Simulation of CO2 sequestration in coal beds: The effects of sorption isotherms

Sorption of carbon dioxide, methane and nitrogen in dry coals at high pressure and moderate temperature

“…(11) should therefore be seen as an empirical approach to describe excess sorption isotherms, but it should not be used for gas storage capacity estimation (absolute sorption, n t ) as it lacks physical concept. On the contrary, the Langmuir model applied in this work is based on experimental observations, namely a saturationlimited equilibrium between gas phase and condensed phase and Langmuir-like behavior of coal swelling, which make it suitable for use in ECBM applications (Shi and Durucan, 2004b;Bromhal et al, 2005;Smith et al, 2005;Shi and Durucan, 2006;Bustin et al, 2008;Shi et al, 2008).…”

“…An accurate description of the experimental data is in fact the information needed for practical application such as reservoir modeling of ECBM processes. Moreover, most of them use Langmuir equations to describe gas sorption on coal (Shi and Durucan, 2004b;Bromhal et al, 2005;Smith et al, 2005;Shi and Durucan, 2006;Bustin et al, 2008;Shi et al, 2008), and through the parameters b and n max obtained in this study the sorption isotherm is fully described, as discussed in Section 3.…”

U.S. DOE methodology for the development of geologic storage potential for carbon dioxide at the national and regional scale

“…If no CO 2 isotherm is available, isotherms from similar rank coals in analog basins can be used, such as the isotherm data plotted in Fig. 1 (Botnen et al, 2009;Bromhal et al, 2005;Busch et al, 2003;Chikatamarla et al, 2004;Clarkson and Bustin, 1999;Day et al, 2008a;Durucan and Shi, 2009;Fitzgerald et al, 2005Fitzgerald et al, , 2006Goodman et al, 2007;Harpalani and Mitra, 2010;Harpalani et al, 2006;Jessen et al, 2008;Ozdemir and Schroeder, 2009;Pini et al, 2010;Reeves et al, 2005;Romanov and Soong, 2008;Ross et al, 2009;Siemons and Busch, 2007).…”

Impact of relative permeability hysteresis on geological CO2 storage

“…Injection into geological formations is one option to store CO 2 [Hitchon et al, 1999;Bachu, 2000;Orr, 2004]. Different target formations have been identified for this purpose, including depleted oil and gas reservoirs [Holloway, 2001;Kovscek and Wang, 2005;Kovscek and Cakici, 2005], unminable coal beds [Bromhal et al, 2005], and deep saline aquifers [Bruant et al, 2002;Pruess and García, 2002;Pruess et al, 2003;.…”