 Simplified physics model of CO 2 plume extent in stratified aquifer‐caprock systemsPriya Ravi Ganesh and Srikanta Mishra Greenhouse Gases: Science and Technology, 2016, vol. 6, issue 1, 70-82 Abstract: The extent of plume migration as injected CO 2 displaces the native reservoir fluids is a crucial performance metric to ensure safe and effective geologic sequestration. In this paper, we develop and validate a simplified physics model for the outer extent of CO 2 ‐brine interface in a stratified aquifer‐caprock system. This involves quantifying the total storage efficiency, which is defined as the product of the volumetric sweep and displacement efficiencies, based on simulations covering an extensive parameter space of different reservoir and caprock properties. We model CO 2 injection into a 2‐D radially symmetric brine‐filled reservoir with vertical permeability variations that is in hydraulic communication with a caprock. Based on insights from a suite of detailed numerical simulations of our system, the most important terms in the simplified model for total storage efficiency involve the relative permeability model followed by integrated measures of reservoir heterogeneity. A relationship is established for the plume extent at the end of injection from the amount of CO 2 injected and the storativity (porosity‐thickness product) of the reservoir. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd Date: 2016 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:wly:greenh:v:6:y:2016:i:1:p:70-82 Access Statistics for this article More articles in Greenhouse Gases: Science and Technology from Blackwell Publishing |
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