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estimate the permeability of coal sample. The pore size distribution, porosity, and permeability of coal before and after …The method of improving permeability of coal seams by freeze-fracturing is presented to accelerate the diffusion of … nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM), and a permeability-calculation model was employed to …
Persistent link: https://www.econbiz.de/10012652419
estimate the permeability of coal sample. The pore size distribution, porosity, and permeability of coal before and after …The method of improving permeability of coal seams by freeze-fracturing is presented to accelerate the diffusion of … nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM), and a permeability-calculation model was employed to …
Persistent link: https://www.econbiz.de/10012195422