摘要
为实现对武汉市中深层地热资源的开发,开展武汉市中深层地热资源地质与地球物理模型的二维正演的研究。为确保采集的地质数据满足或符合二维正演需求,引进广域电磁法,设计外业勘探数据的采集与处理;根据武汉地区地热赋存模式,进行地热的分区,建立武汉市中深层地热资源地质与地球物理模型;采用卡尼亚视电阻率计算公式计算观测视电阻率,设计基于有限差分法的模型边值正演求解。模型计算结果与实测剖面值的对比分析后,得到如下结论:正演曲线形态符合模型与实际地层特征,对关键地热盖层与地热储层有明显频率分段变化。
To achieve the development of mid to deep geothermal resources in Wuhan,a two-dimensional forward modeling study on the geological and geophysical models of mid to deep geothermal resources in Wuhan has been carried out.To ensure that the collected geological data meets or meets the requirements of two-dimensional forward modeling,the wide area electromagnetic method is introduced to design the collection and processing of field exploration data;According to the geothermal storage mode in Wuhan area,divide the geothermal resources into different zones and establish a geological and geophysical model for the middle and deep geothermal resources in Wuhan city;The Kania apparent resistivity calculation formula is used to calculate the observed apparent resistivity,and the model boundary value forward solution based on the finite difference method is designed.After comparing the calculated results of the model with the measured profile values,the following conclusion can be drawn:the forward curve shape conforms to the model and actual stratigraphic characteristics,and has significant frequency segmented changes for key geothermal cover layers and geothermal reservoirs.
作者
刘基强
樊永生
董艳平
彭耀
徐联泽
陈谱
Liu Jiqiang;Fan Yongsheng;Dong Yanping;Peng Yao;Xu Lianze;Chen Pu(Wuhan Geological Engineering Survey Institute Co.,Ltd.,Wuhan,China)
出处
《科学技术创新》
2023年第11期22-25,共4页
Scientific and Technological Innovation
关键词
武汉市
地质
二维正演
地球物理模型
地热资源
中深层
Wuhan City
geology
two-dimensional forward modeling
geophysical model
geothermal resources
meso-deep
