Inversion in the permeability evolution of deforming Westerly granite near the brittle-ductile transition.

ABSTRACT: Fluid flow through crustal rocks is controlled by permeability. Underground fluid flow is crucial in many geotechnical endeavors, such as CO₂ sequestration, geothermal energy, and oil and gas recovery. Pervasive fluid flow and pore fluid pressure control the strength of a rock and affect seismicity in tectonic and geotechnical settings. Despite its relevance, the evolution of permeability with changing temperature and during deformation remains elusive. In this study, the permeability of Westerly granite at an effective pressure of 100 MPa was measured under conditions near its brittle-ductile transition, between 650 °C and 850 °C, with a strain rate on the order of 2·10^-6 s^-1. To capture the evolution of permeability with increasing axial strain, the sampl

SUBMITTER: Petrini C 

PROVIDER: S-EPMC8674356 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature