Research on reservoir depositional character by Logging Facies Analysis

Divide the sedimentary sequence boundaries and detect the sedimentary microfacies accurately are the basis of reservoir evaluate and predict.We can get sufficiently sedimentary information by analysis the well logging data,and then we can reestablish the sedimentary environment.In this article,the author expounds the methods and thinks to study reservoir sedimentary characteristics which based on logging facies analysis.Take south area of Songliao Basin as the case,the author analysis different sedimentary microfacies' features of delta front sedimentary facie environment.Logging curves' three factors,which are scope,shape and top and bottom contact relationship,are used to establish all kinds of suitable sedimentary microfacie models.It is providing the base for study of plane depositional microfacies and the sand body distribution on each single layer.