A Simplified 1-D Model for Calculating CO2 Leakage through Conduits

doi:10.2172/1006401

GSTDTAP > 地球科学

DOI	10.2172/1006401
报告编号	LBNL-4266E
来源ID	OSTI ID: 1006401
	A Simplified 1-D Model for Calculating CO2 Leakage through Conduits
	Cook, DR
	2011-02-15
出版年	2011
语种	英语
国家	美国
领域	地球科学
英文摘要	In geological CO{sub 2} storage projects, a cap rock is generally needed to prevent CO{sub 2} from leaking out of the storage formation. However, the injected CO{sub 2} may still encounter some discrete flow paths such as a conductive well or fault (here referred to as conduits) through the cap rock allowing escape of CO{sub 2} from the storage formation. As CO{sub 2} migrates upward, it may migrate into the surrounding formations. The amount of mass that is lost to the formation is called attenuation. This report describes a simplified model to calculate the CO{sub 2} mass flux at different locations of the conduit and the amount of attenuation to the surrounding formations. From the comparison among the three model results, we can conclude that the steady-state conduit model (SSCM) provides a more accurate solution than the PMC at a given discretization. When there is not a large difference between the permeability of the surrounding formation and the permeability of the conduits, and there is leak-off at the bottom formation (the formation immediately above the CO{sub 2} plume), a fine discretization is needed for an accurate solution. Based on this comparison, we propose to use the SSCM in the rapid prototype for now given it does not produce spurious oscillations, and is already in FORTRAN and therefore can be easily made into a dll for use in GoldSim.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5154
专题	地球科学
推荐引用方式 GB/T 7714	Cook, DR. A Simplified 1-D Model for Calculating CO2 Leakage through Conduits,2011.