contact with a rock sample for two months. The modifications produced in the porosity and pore size distribution have been … virtual models of pores that reproduce the experimental porosity. By analysing the results, a drastic modification in the …

compressibility, porosity and net to gross (NTG) on the amount of total field oil production (FOPT), total field gas production (FGPT …. By increasing the amount of porosity and NTG, the amount of FOPT, FGPT, and FGOR are raised dramatically, and it is …

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 …