气候变化领域集成服务门户(CCPortal): Modeling Fluid Reinjection Into an Enhanced Geothermal System

CCPortal

DOI	10.1029/2020GL089886
	Modeling Fluid Reinjection Into an Enhanced Geothermal System
	Parisio F.; Yoshioka K.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	The manuscript analyzes the stimulation for an Enhanced Geothermal System development in Acoculco, Mexico. Using an analytical penny-shaped hydraulic fracture model covering different propagation regimes, we computed the final fracture length and width by varying fluid properties with temperature. Our analysis indicates that for the given scenario, the fluid viscosity plays a minor role and instead flow rate and time of the stimulation are the controlling variables. We computed the fracture reopening as a consequence of water reinjection in the second stage of the stimulation through numerical computations based on the enriched discontinuity method. The computation shows that a single isolated fracture will not provide sufficient permeability, as the continuous injection will quickly fill and pressurize the crack. We demonstrate that the fracture needs to be connected to a permeable network to avoid excessive pressurization and achieve a commercially exploitable reservoir for Enhanced Geothermal System. ©2020. The Authors.
英文关键词	Geothermal fields; Numerical methods; Continuous injections; Enhanced geothermal systems; Fluid property; Fluid viscosity; Fracture length; Numerical computations; Propagation regimes; Water reinjection; Fracture; computational fluid dynamics; crack propagation; discontinuity; hydraulic fracturing; numerical model; viscosity; Mexico [North America]
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169617
作者单位	Chair of Soil Mechanics and Foundation Engineering, Technische Universität Bergakademie Freiberg, Freiberg, Germany; Department of Environmental Informatics, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
推荐引用方式 GB/T 7714	Parisio F.,Yoshioka K.. Modeling Fluid Reinjection Into an Enhanced Geothermal System[J],2020,47(19).
APA	Parisio F.,&Yoshioka K..(2020).Modeling Fluid Reinjection Into an Enhanced Geothermal System.Geophysical Research Letters,47(19).
MLA	Parisio F.,et al."Modeling Fluid Reinjection Into an Enhanced Geothermal System".Geophysical Research Letters 47.19(2020).