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Evaluation of surface diffusion in microporous/mesoporous media using a numerical model applied to rate-of-adsorption data: Implications for improved gas permeability estimation in shales/tight rocks using drill cuttings

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Abstract Adsorbed-phase surface diffusion has been recognized as an important controlling factor on gas apparent permeability in micropores and smaller mesopores. However, for the estimation of surface diffusion coefficients of… Click to show full abstract

Abstract Adsorbed-phase surface diffusion has been recognized as an important controlling factor on gas apparent permeability in micropores and smaller mesopores. However, for the estimation of surface diffusion coefficients of shales, the commonly used empirical methods cannot account for the complexity of rock fabric in the matrix system of tight rocks. Further, the small sample sizes and amounts (

Keywords: surface; gas; permeability; surface diffusion; tight rocks

Journal Title: Fuel
Year Published: 2021

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