An Integrated Approach to Incorporate Intraplate Stress, Lithospheric Memory and Slip Tendency Into Models for Fault Zone Permeability
J.D. Van Wees2, A. Gartrell3, F. Mulders2,
S.A.P.L. Cloetingh4 (1)
In the past decade, a variety of methodologies have been
developed for the characterization of fault zone permeability. Analysis
techniques estimate fault permeability parameters from Shale Gauge Ratio (SGR)
and fault zone thickness. However, as recently shown for the
Based on the insights from this case study we developed an integrative model for qualititatively assessing formation and opening of fractures, which take as input parameters: (1) evolution of the stress field, (2) fault slip tendency and fault displacement and (3) fault size, shape and linkage. It is demonstrated that the integration of these factors can easily be incorporated in the standard workflow of building 3D geological models for exploration and production. Predicted fault fracture density magnitudes are qualitative and subject to many uncertainties, which will be discussed. Of particular importance is knowledge on the stress history and lithospheric memory (e.g. pre-existing fault size), making particular fault zones more prone to fault reactivation and fault fracturization than others.