Projecting seismicity induced by complex alterations of underground stresses with applications to geothermal systems.

ABSTRACT: Seismicity associated with subsurface operations is a major societal concern. It is therefore critical to improve predictions of the induced seismic hazard. Current statistical approaches account for the physics of pore pressure increase only. Here, we present a novel mathematical model that generalises adopted statistics for use in arbitrary injection/production protocols and applies to arbitrary physical processes. In our model, seismicity is driven by a normalised integral over the spatial reservoir volume of induced variations in frictional Coulomb stress, which-combined with the seismogenic index-provides a dimensionless proxy of the induced seismic hazard. Our model incorporates the classical pressure diffusion based and poroelastic seismogenic index models as special cases. Applying

SUBMITTER: Cacace M 

PROVIDER: S-EPMC8651648 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature