The Influence of Geological Factors and Transmission Fluids on the Exploitation of Reservoir Geothermal Resources: Factor Discussion and Mechanism Analysis

The geothermal resources present within the reservoir post-oil production in the oil field have hitherto been overlooked and underdeveloped, constituting a novel energy supplement for the maintenance of energy security. The present study constructed a geothermal transmission and exploitation model for oil reservoirs based on the geological environment and the characteristics of geothermal transmission media. This model can be used to analyse the impact of different factors on the efficiency of reservoir geothermal resources. Concurrently, a molecular dynamics model was constructed to reveal the geothermal transmission mechanism at a microscopic perspective, which will facilitate the optimisation of geothermal mining technology. The findings indicate that fluid viscosity hinders geothermal transmission, and the transmission medium of 40mPa·s increases the diameter range of geothermal transmission by 9m compared with 30mPa·s. Furthermore, the deflection angle of reservoir fractures is also not conducive to reservoir geothermal transmission. It has been demonstrated that an increase in the deflection angle results in a reduction of the transmission capacity, owing to substantial fluid filtration. The utilisation of reservoir geothermal resources provides fundamental data support for the rational application of energy and the assurance of energy security.