中文摘要：

隐蔽油气藏勘探要以高分辨率地震资料为基础,以层序地层学理论为指导,结合测井和沉积学综合研究.本文讨论了层序地层学在陆相湖盆隐蔽油气藏勘探中的的理论基础和工作方法,并将其应用于海拉尔盆地乌尔逊凹陷北部大磨拐河组隐蔽油气藏识别中,指出大磨拐河组为一套完整的二级层序,由低水位体系域、水进体系域和高水位体系域组成,其中低水位体系域发育的湖底扇和斜坡带发育的岩性上倾尖灭砂体为研究区主要的隐蔽油气藏类型.

英文摘要：

The study of subtle Traps based on the high-resolution seismic data is a focused subject in hydrocarbon exploration.Based on the theory of sequence stratigraphy,and comprehensive using of the logging and sedimentology,the favorable parts can be identified.This paper deals with the theoretical basis and working process of sequence stratigraphy and has applied it to the rift lacustrine basin to find the subtle traps of Damoguaihe Formation in the north of the Wuerxun depression in the Hailaer Basin.The formation of interest is a whole second-order sequence and consists of low stand system tracts（LST）,transgressive system tracts（TST）and highstand system tracts（HST）.It is suggested that the main reservoir is sublacustrine fan developed in the flowstand system tracts （LST）and the lithology updip pinchout reservoir developed in the slope break zones.