Existing volumetric methods are often constrained by limited information when projects are in the early stages of development. The objective of this study was to estimate the potential of the geothermal field using a finetuned geological model and a 3D digital temperature model. We establish a good geological model of a geothermal field in southern China and thus compute a 3D conductive numerical temperature model. Based on comprehensive analysis and interpretation of the measured drilling and borehole data, regional variation and spatial distribution of thermal and physical properties are both incorporated into the geological model. The results show that the Neogene and Quaternary strata in the study area have an average porosity of 36% and the average thermal conductivity of rocks is 3.15 WmK−1, the Weizhou formation has porosity. with an average temperature of 29% and an average rock temperature of 2.54 WmK−1, the Liushagang Formation has an average porosity of 22% and an average hermal conductivity of 2.21 WmK−1, the Changliu Formation has an average porosity of 13% and an average temperature conductivity of 2.75 WmK−1. Based on the fine geothermal geothermal model, heat is assumed to be conduction, and the results show that the bottom temperature of the Weizhou Formation in the hydrothermal sandstone reservoir is 96168 degrees Celsius, and the high temperature is concentrated. near the tipping point. fault surface, showing that geothermal resources are favorable regions and geothermal energy is 7.89*1014 J.
