Distribution characteristics and resource potential of thermal bedrock karst reservoirs in Shandong province

doi:10.3969/j.issn.1672-7703.2019.06.002

Abstract

Abstract: Geothermal resources at medium - low temperature are abundant in the Shandong area. They are widely distributed and have various types, good development and utilization conditions. However, there are less studies on the distribution of thermal bedrock karst reservoirs and the development and utilization potential of the geothermal resources. Comprehensive analysis of drilling, logging, and production test data indicates that the Cambrian-Ordovician bedrock karst with thermal resources has an average density of 2.6722 g/cm3 and a specific heat capacity of 0.5857- 0.95856 J/(g·K). The thermal bedrock karst reservoirs are divided into 12 geothermal regions and 51 geothermal subregions, covering an area of about 4.4×104 km2. Based on the geological division of the Cambrian-Ordovician bedrock karst reservoirs, the temperature of the reservoirs and the chemical characteristics of the geothermal fluids of each region and subregion are analyzed and summarized. Thermal volume method estimates that the geothermal resources are 998.74×1018J, and the recoverable geothermal resources are 149.81×1018 J in the Cambrian-Ordovician bedrock karst reservoirs in the Shandong area.

Key words: geothermal resources, thermal bedrock reservoir, Shandong Province, Cambrian-Ordovician

CLC Number:

Liu Shuliang, Liu Ziyong, Gao Zhongxian, Wen Shengfu, Ren Xiaoyong, Wang Dong, Wei Zhengnan. Distribution characteristics and resource potential of thermal bedrock karst reservoirs in Shandong province[J]. China Petroleum Exploration, 2019, 24(6): 699-708.

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