... were studied in quartz nanopores under a geological condition of 343 K and 15 MPa via molecular dynamics simulations. The results show that adsorption onto the pore wall occurred for all three gases. Using competitive adsorption analyses, we find that the quartz pore wall likely prefers to adsorb CH 4...

... seasonal supply and CO 2 reduction. The depleted shale gas reservoir presents a favorable site due to its abundance of nanopores, which inherently prevents leakage and ensures long-term storage. However, the coexistence of H 2 /CO 2 with the original water in the nanopore results in the formation...

... temperature, K ; k is the Boltzmann constant, J / K . To take the effects of the mixed wettability in a single nanopore into account, the parameters affected by the type of nanopore surface should be properly treated. The arithmetic average is applied: (2) l s = ω { τ b τ...

.... Then a simplified pillar-layer model was used to study CH 4 adsorption behavior and competitive adsorption effect between CO 2 and CH 4 , using grand canonical Monte Carlo (GCMC) method. Results indicate that nanopores with good connectivity widely exist in OM, offering important storage space for absorbed shale...

... Poisson's ratio. There are five types of pores in shale: organic nanopores, pores of clay minerals, intraparticle pores of matrix minerals, intragranular pores from microfossils, and microfractures, and the chief are organic nanopores and pores of clay minerals. Nanopores with pore diameter less than 50nm...