iTOUGH2-EOS7C model used to analyze multiphase flow and hydromechanical coupling in underpressured shale at the Bruce Nuclear Site, Ontario, Canada
Description
Using iTOUGH2-EOS7C, a simple 1-D model was developed to represent a site in Ontario, Canada
which is being considered for nuclear waste disposal. The site exhibits substantially underpressured
water and potential evidence for gas phase methane within a thick section of sedimentary rocks. To
investigate possible mechanisms for the development of the underpressure in a multiphase system,
hydromechanical coupling during a glacial cycle was simulated with and without gas phase methane
present. Results indicate that, while the gas dampened the effects of the loading cycle, it did not
preclude underpressure development. This USGS data release contains all of the input and output
files for the simulations described in the associated journal article (https://doi.org/10.1029/2019GL083027x).