气候变化领域集成服务门户(CCPortal): Identifying geologic characteristics and operational decisions to meet global carbon sequestration goals

CCPortal

DOI	10.1039/d0ee02488k
	Identifying geologic characteristics and operational decisions to meet global carbon sequestration goals
	Middleton R.S.; Ogland-Hand J.D.; Chen B.; Bielicki J.M.; Ellett K.M.; Harp D.R.; Kammer R.M.
发表日期	2020
ISSN	17545692
起始页码	5000
结束页码	5016
卷号	13 期号:12
英文摘要	Geologic carbon sequestration is the process of injecting and storing CO2 in subsurface reservoirs and is an essential technology for global environmental security (e.g., climate change mitigation) and economic security (e.g., CO2 tax credits). To meet energy, economic, and environmental goals, society will have to identify vast volumes of high-capacity, low-cost, and viable storage reservoirs for sequestering CO2. In turn, this requires understanding how major geologic characteristics (such as reservoir depth, thickness, permeability, porosity, and temperature) and design and operational decisions (such as injection well spacing) impact CO2 injection rates, storage capacity, and economics. Although many numerical simulation tools exist, they cannot repeat the required thousands or millions of simulations to identify ideal reservoir properties and the sensitivity and interaction between geologic parameters and operational decisions. Here, we use SCO2T (pronounced "Scott"; Sequestration of CO2 Tool) - a fast-running, reduced-order modeling framework - to explore the sensitivity of major geologic parameters and operational decisions to engineering (CO2 injection rates, plume dimensions, and storage capacities and effectiveness) and costs. Our results show, for the first time, benefits and impacts such as allowing CO2 plumes to overlap, how different well spacing patterns affect CO2 sequestration, the effects on costs of including brine treatment and disposal, and the effect of restricting injection rates to 1 MtCO2 per y based on well limitations. We reveal multiple novel and unintuitive findings including: (i) deeper reservoirs have reduced carbon sequestration costs until injection rates reach 1 MtCO2 per y, at which point deeper reservoirs become more expensive, (ii) thicker formations allow for increased injection rates and storage capacity, but thickness barely impacts plume areas, (iii) higher geothermal gradients result in reduced sequestration costs, unless brine treatment/disposal costs are included, at which point reservoirs having lower geothermal gradients are more economical because they produce less brine for each unit of injected CO2, and (iv) allowing plumes to overlap has a significantly positive impact of increasing storage capacities but has only a small influence on reducing sequestration costs. Overall, our results illustrate new scientific conclusions to help identify suitable sites to inject and store CO2, to help understand the complex interaction between geology and resulting costs, and to help support the pursuit of meeting global sequestration targets. This journal is © The Royal Society of Chemistry.
英文关键词	Carbon; Carbon capture; Carbon dioxide; Climate change; Cost engineering; Environmental technology; Injection (oil wells); Petroleum reservoir engineering; Taxation; Well spacing; Carbon sequestration; Climate change mitigation; Environmental security; Geologic carbon sequestrations; Geologic characteristics; Geothermal gradients; Operational decisions; Reduced order models; Cost reduction; carbon emission; carbon sequestration; carbon storage; decision making; emission control; environmental economics; geological survey; global perspective; operations technology
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189440
作者单位	Earth and Environmental Sciences, Los Alamos National Laboratory, United States; Department of Earth Science, Eth, Zurich, Switzerland; Department of Civil, Environmental and Geodetic Engineering, Ohio State University, United States; Indiana Geological and Water Survey, Indiana University, United States; Pervasive Technology Institute, Indiana University, United States
推荐引用方式 GB/T 7714	Middleton R.S.,Ogland-Hand J.D.,Chen B.,et al. Identifying geologic characteristics and operational decisions to meet global carbon sequestration goals[J],2020,13(12).
APA	Middleton R.S..,Ogland-Hand J.D..,Chen B..,Bielicki J.M..,Ellett K.M..,...&Kammer R.M..(2020).Identifying geologic characteristics and operational decisions to meet global carbon sequestration goals.Energy & Environmental Science,13(12).
MLA	Middleton R.S.,et al."Identifying geologic characteristics and operational decisions to meet global carbon sequestration goals".Energy & Environmental Science 13.12(2020).