Stress-Dependent Fractal Evolution and Compressibility of Multiscale Pore-Fracture Systems in Coals with Different Ranks
Understanding the stress sensitivity of multiscale pore fracture structures (PFS) in coals with different ranks is critical for evaluating coalbed methane (CBM) reservoir behavior. In this study, low-rank and high-rank coals were subjected to effective confining pressure loading–unloading tests under constant pore pres...