A Study On Fine Geological Modeling With Log And Seismic Data In Eastwards XingⅩ Pure Oil Zone

XingⅩpure oil zone is located in the central part of Xingnan developing area, whose structure position lies in the southern part of Xingshugang anticline of Daqing placanticline in the central depression of Songliao basin.In this essay, the methods of modeling are optimized by using the sedimentary facies graphs, the vertical proportion functions of logging sandbodies, and the seismic inversion result, by use of which the lithology model is established and subsequently the model of porosity, permeability and saturation of the reservoir is established as well. The ultimate reservoir model is optimized through reserves calculation. Finally, the fine geologic model is used for numerical simulation.In the course of study, the three key techniques are employed: the establishment of local structure model technology, combined with seismic microfacies modeling and lithology constrained reservoir porosity, permeability and saturation modeling technology, with the help of which the following six conclusions are drawn: the fine structure interpretation is completed, and the fault model classified into units is established, and sedimentary microfacies model subject to the logging facies data, seismic inversion data and sedimentary facies is formed, and the models of porosity, permeability and saturation based on logging physical data, normal transformation and the variogram analysis are set up, and reserve calculation is completed by means of volumetric method to optimize the structure model by building up model fitting reserve cumulative distribution function(CDF) model, and reservoir physical model of coarsening is accomplished, the output of the model can be applied after the analog output.This study will further improve the accuracy of reservoir prediction, with 3D reservoir geological model established for quantitative characterization, and satisfy the development requirements of hydrocarbon exploration.