鲁西北平原砂岩热储地热地质特征及成因模式  

Geothermal geological characteristics and genetic modelof sandstone thermal reservoirs in northwestern plain of Shandong

作　　者：丁朋朋 贾超[2] 王明珠 王辉[2] 冯克印 魏茂杰 DING Pengpeng;JIA Chao;WANG Mingzhu;WANG Hui;FENG Keyin;WEI Maojie(School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Institute of Marine Science and Technology Geology,Shandong University,Qingdao 266237,Shandong,China;The Second Institute of Hydrogeology and Engineering Geology,Shandong Provincial Bureau of Geology&Mineral Resources(Lubei Geoengineering Exploration Institute),Dezhou 253000,Shandong,China;Shandong Land Space Ecological Restoration Center,Jinan 250014,China)

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]山东大学海洋研究院,山东青岛266237 [3]山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院),山东德州253000 [4]山东省国土空间生态修复中心,济南250014

出　　处：《世界地质》2024年第4期608-618,共11页World Geology

基　　金：山东省自然资源厅2020年度地质勘察项目(鲁勘字(2020)10号);宁夏自然科学基金项目(2023AAC03048);国家自然科学基金项目(42307272)。

摘　　要：为了分析鲁西北平原砂岩热储地热地质特征及成因模式,笔者采用资料收集和实验测试相结合的方法对热储层、地温场、水化学和水位动态变化特征进行研究。结果表明,鲁西北平原砂岩热储类型为新近纪馆陶组和古近纪东营组热储,热储层顶板埋深及地层厚度最大值区域均位于聊城临邑县。热储地温梯度普遍低于3.4℃/100 m,但平原县凸起区地温梯度大于4.0℃/100 m。地热水化学类型以Cl-Na型为主,表现出Na+、K+及Cl-富集的特点。地热水温度为54.4~85.9℃,聊城市临清地区热储温度较高。砂岩热储地热水与深层地下水之间水力联系较小,地热水位变化主要受人工采灌的影响。To analyze the geothermal geological characteristics and formation model of the sandstone geothermal reservoirs in the northwestern plain of Shandong,the authors used a combination of data collection and experimental testing methods to study the characteristics of geothermal reservoirs,geothermal gradient,hydrochemistry,and dynamic changes in water levels.The results show that the sandstone geothermal reservoirs in the northwestern plain of Shandong are mainly of the Neogene Guantao Formation and Paleogene Dongying Formation,with the deepest burial depth of the reservoir top and maximum formation thickness located in Linyi County,Liaocheng.The geothermal gradient is generally below 3.4℃/100 m,except in the uplifted area of Pingyuan County,where the gradient exceeds 4.0℃/100 m.The geothermal water is primarily of the Cl-Na type,characterized by an enrichment of Na+,K+,and Cl-ions.The geothermal water temperature ranges from 54.4 to 85.9℃,with the highest reservoir temperatures observed in Linqing,Liaocheng.There is minimal hydraulic connectivity between the geothermal water in the sandstone reservoir and deep groundwater,and changes in geothermal water levels are mainly influenced by artificial extraction and recharge activities.

关 键 词：砂岩热储 地热地质特征 地热水位 成因模式 鲁西北平原 

分 类 号：P314.1[天文地球—固体地球物理学]