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arXiv · 1507.07770

Comparison of CO2 trapping in highly heterogeneous reservoirs with Brooks-Corey and van Genuchten type capillary pressure curves

Naum I. Gershenzon·Robert W. Ritzi Jr.·David F. Dominic·Edward Mehnert·Roland T. Okwen
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Abstract

Geological heterogeneities essentially affect the dynamics of a CO2 plume in subsurface environments. Previously we showed how the dynamics of a CO2 plume is influenced by the multi-scale stratal architecture in deep saline reservoirs. The results strongly suggest that representing small-scale features is critical to understanding capillary trapping processes. Here we present the result of simulation of CO2 trapping using two different conventional approaches, i.e. Brooks-Corey and van Genuchten, for the capillary pressure curves. We showed that capillary trapping and dissolution rates are very different for the Brooks-Corey and van Genuchten approaches when heterogeneity and hysteresis are both represented.

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Naum I. Gershenzon, Robert W. Ritzi Jr., David F. Dominic, Edward Mehnert, Roland T. Okwen. 2015-07-28. Comparison of CO2 trapping in highly heterogeneous reservoirs with Brooks-Corey and van Genuchten type capillary pressure curves. https://doi.org/10.1016/j.advwatres.2016.07.022

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