Understanding the sequestration and transport of natural gas in nanometer-scale pores is important for efficient extraction from unconventional reservoirs, which supply an increasing portion of total gas production worldwide. The authors use high-field NMR to study the adsorption characteristics of supercritical methane in Vycor nanoporous glass, as a model system. They measure the gas storage potential in the nanopores over a wide pressure range and show how free and adsorbed gas can be separately quantified---vital input for recovery strategies for real deposits.
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