Geological Model Of Shanxi Gas Reservoir In Yanchang Gas Field,Ordos Basin

According to the basic laws of the Ordos Basin,it is generally known that the geology of the area should be the eastern high-low sedimentary facies,the study area Upper Paleozoic Shanxi The group can be divided into two small layers of shan1 and 2,and the natural gas can be seen in all parts.In order to provide a comprehensive and in-depth understanding of the reservoir geologic characteristics of the Shanxi Formation in the study area,it provides a solid geological basis for the next exploration and development and the improvement of the gas recovery.The sedimentary,tectonic geology,petroleum geology and logging Geology,mathematics and geostatistics of the latest results for the theoretical basis of modern computer technology and geological modeling software as a means of comprehensive drilling,logging,logging,test oil and other dynamic and static data,a variety of analytical tests and Stratigraphic test data,the geological model of Shanxi reservoir in Yanchang gas field was studied.According to the principle of formation comparison,through the analysis of the logging facies,the gas group in the Shanxi section of the Shanxi Formation is divided into three groups: the sandstone and the estuarine dam of the delta front.The diversion channel sand body is the main reservoir.Sandstone is mainly composed of quartz sandstone,lithic quartz sandstone and lithic sandstone.The sandstone is characterized by low porosity and low permeability,and the sandstone is characterized by low porosity and low permeability.The main features of Shanxi gas reservoir are widely distributed hydrocarbon generation,diffuse filling,close migration,lithologic aggregation,large area accumulation and quasi-continuous distribution.Finally,based on the comprehensive geological research,the petrel software was used to establish the geological model of the tectonics,sedimentary facies and reservoir properties of the target layer in the study area by phased modeling and interpolation modeling,and verified its rationality The The results show that the model established under phase control is in good agreement with the geological knowledge.Which can provide the geological basis for the compilation of reasonable development plan and the next step reservoir numerical simulation.