Carbon dioxide storage potential of shales

Sorption Characteristics of CO<sub>2</sub> on Rocks and Minerals in Storing CO<sub>2</sub> Processes

“…It has been shown that shale [11] and sandstone and granite [12][13][14] have a certain degree of sorption capacities for CO 2 under air-dry conditions. The experimental data obtained in this study confirm the results of the previous literatures.…”

“…Up to now, gas sorption isotherm experiments in CO 2 /rock or CO 2 /water/rock systems have been conducted using shale at 45-50˚C and pressures up to 20 MPa [11] and sandstone and granite at 33-200˚C, and pressures up to 20 MPa [12][13][14]. Fujii et al [13,14] indicates that at high pressures (> 10MPa), the amount of CO 2 sorbed by granite is comparable to that by sandstone, but the sorption mechanisms and processes for sandstone, shale, and granite has not been elucidated.…”

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS

“…Shales are of interest owing to the low porosity and permeability, which allow them to serve as cap rocks for hydrocarbon reservoirs (Best & Katsube, 1995), repository sites for nuclear wastes (Mallants et al, 2001;Bossart & Thury, 2007), and storehouses for carbon sequestration (Chadwick et al, 2004;Busch et al, 2008). During seismic surveys of shales, elastic waves travel significantly faster along the bedding plane than the bedding normal direction.…”

Mechanisms for CO2 Sequestration in Geological Formations and Enhanced Gas Recovery

“…Nuttal et al [87] estimated the CO2 sequestration capacity in the organic-rich Devonian black shales in the Big Sandy gas field of Eastern Kentucky to be about 6.8 Gt. Gas sorption behaviour of Muderong shales in Australia were investigated by [85,86]. Their experiments indicate significant CO2 storage capacity in the shale formations.…”

“…Their experiments indicate significant CO2 storage capacity in the shale formations. For Belgium black shale, Khosrokhavar et al [62] investigated the sorption capacity for CO2 is about 7.9 kg/ton of the formation, while Busch et al [85] showed the sorption capacity for CO 2 is 5.5 kg/ton of the formation for dry samples. These results are consistent with those by Weniger [67], discussed previously regarding the gas sorption behavior of CH4 and CO2 in coals and shales in the Parana Basin, Brazil.…”