Study On Internal Architecture Of Typical Ingle Sands And Model Research In The East Of The Fault Block In Beiyi District

The development degree of the east of the fault block in Beiyi district of Daqing oilfieldis too high, it has come into high water-cut stage of development.In this stage,the key of tap-ping the remaining oil and enhancing oil recovery is to master underground geologic condi-tions of reservoir,especially internal architecture of single sand body and its influence oncharacteristics of seepage flow.Only in this way,we can study the distribution laws of the re-maining oil better and provide scientific and rational theory for searching and tapping the re-maining oil.In this paper,it adopts sequence stratigraphy and reservoir sedimentology to research thestratigraphic classification of the study area,and to finish the strata correlation of key timeunits.Subdivision of sedimentary system into subfacies and microfacies has been done,andlogging microfacies patterns has been set up.By using the sedimentary theory,andcore,logging data of study area,it establishes sedimentary microfacies analysis and description.Because the anatomy of the sedimentary microfacies can not meet the needs of the fine geo-logic study,it needs further analyse architecture of single sand body,in order to guide the re-leasing remaining oil in high water-cut stage.On the above basis,this thesis optimizes singlesand boddies of different types,including meandering river of flood plain,distributary channelof delta plain,and underwater distributary channel of delta front.Through extracting the relatedparameters of architecture anatomy,and using the channel sand body architecture model thatmodern sedimentary and ancient outcrop data has reached,it establishs internal architecturemodel of the typical single sand body of study area.And it researches the impact that internalarchitecture makes on internal characteristics of seepage flow of single sand body.This studyprovids a theoretical guidance for better tapping the remaining oil,and developping channelsand body more fully.