Full text loading...
-
A Comparison of Seismicity-Based Permeability Characterization Methods
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
Seismicity-based permeability characterization uses the distribution of microseismic events associated with subsurface fluid injection (e.g. hydraulic fracturing) to estimate reservoir bulk permeability at the reservoir scale. While existing methodologies mostly originate from the linear pore pressure diffusion solution for a low frequency range of the slow wave propagation equation, the novel methodology presented in this paper is based on coupling the radial pressure diffusion equation with a Mohr-Coulomb shear failure criterion taking into account geomechanical data. Evaluating the spatio-temporal dynamics of induced microseismicity therefore allows us to calculate the permeability as a function of the pressure differential that is needed for rock failure and the subsequent occurrence of microseismicity.