Geothermal Resources Development and Utilization in Daqing Zone

Abstract

After more than ten years of exploration, Daqing, where contains abundant geothermal resources, is determined primarily that there is 4.923~1011m3 geothermal water hidden in the buried depth of less than 2000m in Yaojia Formation, Qingshankou Formation and Quantou Formation, which is equivalent to 3.5~108t heat provided by standard coal. Since 1998, four large water-heat geothermal fields have been found. Their names are Lindian, Dumeng, Dongfeng and Rangxi. More than 30 new geothermal wells were drilled and 15 oil and gas exploration wells were reformed. Well-capacity of heat water reaches 300~2500m3 per day, based on NaHCO3 water type. Well head temperature is 45Ž~80Ž. And the heat water, with high salinity of 2000mg/L~10000mg/L, is rich in iodine, fluorine, bromine and many other trace elements as well as a lot of essential ions, therefore, it is considered to be with high medical value. For now, the four geothermal fields have already been successfully developed and utilized, getting considerable economic, social and environmental benefits in tourism, heating, and bathing, recuperation, planting, breeding, oilfield producing and so on. Daqing has become a well-known gChina spa townh, meanwhile, geothermy has also become an important city card of Daqing.