Research on formation mode and development potential of geothermal resources in Beijing-Tianjin-Hebei region

Haze in Beijing-Tianjin-Hebei region is relatively heavy; at the same time, this region is rich in geothermal resources. The development of geothermal resources can contribute to the energy structure adjustment and the control of haze in that region. In this paper, based on the analysis of the fracture, strata, terrestrial heat flow and geothermal gradient of Beijing-Tianjin-Hebei region, the authors summed up the formation mode and hosting conditions of convection geothermal and conductive geothermal resources respectively. The quantity, exploitation situation and the development potential of geothermal resources were also calculated. The result shows that geothermal resource reserves are equivalent to about 138.3 billion tons of standard coal, and heat in geothermal fluid of the local region amounts to about 11 million tons of standard coal. Nevertheless, the exploitation quantity is only equivalent to about 10% of the total resources, and hence the potential for geothermal resources development and utilization is huge.