Abstract: The EMI image logging is a new logging technique which is gradually developed at the end of the 20th centu- ry.In the lower Urho formation in the 8th area of Kara- may oilfield,the new technique has been applied to 15 wells.Based on further analysis of the image logging data and combined with conventional logging data and seismic data,the lithology,sedimentary structure,sedimentary microfacies,sedimentary evolution,provenance of the ar- ea have been further studied.The results indicate that this technology provided a important measure for sedimentary facies,it can apply to lithology analyse,sedimentary structure distinguish,formation lithology facies fine di- vide,paleorivers direction definite,sedimentary microfa- cies explain and so on.