Macromolecular transformations for tectonically-deformed high volatile bituminous via HRTEM and XRD analyses

Coalbed methane reservoir properties of tectonically deformed coals (TDCs) vary greatly in comparison to unaltered coals. These differences are attributed, in part, to their macromolecular transformations. The structure of different TDCs at various distances from a fault plane was evaluated using image analysis of aromatic fringes from HRTEM micrographs, and from XRD data. The distribution of fringe length, orientation, stacking, and curvature,...