A dynamic evolution model of coal permeability during enhanced coalbed methane recovery by N2 injection: experimental observations and numerical simulation
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DOI: 10.1039/d1ra02605d
Abstract: A dynamic evolution model of coal permeability during CH4 displacement by N2 injection was proposed, considering the combined effects of matrix swelling/shrinkage and effective stress, for providing a reference on N2-ECBM. read more here.
Keywords: model coal; coal permeability; evolution model; dynamic evolution ... See more keywords
Polyene model of coal structure and metamorphism
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DOI: 10.3103/s1068364x17010021
Abstract: Eight coal ranks (G, GZhO, GZh, K, KO, KS, and T) are investigated by IR spectroscopy in the range between 1800 and 650 cm–1, with polynomial decomposition of the spectra obtained. The similarities and differences… read more here.
Keywords: structure metamorphism; metamorphism; model coal; polyene model ... See more keywords