Numerical study of heat transfer processes in a reservoir–hydraulic fracture system in the constant extraction mode

The formation of a nonstationary temperature field in the reservoir–hydraulic fracture system in the fluid extraction mode from the reservoir is studied based on numerical simulation. It is shown that the temperature field is sensitive to fracture parameters such as width and permeability. It is established that, depending on the reservoir permeability and crack width, the curve of the temperature change during the time when the fluid flows into the well shows sections of negative and positive temperature dynamics, due to the adiabatic effect and the Joule–Thomson effect, respectively.