Study On Detection Method Of Fluid Factor In Sulige Tight Gas Reservoir

The study of tight gas reservoirs is of great significance for the exploitation of natural gas.Due to the heterogeneity of tight gas reservoirs,conventional seismic fluid detection techniques cannot meet the requirements of oil and gas exploration.Multidisciplinary,multi-method and technology integration is needed,and relevant theoretical and methodological innovation research is carried out for specific research objectives.Based on the theory of rock physics,this paper firstly conducts model test analysis for different rock physics models and obtains theoretical methods to support it.The intrinsic relationship between physical properties of lithologic reservoirs,lithology and saturation and rock elastic modulus is mainly discussed.Analyze the construction ideas of existing fluid factors,and combine various data to analyze and discuss the recognition ability of various fluid factors.Based on the actual work area data,a rock physics model suitable for the work area is constructed for the rock physics characteristics of the Sulige tight gas reservoir.Based on the rock physics model,the shear wave velocity prediction of the logging data in the study area and the diagnostic analysis of the logging data were performed.The effect of the fluid factors discussed and analyzed in the previous core on the actual core data and logging data was verified.Finally,the validity of the fluid factor is further verified by the parameter information obtained by the seismic data prestack inversion technique.The results show that the newly constructed fluid factor detection method can be applied to the actual work area of the Sulige tight gas reservoir.