Adsorption measurements in Devonian shales

High-pressure adsorption of methane on montmorillonite, kaolinite and illite

“…Pressures and temperatures were proposed to be the main factors that influence CH 4 adsorption and CH 4 reservoir (Cheng and Huang, 2004;Cui et al, 2009;Lu et al, 1995;Ross and Bustin, 2009). The experimental evaluation showed that the CH 4 adsorption capacity of shale increases with the increment of pressure (Cheng and Huang, 2004;Loucks et al, 2009;Lu et al, 1995;Bustin, 2007, 2008), implying that the high pressures in the actual shale gas reservoir might result in a large CH 4 adsorption amount.…”

“…The experimental evaluation showed that the CH 4 adsorption capacity of shale increases with the increment of pressure (Cheng and Huang, 2004;Loucks et al, 2009;Lu et al, 1995;Bustin, 2007, 2008), implying that the high pressures in the actual shale gas reservoir might result in a large CH 4 adsorption amount. In contrast, high reservoir temperatures are unfavorable with respect to CH 4 adsorption and decrease the adsorption capacity of shale (Ross and Bustin, 2008;Zhang et al, 2012).…”

“…Abundant studies have focused on CH 4 adsorption in organic matters of shale, and the results have revealed a positive correlation between the organic content and the CH 4 adsorption capacity in raw shale samples (Cui et al, 2009;Lu et al, 1995). The mechanism of CH 4 adsorption in organic matters has been well documented, illustrating that the surface functional groups and micropores provided the adsorption sites for CH 4 (Loucks et al, 2009;Ross and Bustin, 2007Zhang et al, 2012).…”

“…However, Schettler and Parmoly proposed that clay minerals played an important role in CH 4 adsorption in their study of CH 4 adsorption on shale samples from Appalachian basin shales, which had low kerogen contents (Schettler and Parmoly, 1990). Since then, CH 4 adsorption on clay minerals has been investigated by others (Cheng and Huang, 2004;Lu et al, 1995;Ross and Bustin, 2009). In experimental measurements of CH 4 adsorption on clay minerals at various temperatures and low pressures, clay minerals were found to provide adsorption sites and space for CH 4 storage (Cheng and Huang, 2004;Lu et al, 1995;Ross and Bustin, 2009).…”

“…Since then, CH 4 adsorption on clay minerals has been investigated by others (Cheng and Huang, 2004;Lu et al, 1995;Ross and Bustin, 2009). In experimental measurements of CH 4 adsorption on clay minerals at various temperatures and low pressures, clay minerals were found to provide adsorption sites and space for CH 4 storage (Cheng and Huang, 2004;Lu et al, 1995;Ross and Bustin, 2009). The maximum CH 4 adsorption capacity of pure illite at 37.8°C and ≤8.0 MPa was higher than that of shale samples obtained from wells of Michigan, West Virginia and Kentucky, USA (Lu et al, 1995).…”