A multiscale approach for simulation of shale gas transport in organic nanopores

Xu Yang, Wenning Zhou, Xunliang Liu and Yuying Yan

Energy, 2020, vol. 210, issue C

Abstract: Gas flow behaviors in shale are significantly complicated because of the inherent complexity and heterogeneity of shale formations. Revealing the gas transport characteristic is critical for achieving high efficiency of shale gas exploitation. In this work, a multiscale approach combined molecular simulation and lattice Boltzmann method has been proposed for investigating gas transport in shale organic nanopores. Firstly, the characteristic of adsorbed gas in shale nanopore was obtained by molecular simulation. Then, the adsorption properties were integrated to develop a lattice Boltzmann model, which can capture slippage and surface diffusion effects in shale nanopores. By employing this proposed multiscale model, the effects of pressure, temperature and pore size on shale gas adsorption and transport characteristics in organic nanopore were studied. Numerical results show pore size and pressure have great influences on gas adsorption behaviors. The gas apparent permeability tends to increase with the increment of temperature and decrease of pressure. Moreover, the influences of pore size and pressure on surface diffusion permeability were examined. Numerical results indicate the contribution of surface diffusion to overall apparent permeability tends to be enhanced in small pore and low pressure. However, this influence will be greatly weakened with the increasing pore size.

Keywords: Shale gas transport; Multiphysical fields; Multiscale approach; Lattice Boltzmann model; Molecular simulation (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (13)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544220316558
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:210:y:2020:i:c:s0360544220316558

DOI: 10.1016/j.energy.2020.118547

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().