Study On The Fine 3D Geological Modeling Method In The Su Southeast Area

At present,the reservoir fine modeling technology has been widely used in the geological understanding of the reservoir in the Su southeast area.However,due to the complex geological features,there is still a great difference between geological features of gas reservoir and actual gas reservoir.Further research is needed to study the geological modeling of the Su southeast area.First,The sedimentary stratigraphic framework was reviewed,and the uniform formation sequence framework was established,according to different sedimentary facies marks,the sedimentary environment of each group was identified,sedimentary microfacies types were divided,typical single well facies analysis was carried out,the target block logging facies model was established,the sedimentary microfacies of each small layer were compiled,the geological understanding of the target block was deepened.Secondly,according to Su southeast region geology characteristic and existing geological research results,deterministic modeling and sequential indicator simulation method were used to establish the model of reservoir sedimentary facies in the Su southeast area.The comparison shows that the stochastic modeling method is more suitable for the reservoir modeling of the target area;exponential model,spherical model and Gauss model were used to establish the porosity model of He8down2,and the spherical model was more suitable for the geological modeling;8 sets of porosity model was established by eight kinds of modeling methods for He8down2,a combination of “error analysis” and “thinning modeling method” found out that the sequential Gaussian simulation method was more suitable for reservoir parameter modeling.According to the adaptability of different modeling methods,a set of modeling method was proposed for the Su southeast area.Finally,according to the set of modeling method,a cluster of equal probability models of porosity,permeability and saturation properties were established,the geological model was selected to meet the geological features of the Su southeast area,and the accuracy of the model was tested by several methodsThrough adaptability analysis of 3D fine geologic modeling method on target block,it has formed a set of geological modeling research methods the Su southeast area,which lays a solid foundation for reservoir engineering and numerical simulation research in the study area.