目前的物源方法一般局限在地质与地球化学方法上,如重矿物分析法、碎屑岩类分析法、同位素法、裂变径迹法等等.但这些方法存在较大的局限性,它们只能反映井上及井周围地层的物质特征.对于一个井少且井分布不均匀的地区,这些方法就不能准确判断物源方向或无法判断物源方向.地球物理方法在这种情况下就占据一定的优势,因为该方法得到的横向上的地层信息较连续.主要概述了如何利用地球物理方法中地震相、反演、地震属性分析方法来判断物源方向,并结合实例使用地震属性中的频谱分解方法分析某工区的物源方向.

In recent years,the studies of volcanic reservoirs have become a new field of hydrocarbon exploration.It makes reservoir prediction difficult that lithology of the volcanics are quite different,genesis is complex and its lithology classifications are not the same.This paper firstly analyzes volcanic rocks of Wellblock Ke 81 well in the Permian Fengcheng Formation by its well logs and geological data.Secondly horizontal distribution is confined through the seismic profile.Finally volcanic trap of Wellblock Ke 81 is identified successfully by seismic attribute analysis.The results show that there are favorable conditions for volcanic trap formation of Wellblock Ke 81 well,and total absolute value and waveform assortment(6 class) along layer show that volcanic trap of Wellblock Ke 81 is reliable.