Abstract:The geological conditions of geothermal in eastern Jinan are good, and typical representative is Zhangqiu geothermal field. In order to estimate and evaluate its geothermal resources, and serve a further prefeasibility survey, based on the data collection and field exploration, according to geological conditions of geothermal and geothermal field exploration research, the Ordovician limestone fissure karst layered and striplike thermal reservoir are determined as the main research object of Zhangqiu geothermal field. The geothermal energy resources and geothermal fluid recoverable amount in Zhangqiu geothermal field are calculated. The total area of Zhangqiu geothermal field is 468.524km2. In the area of 385.225km2 in Ⅰand Ⅱcalculation area of Zhangqiu geothermal field, the total geothermal resource is 1.337×1018J which is equivalent to 0.4562×108t of standard coal. The degree of investigation of geothermal resource reserves is inferred. According to the maximum allowable pressure drop value of 0.3MPa, the recoverable amount of geothermal fluid resources of Ordovician thermal storage in Zhangqiu geothermal field is 6620.56m3/d. The geothermal field capacity calculated according to the recoverable amount of geothermal fluid is 10.83MW, and the cumulative available thermal energy for annual mining is 5.690×108MJ which is equivalent to 1.941104t/a of standard coal. Through this research, theoretical support is provided for the development and utilization of geothermal resources in the area, driving local economic development and building an energysaving society.
