Abstract
Abstract Cavity completion stimulations have been trialled at two adjacent sites in the Bowen Basin, Queensland, Australia. The trials were conducted under thoroughly characterised reservoir conditions and were comprehensively monitored using multiple observation wells. Integrated with the trials were laboratory investigations of the fundamental mechanisms of cavitation in similar coals. These studies primarily comprised cavitation of coal blocks under full scale stress and pore pressure conditions, and numerical modeling of both the field and laboratory processes using both continuum and discontinuum models. Stimulation mechanisms are discussed in terms of two-phase flow, coupled mechanical - fluid flow in fractures, and coal failure under dynamic conditions.
Published Version
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