Effects of Moisture and Salinity on Methane Adsorption in Kerogen: A Molecular Simulation Study.

ABSTRACT: The adsorption characteristics of methane in shales play a critical role in the assessment of shale gas resources. The microscopic adsorption mechanism of methane considering the effect of moisture and especially salinity remains to be explored. In this work, combined molecular dynamics and grand canonical Monte Carlo simulations are conducted to investigate the adsorption behaviors of methane in the realistic kerogen matrixes containing different moisture contents (0-6 wt %) and various salinities (0-6 mol/L NaCl). Adsorption processes are simulated under realistic reservoir conditions at four temperatures in the range from 298.15 to 358.15 K and pressures up to 40 MPa. Effects of the moisture content on methane adsorption capacities are analyzed in detail. Simulation results show that th

SUBMITTER: Zhou J 

PROVIDER: S-EPMC7011769 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature