南堡凹陷-西南庄凸起一带干热岩地热资源赋存分布特征分析

Analysis of Occurrence Conditions of Hot-dry Rock Geothermal Resources in Nanpu Sag and Xinanzhuang Uplift

结合区域大地构造背景、以往测温数据,重点分析南堡凹陷-西南庄凸起一带地热地质学指标、地温场特征,评估了该区的干热岩资源赋存潜力。分析南堡凹陷-西南庄凸起一带钻孔测温资料可知,该区新生界地温梯度为(2.2℃~7.1℃)/(100 m)。经估算,5 km埋深地温最高可达200.32℃,5 km以浅赋存的理论干热岩资源总量为5.81×1020J,折合198.54亿t标准煤。最后,对该区成因机制进行分析,初步认为该区为传导型干热岩地热资源。

Based on the geotectonic background and related temperature measured data in Nanpu sag and Xinanzhuang uplift,analyzed hot dry rock resource potential from geothermal geological indicators and geothermal field characteristics.On the basis of previous geological information,the geothermal gradient in the Cenozoic in Nanpu sag and Xinanzhuang uplift is 2.2 ℃ to 7.1 ℃/(100 m).The temperature of the area with buried depth 5 km range can reach 200.32 ℃,the hot and dry rock resources can be5.81×1020 J,amount to equivalent of coal 19.854 billion tons.Finally,it summarized the formation models and it was considered through analysis that the formation models was mainly conductive hot-dry rock.