Reservoir stress path and induced seismic anisotropy: results from linking coupled fluid-flow/geomechanical simulation with seismic modelling

• DOI: 10.1007/s12182-016-0126-1
• Publication Date: 2016-11-01T04:00:55Z
• Authors: D. A. Angus; Q. J. Fisher; J. M. Segura; J. P. Verdon; J.-M. Kendall; M. Dutko; A. J. L. Crook
• Keywords: Seismic anisotropy; Stress field; Hydrostatic equilibrium

We present a workflow linking coupled fluid-flow and geomechanical simulation with seismic modelling to predict anisotropy induced by non-hydrostatic stress changes. generate models from simulations examine the relationship between reservoir geometry, path anisotropy. The results indicate that geometry influences evolution of stress, which leads stress-induced Although is high for small reservoir, effect arching ability side-burden support excess load limit overall change in effective hence For extensive are high. elongate reservoirs experience significant compaction, where inefficiency developed cannot load. displays asymmetry, developing predominantly along long-edge reservoir. show link parameters complex, anisotropic symmetry controlled not only model but also nonlinear rock physics used. Nevertheless, has been changes, allowing field observations be linked models.