广西北部湾沿岸地热资源及其利用——以合浦地热田为例  

Geothermal resources along the coast of Beibu Gulf and their utilization:An example from Hepu geothermal field

作　　者：黄荣华 宋荣彩[1] 张超 王迎春 柳贵康 李涛[1] 吴勇君 Huang Ronghua;Song Rongcai;Zhang Chao;Wang Yingchun;Liu Guikang;Li Tao;Wu Yongjun(College of Energy,Chengdu University of Technology,Chengdu,Sichuan 610059,China)

机构地区：[1]成都理工大学能源学院,四川省成都市610059

出　　处：《天然气勘探与开发》2022年第4期141-149,共9页Natural Gas Exploration and Development

基　　金：国家自然科学基金项目“鲜水河断裂带高温地热系统控热机制的定量研究”(编号:42002300);油气藏地质及开发工程国家重点实验室(成都理工大学)开放基金资助项目青海共和盆地岩石圈热结构演化特征研究(编号:PLC2020008)。

摘　　要：近年,地热能在全国范围内广泛兴起,广西地热资源勘探也越来越热,已开展对全区13个地级市浅层地热能开发地质调查。但是,相较于国内其他省份,广西在地热能利用方面较少。因此,勘探开发地热资源具有十分广阔的前景。为此,以合浦地热田为例,在充分搜集区域构造、地层、深部构造及地热井水温、热储、水化学等资料的基础上,认为研究区热源存在火山余热和地幔热流两种,具有干热岩开发潜力,盖层条件好。属于传导岩浆余热型成因,具有特殊的“双层两类”地热成因模式。根据研究区的特点,对该地区的地热资源开发利用提供了中低温地热发电、地热水梯级利用等方面的评价建议,为北部湾城市群能源发展规划提供参考。In recent years, geothermal has become increasingly attractive across China. Especially in Guangxi, geological survey on shallow geothermal has been conducted in 13 prefecture-level cities. However, the geothermal utilization is less than other provinces.It is of great significance to explore and develop geothermal resources. So, Hepu geothermal field was taken as an example. Based on regional structure, stratigraphy, deep structure, and water temperature in some geothermal wells, heat storage, and water chemistry,the geothermal resources in this area were analyzed. There are two types of geothermal resources found in Hepu geothermal field, for example volcanic waste heat and mantle heat flow. The hot dry rock has the potential for development because of good regional seal conditions. These resources are originated from the residual heat of conducting magma, following a special “two-layer and two-type”model. Finally, some suggestions(e.g. medium-and low-temperature geothermal power generation and cascade utilization of geothermal water) were proposed for geothermal resource development and utilization. The study results provide a reference for the energy planning in cities around Beibu Gulf.

关 键 词：合浦盆地 中低温地热资源 传导型“双层两类”成因模式 地热资源开发利用 

分 类 号：P314[天文地球—固体地球物理学] TK529[天文地球—地球物理学]