... on the volumetric method are prone to error when applied to characterize sorption kinetics in shale-gas systems due to limited adsorption capacity and finer pores of shale matrix. An innovated laboratory apparatus and measurement procedures have been developed for accurate determination of the relatively small...

..., and adsorption capacity on gas transport within the ultratight formation. Further, the model is utilized to study gas transport and production from Barnett, Marcellus, and New Albany shales. The results show that surface diffusion significantly contributes to gas production in shales with high surface...

.... The thermodynamic conditions, including pressure and temperature, also had a strong impact on asphaltene stability and pore plugging. When undergoing the CO 2 adsorption experiments, it was found that increasing the CO 2 injection pressure resulted in an increase in adsorption capacity to a certain limit beyond...

... complex reservoir Upstream Oil & Gas shale gas pore structure international journal saturation society of petroleum engineers relative humidity isotherm adsorption capacity kerogen hysteresis loop desorption isotherm pore adsorption desorption isotherm shale sample adsorption isotherm...

... the injection concentration during slug injection, indicating the existence of an adsorption capacity. Experiments with a variety of nanoparticles and lithologies yield a wide range of adsorption capacities (from 10 −7 to 10 −2 g nanoparticle/g porous medium) and a wide range of proportions of reversible...

... isotherm ch 4 particle fraction 0 size fraction experiment diffusion matrix block complex reservoir adsorption capacity coal bed methane diameter coal sample co 2 fraction diffusion coefficient coalbed methane equation isotherm upstream oil & gas coal particle concentration...