Abstract：Yingtai area of Jilin oilfield is a typical fluvial deposit,it has the characters of thin reservoir and minor structural amplitude.Therefore,the minor fault has big influence on structural attitude and oil-water relation.Through application of fault interpretation techniques such as coherent data volume with predominant Frequency band,dip,azimuth and fault edge,the paper not only basically solved the contradiction between conventionally interpreted results and oil-water relation revealed by real drilling results that puzzled the oilfield development,but also discovered and defined a group of structures with low amplitude related to minor faults,provided basic data for increasing production and reserve and revising development plan.
