Yong Li

TL;DR: In this article, the pore distribution and mechanical properties of coal were analyzed using both scanning electron microscopy (SEM) and atomic force microscopy (AFM) observations.

TL;DR: In this article, three series of coal samples collected from three key CBM development basins with graded vitrinite reflectance values (R o ), the eastern Junggar basin ( R o of approximately 0.5%), eastern Ordos basin and southern Qinshui basin (R O of approximately 3.0%), were systematically characterized by optical observations, low-temperature nitrogen adsorption/desorption, and nuclear magnetic resonance (NMR) methods.

TL;DR: A detailed experimental program combining X-ray diffraction (XRD), total organic carbon (TOC) analysis and Rock-Eval pyrolysis, and pore structure characterization by field emission scanning electron microscopy (FE-SEM), and low temperature nitrogen and carbon dioxide adsorption/desorption analysis were conducted on 16 continuously sampled shale cores from the east margin of the Ordos Basin, China as discussed by the authors.

TL;DR: In this article, the authors analyzed the effect of different factors on coal seam No. 3 and their influence on coalbed methane (CBM) recovery in the Qinshui Basin, China.

TL;DR: In this article, the authors investigated the nature of helium permeability change on 14 coal cores under a varying effective stress from 4 to 12 MPa in laboratory, and found that the gas permeability of coals varies with effective stress increase, matrix shrinkage/swelling due to gas desorption/adsorption, gas slippage and other factors.