodies in the delta and the latter two are the major oil storage fan bodies. The main types of reservoirs are anticline type, updip pinch-out type, fault block type, lithologic lens body and stratigraphic type.