Reservoir Prediction And Study Of Three-dimensional Geologic Modeling Of Fuyu Formation In AoNan Area

The Fuyu Formation of Ao Nan reservoir in southern Daqing placanticline is characterized by many sandstone layers,thin single layer thickness,large difference among layers,sand body continuity bad,poor continuity between layers,and strong heterogeneity in the layers.The channel sand bodies in the Fuyu Formation are mainly banded.The sand body in transverse direction change Fast,the superposed joint,and the sand body is thin It is difficult to predict reservoir by conventional method,because the relationship between sand body and single seismic attribute is rather complicated.The previous technical ideas only through well contrast,macro grasp the distribution characteristics of sedimentary facie belt,cannot predictable nor meet the actual production demand.This paper studies the combination of modeling and deposition in the exploration area for the first time,and fully integrates well seismic data in this area.Sandstone prediction is made by using multiple seismic attributes,inversion and reservoir models.Establishing porosity,permeability,sandstone thickness and other physical property models.With the well seismic data,we draw the plane sedimentary facie map of Fuyu formation in the study area.Combine the modeling with the sedimentary facie map,and use the sequential indicator simulation method to model the sedimentary facie.The study proved that,the structural form in the area of Ao Nan is a slowly uplifting slope from the northwest to the Southeast,most of the faults developed northward and west direction and almost north-south direction.The reservoir sandstone is mainly developed in the middle of the the area,and the sandstone of F?2-1 and the F?2-2 reservoir are mostly developed.From the plane,the average porosity in the middle of the area is more developed than the East and the West.The average porosity of the F?1-1 and the F?1-3 reservoir is striped distribution.The results of this study show the distribution and scale of the channel sand body clearly from the three-dimensional angle,confirm the oiliness of reservoirs,and provide support for reservoir geological modeling.The research results of this paper are applied to the deployment of well position,which has achieved good results and is of great significance for increasing production and expansion in oil field production.