Facies Controlled Reservoir Modeling Of F,Y Oil Layers In Shu 8 Block,Daqing Yushulin Oilfield

The main purpose layers of block 8 Yushulin oilfield are Fuyu and Yangdachengzi reservoir,which are located in K1q3 and K1q4.The major problem of restricting the potential of residual oil are the plane distribution of reservoir,the understanding of sedimentary microfacies and the physical distribution properties.In order to solve these problems,it is of great significance to establish a fine reservoir model.Therefore,in this paper,by using the data of core,well logging,seismic and so on,this paper makes a study on the facies controlled reservoir modeling by using the stochastic simulation technique for the Fuyu oil layer and the Yangdachengzi formation.Firstly,based on the core,logging and seismic data,establishes a fine isochronous stratigraphic framework.On this basis,studies the sedimentary microfacies plane distribution properties of each sedimentary unit of Fuyang reservoir deeply,getting the sedimentary environment is a meandering river-shallow water delta sedimentary system,since Yang Dachengzi to Fuyu reservoir transformation order: meandering river facies?delta plain facies?delta front subfacies?delta plain facies?delta front subfacies,the overall positive cycle.Then,using the combination of well and seismic method in 3D seismic data in the study area of fine description of structural form,clarify the small faults.The tectonic form for the overall performance of “from north to south,from east to west,the terrain increased”,and the faults and fracture characteristics of good inheritance,to provide accurate information for reasonable structure reservoir model.Finally,the comprehensive application of plane sedimentary microfacies and seismic interpretation results,establishes 6 reservoir top structure models and 75 time unit phase models.The sedimentary microfacies as constraints,using sequential Gauss simulation method of porosity and permeability data of stochastic modeling,established the reservoir model of the study area.That can guide the Fuyang oil layers of distribution,connectivity and vertical to further understand the relationship,and provide a reliable basis for the exploration and development of oil next.