基于REV描述方法的深层热储孔隙型结构导热模型构建  

Construction of Thermal Conductivity Model of Deep Geothermal Reservoir Pore Structure Based on REV Description Method

作　　者：谭明哲 王志国[1,2] 秦晓凯 刘昌宇 王忠华[1] 宋永臣[3] TAN Mingzhe;WANG Zhiguo;QIN Xiaokai;LIU Changyu;WANG Zhonghua;SONG Yongchen(School of Civil Engineering,Northeast Petroleum University,Daqing 163318,China;Heilongjiang Province Geothermal Resources Efficient Development and Comprehensive Utilization Collaborative Innovation Center,Daqing 163318,China;School of Energy and Power,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]东北石油大学土木建筑工程学院,大庆163318 [2]黑龙江省地热资源高效开发与综合利用协同创新中心,大庆163318 [3]大连理工大学能源与动力学院,大连116024

出　　处：《工程热物理学报》2024年第2期334-342,共9页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.52206235);黑龙江省科学基金项目(No.LH2022E032)。

摘　　要：随着“双碳”目标提出,地热能研究及利用得到了快速发展。在地热能开发过程中,合理取热、精准勘测及自然恢复等,对地热能有效利用影响较大,目前研究存在一定不足。针对孔隙岩溶型深层热储,根据开发过程微观结构动态变化特点,将其划分为开发区、波动区和原始区。基于多孔介质REV(Representative Elementary Volume)方法,对深层热储进行表征,给出了描述参数,据此构建了深层热储导热分析模型。利用所建模型,以花岗岩作为应用实例,进行了数值模拟计算,分析了孔隙含水率和孔隙含杂率等对地热储层导热影响。本文所做工作,可为精准分析储层传热特性和开采过程动态变化等提供依据。With the proposed goal of“carbon neutrality,peak carbon dioxide emissions”,the re-search and utilization of geothermal energy have been developed rapidly.In the process of geothermal energy development,reasonable heating,accurate survey and natural recovery have a great impact on the effective utilization of geothermal energy,so there are some deficiencies in the current research.According to the dynamic change characteristics of micro-structure in the development process,pore karst deep geothermal reservoir is divided into development area,fluctuation area and original area.Based on REV(Representative Elementary Volume)method,the deep geothermal reservoir was characterized and the descriptive parameters were given.Based on this,the thermal conductivity analysis model of deep geothermal reservoir was constructed.With granite as an example,the nu-merical simulation was carried out to analyze the influence of pore water content and pore impurity content on thermal conductivity of geothermal reservoir.The work done in this paper can provide a basis for accurate analysis of reservoir heat transfer characteristics and dynamic changes in mining process.

关 键 词：表征单元体 地热储层 模型构建 导热特性 热储区间划分 

分 类 号：TK52[动力工程及工程热物理—热能工程]