A method for improving anisotropic numerical simulation accuracy of sandstone geothermal reservoirs
In order to ensure the sustainable and stable development of the geothermal field in Block Shen 260 with reasonable mining and irrigation methods,a three-dimensional fine geological model including such data as structure,lithology,porosity,permeability,temperature and pressure was established using Petrel software.On this basis,the production performances of seven single wells were historically matched using CMG software to obtain the evolution laws of temperature and pressure fields and seepage fields under different well distances,structural positions,and well network conditions,and thus to determine the most reasonable mining method for Block Shen 260.The research has shown that the fine model established by Petrel can accurately describe the structure,lithology,physical properties,and spatial distribution of temperature and pressure fields in geothermal fields.The history matching rate of single well production using CMG thermal recovery software is 100%,which is 15%higher than the matching rate by uniform geological models.Furthermore,this research has determined a reasonable mining well spacing of 400 meters and deploy the five point method along the vertical structural position as the reasonable development method for this block.This study provides a more accurate prediction method for the development of thermal fields in similar regions,which is of great significance to improve the utilization efficiency of geothermal resources and maintain sustainable development.
new energygeothermal resourcesgeologic modelnumerical simulationtemperature fieldpressure fieldseepage fieldwell network deploymentexploration and development
万方数据
维普
