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Impact of the capillary fringe in vertically integrated models for CO 2 storage
Author(s) -
Nordbotten J. M.,
Dahle H. K.
Publication year - 2011
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2009wr008958
Subject(s) - capillary action , sharpening , mechanics , scale (ratio) , work (physics) , leakage (economics) , lead (geology) , scale model , materials science , physics , mechanical engineering , geology , engineering , thermodynamics , composite material , aerospace engineering , macroeconomics , quantum mechanics , geomorphology , economics
This paper investigates vertically integrated equilibrium models for CO 2 storage. We pay particular attention to the importance of including the effect of fine‐scale capillary forces in the integrated equations. This aspect has been neglected in previous work, where the fluids are segregated by a sharp interface. Our results show that the fine‐scale capillary forces lead to qualitative and quantitative alterations of the integrated equations. Interestingly, while such forces are dispersive on the fine scale, they lead to self‐sharpening of the solution on the integrated scale. We discuss these aspects for injection, leakage, and long‐term migration through the application by comparison to common sharp interface models proposed in the literature.