摘要
苏北盆地蕴藏着丰富的地热资源,开展地热资源成矿预测对于苏北盆地资源勘探开发具有重要意义。实施重力和磁法勘探数据处理32500 km^(2)、大地电磁测深剖面590 km等地球物理勘探工作剖析苏北盆地构造特征,结合地热勘探实践论证古潜山带控热、聚热、储热成矿条件的基础上,提出苏北盆地“壳幔供热—构造控热—潜山聚热—盖层保热”四位一体的古潜山带控复合型地热资源成矿模式。预测了盆地水热、干热二元复合的地热资源分布特征,圈定了3类古潜山水热型热储和基底隆起型干热岩热储。研究可为盆地厚覆盖下古潜山带控热型地热资源区的系统勘探提供找矿方向和借鉴。
The Subei Basin harbors significant geothermal resources,rendering the prediction of geothermal mineralization pivotal for the exploitation and development of these assets.The geophysical exploration work such as gravity and magnetic exploration data processing 32500 km^(2) and magnetotelluric sounding profile 590 km is carried out to analyze the structural characteristics of Subei Basin.In conjunction with geothermal exploration practices,we establish that the ancient Qianshan belt plays a crucial role in the conduction,accumulation,and storage of geothermal resources.Building on this foundation,we propose a novel four-component geothermal resource mineralization model for the Subei Basin,termed the"crust-mantle heating-structural control-buried hill heat accumulation-cap rock heat preservation"framework,governed by the ancient Qianshan belt.This model enables the prediction of the distributional characteristics of geothermal resources within the basin,which exhibit a binary composite nature of water heat and dry heat.We identify three distinct types of thermal reservoirs,ancient Qianshan water heat type thermal reservoirs and basement uplift type dry heat rock thermal reservoirs.The findings of this research provide strategic guidance and benchmarking for the systematic exploration of geothermal resources within thick sedimentary cover-controlled thermal regimes of buried hill belts in the Subei Basin.
作者
江宁
宋涛
邓荻
赵松
包怡
刁谦
赵理芳
Jiang Ning;Song Tao;Deng Di;Zhao Song;Bao Yi;Diao Qian;Zhao Lifang(Jiangsu Eastern China No.814 Geophysical Exploration Co.,Ltd.,Jiangsu,210007;Jiangsu Geological Bureau,Jiangsu,210001)
出处
《当代化工研究》
2024年第24期60-63,共4页
Modern Chemical Research
基金
江苏省专项资金项目“江苏省页岩气资源调查与评价”(项目编号:苏发改能源[2015]1541号)。
关键词
地热资源
潜山
苏北盆地
干热岩
地热勘探
geothermal resources
Qianshan
Subei Basin
dry hot rock
geothermal exploration
