Unsteady-state nature of sorption and diffusion phenomena in the micropore structure of coal. Part 1. Theory and mathematical formulation

J. E. Kolesar, Turgay Ertekin, S. T. Obut

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Abstract

A single-phase, 1D mathematical formulation is developed in radial/cylindrical coordinates to examine unsteady-state micropore sorption in a composite micropore/fracture, coalbed-methane transport problem. In the formulation, the micropore transport equation accounts for unsteady-state sorption and diffusion in the primary porosity. Gas entering the fracture network is considered a source term in the fracture-transport equation. The micropore and fracture systems are coupled by equating the gas pressure at the surface of the micropore elements to the pressure in the fracture network.

Original languageEnglish (US)
Pages (from-to)81-8815233
Number of pages8815153
JournalSPE Formation Evaluation
Volume5
Issue number1
StatePublished - Mar 1990

All Science Journal Classification (ASJC) codes

  • Process Chemistry and Technology

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