The background worry impacts the time of the slip front outpacing new water diffusion side together with subsequent dimensions development of slip town (Contour 3d)
o = 0.6, (a-b) = ?0.002, and dc = 10 ?m. These values fall within the range of frictional parameters measured in laboratory tests on fault samples collected in carbonate rocks (Carpenter et al., 2014 , 2016 ). ?o is the friction coefficient at a reference slip velocity (vo). The parameter a quantifies the direct effect of a change in slip velocity. The parameter b describes the effect of the state variable (here we use the “aging law”; Dieterich, 1979 ). The characteristic slip distance, dc, governs the evolution of the state variable (?). For fault models with constant friction, we assume a static value (?s) of 0.6.
step three.dos Acting Show
Figures 2c and 2d show how the development of the fluid pressure along the fault varies as a function of the permeability enhancement factor and the associated hydraulic aperture. Models indicate that the magnitude and distribution of the steady state overpressure as well as the size of the pressurized area depend strongly on the permeability change. For a constant permeability model (case k/ko = 1), the pressure perturbation is poorly prozerounced. The highest pressure and sharpest pressure gradients are located close to the injection. Lees verder