Effect of Vertical Permeability Heterogeneity in Stratified Formation on Electricity Generation Performance of Enhanced Geothermal System

doi:10.3390/pr9050744

	Effect of Vertical Permeability Heterogeneity in Stratified Formation on Electricity Generation Performance of Enhanced Geothermal System
	Zeng, Yuchao 2; Sun, Fangdi 1; Zhai, Haizhen 3
刊名	PROCESSES
	2021-05-01
卷号	9 期号:5 页码:16
关键词	vertical permeability heterogeneity reservoir permeability enhanced geothermal system electricity generation performance Yangbajing geothermal field
DOI	10.3390/pr9050744
通讯作者	Sun, Fangdi(sfd_geo@gzhu.edu.cn)
英文摘要	Because geologic sedimentation and hydrofracturing processes are not homogeneous, the reservoirs of enhanced geothermal systems (EGSs) are also heterogeneous; this has a significant influence on the electricity generation performance of EGS. Presently, there are a lack of systematic and profound studies on the effect of vertical permeability heterogeneity in stratified formation on the electricity generation performance of EGS. In order to uncover the effect of vertical permeability heterogeneity on electricity generation performance of EGS, in this work we analyzed the influence of vertical permeability heterogeneity on electricity generation performance of EGS through a numerical method based on geological data at the Yangbajing geothermal field. The results indicate that when the average permeability of stratified formations is constant for a homogeneous reservoir, the system attains maximum water production rate, maximum electric power, minimum reservoir impedance and maximum pump power; with the increasing of the vertical permeability heterogeneity, the water production rate gradually decreases, the electric power gradually declines, the reservoir impedance gradually increases and the pump power gradually declines. When the average permeability of stratified formations is constant, with the increasing of the vertical permeability heterogeneity, the injection pressure and energy efficiency only changes very slightly; this indicates that the vertical permeability heterogeneity is not the main factor affecting the system injection pressure and energy efficiency.
资助项目	GDAS' Project of Science and Technology Development[2020GDASYL-20200102020] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200102013] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200301003] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200402003] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200302007] ; GDAS' Project of Science and Technology Development[2019GDASYL-0102002] ; Guangdong Foundation for Program of Science and Technology Research[2019B121205006] ; Guangdong Foundation for Program of Science and Technology Research[2019B121201004] ; National Natural Science Foundation of China[NSFC: 41930865] ; Open Foundation of Key Laboratory of Natural Gas Hydrate, CAS[E0290206] ; Northern Guangdong Soil Environment Observation and Research Station ; Guangdong Engineering Center of Non-point Source Pollution Control
WOS关键词	FRACTURED GRANITE RESERVOIR ; 3-DIMENSIONAL TRANSIENT MODEL ; HOT DRY ROCK ; NUMERICAL-SIMULATION ; HEAT EXTRACTION ; HORIZONTAL WELLS ; SONGLIAO BASIN ; COUPLED MODEL ; EGS ; ENERGY
WOS研究方向	Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000654477600001
资助机构	GDAS' Project of Science and Technology Development ; Guangdong Foundation for Program of Science and Technology Research ; National Natural Science Foundation of China ; Open Foundation of Key Laboratory of Natural Gas Hydrate, CAS ; Northern Guangdong Soil Environment Observation and Research Station ; Guangdong Engineering Center of Non-point Source Pollution Control
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33289]
专题	中国科学院广州能源研究所
通讯作者	Sun, Fangdi
作者单位	1.Guangzhou Univ, Sch Geog & Remote Sensing, Guangzhou 510006, Peoples R China 2.Guangdong Acad Sci, Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Integrated Agroenvironm Pollut, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Guangzhou 510650, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Yuchao,Sun, Fangdi,Zhai, Haizhen. Effect of Vertical Permeability Heterogeneity in Stratified Formation on Electricity Generation Performance of Enhanced Geothermal System[J]. PROCESSES,2021,9(5):16.
APA	Zeng, Yuchao,Sun, Fangdi,&Zhai, Haizhen.(2021).Effect of Vertical Permeability Heterogeneity in Stratified Formation on Electricity Generation Performance of Enhanced Geothermal System.PROCESSES,9(5),16.
MLA	Zeng, Yuchao,et al."Effect of Vertical Permeability Heterogeneity in Stratified Formation on Electricity Generation Performance of Enhanced Geothermal System".PROCESSES 9.5(2021):16.