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Knowledge of mixed-gas adsorption behavior on shale is important for reserve estimation, production forecast, and carbon dioxide sequestration. In this work, we combined the multicomponent potential theory of adsorption (MPTA) with the hybrid perturbed-chain statistical associating fluid theory equation of state (hPC-SAFT EOS) to describe mixed-gas adsorption on shale. In the hPC-SAFT-MPTA model,...
A model for gas flow in nano-pores was developed based on the extended Navier–Stokes equations with the assumption of neglecting adsorption and desorption. The model describes multiple flow regimes, including continuum regime, slip flow regime, transition regime, as well as molecular regime. The total mass flux includes a convective motion term and a diffusion mass transport term. The latter was obtained...
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