Deep bedrock geothermal resources in the Maichen Sag,Beibuwan Basin and their potential for exploitation and utilization

作     者：Yan Zeng Ying Zhang 

作者机构：Exploration and Production Research InstituteSINOPECBeijing100083China 

出 版 物：《能源地球科学(英文)》 (Energy Geoscience)

年 卷 期：2023年第4卷第4期

页      面：188-197页

核心收录：

学科分类：0820[工学-石油与天然气工程] 070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0804[工学-仪器科学与技术] 0835[工学-软件工程] 

基　　金：This work was funded by multiple scientific research programs,including Evaluation and Optimal Target Selection of Deep Geothermal Resources in the Igneous Province in South China(No.:2019YFC0604903) Analysis and Geothermal Reservoir Stimulation Methods of Deep High-temperature Geothermal Systems in East China(No.:2021YFA0716004)of the National Key Research and Development Program of China a project entitled Deep Geological Processes and Resource Effects of Basins(No.:U20B6001)of the Joint Fund Program of the National Natural Science Foundation of China and Sinopec a project entitled Siting and Target Evaluation of Deep Geothermal Resources in Key Areas of Southeastern China(No.:P20041-1)of the Sinopec Science and Technology Research Program 

主　　题：Maichen sag Geothermal resource Resource evaluation Parameter estimation for geothermal resource exploitation Numerical simulation 

摘      要：The Maichen Sag in the south-central part of the Beibuwan Basin is abundant in geothermal resources that have not been widely exploited and utilized due to inadequate research on *** study evaluated the geothermal resources in the Maichen Sag based on the regional geological setting and geothermal *** units for assessment and a geological model for areas with geothermal resources were established using spatial analysis *** spatial distribution models of the physical and thermophysical properties of the geothermal reservoirs were also built using the Kriging interpolation *** on the terrestrial heat flow distribution in the target areas,the spatial distribution of the geo-temperature field through the inversion under the constraints of the temperature data from boreholes were *** such as deep geo-temperature,thermophysical properties of rocks,and terrestrial heat flow values,were integrated into this quantitative evaluation of geothermal resources through the geological modeling-based volume method and the geothermal reservoir engineering-based numerical simulation *** results show that the Maichen Sag has favorable heat source conditions with intersected,deep-rooted faults and widely developed Upper Paleozoic fissured granite geothermal *** northern outer slope zone at a burial depth of 3‒5 km on the tectonic plane of the basement in the sag is suggested to be a potential target area,where,as calculated using the volume method,is likely to be the home to the total geothermal resources of 80.4×10^(9)GJ(i.e.,2.75×10^(9)tonnes of coal equivalent(tce))in the bedrock geothermal reservoirs at a burial depth of 3‒6 *** geotemperature of 172‒201℃at a formation depth of 5 km in the sag also indicates that the deep geothermal resources are of high value for exploitation.