东濮凹陷西洼北部沉积体系与含油气性

Depressional System and Hydrocarbon Potential of Northern Area of Western Subdepression of Dongpu Depression

柳屯—海通集洼陷是东濮凹陷继承性发育的生油气洼陷之一 ,沉积了巨厚的下第三系地层 ,油气资源丰富 ,具有多种类型的沉积体系和组合类型。该区多年勘探主要立足于洼陷周围的文留、刘庄、胡状集、庆祖集等主体构造 ,洼陷内仅发现局部出油气点。通过对该区沉积、构造演化史研究 ,并结合钻井、测井、地震等资料 ,认为下第三系主要发育扇三角洲—浊流沉积体系、水下扇—盐湖沉积体系、冲积扇—季节湖沉积体系、三角洲前缘—半深湖及河流相沉积体系 ,其中以扇三角洲—浊流沉积体系、水下扇—盐湖沉积体系含油气性最佳。随着油田深化勘探及深层勘探技术的发展 ,进一步研究、总结柳屯—海通集洼陷内油气分布与沉积体系的关系及其分布规律 ,并与圈闭分析相结合 ,对提高该区油气勘探效益 ,均具有一定的指导意义。

Liutun Haitongji subdepression is one of the inherited oil and gas generating sub depressions in Dongpu Depression It occurs huge Palaeogene system with rich oil and gas resources The depositional system and assemblage type are various, among which fan delta and of semi deep lacustrine deep lacustrine have the best hydrocarbon Potential with the intensification of exploration in existing oilfield and the development of exploration technologies for deep straum, further researching and summing up of the depositional system and its distribution combined with trap analysis will be guide to the oil and gas exploration