Simulation Research on Impact of EGS Water-Rock Interaction on 
Porosity and Permeability of Geothermal Reservoir

doi:10.3969/j.issn.1674-0696.2017.10.13

Journal of Chongqing Jiaotong University(Natural Science) ›› 2017, Vol. 36 ›› Issue (10): 76-82.DOI: 10.3969/j.issn.1674-0696.2017.10.13

• Port & Waterway · Hydraulic & Hydroelectric · Resources & Environment • Previous Articles Next Articles

Simulation Research on Impact of EGS Water-Rock Interaction on Porosity and Permeability of Geothermal Reservoir

BAO Xinhua1，SU Yuxi2，WU Yongdong1,2，ZHANG Yu1，MA Dan1，HUO Ran1

(1.College of Environment and Resources，Jilin University，Changchun 130021，Jilin，P. R. China; 2.Shandong Province Urban and Rural Construction Investigation and Design Institute，Ji’nan 250031， Shandong，P. R. China)

Received:2016-06-08 Revised:2017-02-10 Online:2017-10-27 Published:2017-10-27

EGS水岩作用对地热储层孔渗特征影响的模拟研究

鲍新华1，苏玉玺2，吴永东1，2，张宇1，马丹1，霍然1

(1.吉林大学环境与资源学院，吉林长春 130021;2.山东省城乡建设勘察设计研究院，山东济南 250000)

作者简介:鲍新华(1963—)，山东菏泽人，男，副教授，博士，主要从事地热及水文地质方面的研究。E-mail：bxinhua@163.com。
基金资助:
国家高技术研究发展计划(863计划)项目(2012AA052801)

Abstract

Abstract: Enhanced Geothermal System (EGS)is a project which develops and uses deep geothermal energy，and the effect of water-rock interaction on reservoir porosity and permeability in the long-term operation of EGS can’t be ignored.Taking rhyolite in Songliao basin and granite in Zhacanggou at Guide County in Qinghai as the research object，the influence of lithology and injection water temperature on water rock interaction during EGS hydrothermal cycle was simulated by means of TOUGHREACT program，and the change of reservoir porosity and permeability caused by water-rock interaction was also analyzed.The results show that when the simulation time reaches ten years，the porosity and permeability increase at the area near the injection well and decrease at the area near the production well.

Key words: water-rock interaction, porosity and permeability, EGS (Enhanced Geothermal System), numerical simulation

摘要： 增强型地热系统(EGS)是一种开发利用深层地热能的工程，在工程的长期运行过程中水岩作用对储层孔渗特征的影响不容忽视。以松辽盆地泉头组流纹岩和青海贵德扎仓沟地区花岗岩为研究对象，借助TOUGHREACT程序模拟EGS水热循环过程中岩性和注入水温度对水岩作用的影响，并分析研究水岩作用引起的储层孔渗特征的变化。结果表明：模拟时间达到10 a时，储层的孔隙度和渗透率在注入井附近增大，在靠近生产井的区域减小。

关键词: 水岩作用, 孔渗特征, 增强型地热系统, 数值模拟

CLC Number:

P641

BAO Xinhua1，SU Yuxi2，WU Yongdong1,2，ZHANG Yu1，MA Dan1，HUO Ran1. Simulation Research on Impact of EGS Water-Rock Interaction on Porosity and Permeability of Geothermal Reservoir[J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(10): 76-82.

鲍新华1，苏玉玺2，吴永东1，2，张宇1，马丹1，霍然1. EGS水岩作用对地热储层孔渗特征影响的模拟研究[J]. 重庆交通大学学报（自然科学版）, 2017, 36(10): 76-82.

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Simulation Research on Impact of EGS Water-Rock Interaction on Porosity and Permeability of Geothermal Reservoir

EGS水岩作用对地热储层孔渗特征影响的模拟研究

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