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Elastic Anisotropy Soft Porosity Model for Sands and Shales
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
Summary
We have developed an anisotropic elastic rock physics model which models a continuum between sands and shales. The model uses both the joint SCA/DEM model and the Hudson model to add stiff and aligned soft pores in the rock frame. The model adjusts the aspect ratio and quantity of the soft pores to control the anisotropy of the rock. The initial stiffness of the rock is controlled by the biconnected porosity point (used by the SCA/DEM model) of the rock frame allowing both sands and shales to be modelled. The model has been tested against sand and shale data from well logs in the Barents Sea, where an accurate fit between the model and well log data was obtained.
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