气候变化领域集成服务门户(CCPortal): Sinking CO2 in Supercritical Reservoirs

CCPortal

DOI	10.1029/2020GL090456
	Sinking CO2 in Supercritical Reservoirs
	Parisio F.; Vilarrasa V.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Geologic carbon storage is required for achieving negative CO2 emissions to deal with the climate crisis. The classical concept of CO2 storage consists in injecting CO2 in geological formations at depths greater than 800 m, where CO2 becomes a dense fluid, minimizing storage volume. Yet CO2 has a density lower than the resident brine and tends to float, challenging the widespread deployment of geologic carbon storage. Here, we propose for the first time to store CO2 in supercritical reservoirs to reduce the buoyancy-driven leakage risk. Supercritical reservoirs are found at drilling-reachable depth in volcanic areas, where high pressure (p > 21.8 MPa) and temperature (T > 374°C) imply CO2 is denser than water. We estimate that a CO2 storage capacity in the range of 50–500 Mt yr−1 could be achieved for every 100 injection wells. Carbon storage in supercritical reservoirs is an appealing alternative to the traditional approach. © 2020. The Authors.
英文关键词	Reservoirs (water); Buoyancy-driven; Carbon storage; Geologic carbon storages; Geological formation; Injection wells; Storage volumes; Traditional approaches; Volcanic areas; Carbon dioxide; buoyancy; carbon dioxide; carbon emission; carbon storage; deep drilling; fluid composition; high pressure; hydrogeology; leakage; supercritical flow
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/169358
作者单位	Chair of Soil Mechanics and Foundation Engineering, Institute of Geotechnics, Technische Universität Bergakademie Freiberg, Freiberg, Germany; Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), Barcelona, Spain; Mediterranean Institute for Advanced Studies (IMEDEA), Spanish National Research Council (CSIC), Esporles, Spain; Associated Unit: Hydrogeology Group UPC-CSIC, Barcelona, Spain
推荐引用方式 GB/T 7714	Parisio F.,Vilarrasa V.. Sinking CO2 in Supercritical Reservoirs[J],2020,47(23).
APA	Parisio F.,&Vilarrasa V..(2020).Sinking CO2 in Supercritical Reservoirs.Geophysical Research Letters,47(23).
MLA	Parisio F.,et al."Sinking CO2 in Supercritical Reservoirs".Geophysical Research Letters 47.23(2020).