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3-D Modelling and Experimental Comparison of Reactive Flow in Carbonates under Radial Flow Conditions.


ABSTRACT: We use a two-scale continuum model to simulate reactive flow and wormhole formation in carbonate rocks under 3-D radial flow conditions. More specifically, we present a new structure-property relationship based on the fractal geometry theory, to describe the evolution of local permeability, pore radius, and specific area with porosity variation. In the numerical calculation, to improve the convergence rate, the heterogeneous medium in question is extended by adding a thin layer of homogeneous porous medium to its inlet. We compare the simulation results with the available experimental observations and find that they are qualitatively consistent with each other. Additionally, sensitivity analysis of the dissolution process with respect to acid injection rate and rock heterogeneity, including heterogeneity magnitude and correlation length, is presented.

SUBMITTER: Liu P 

PROVIDER: S-EPMC5735102 | BioStudies | 2017-01-01

REPOSITORIES: biostudies

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