Abstract
The best recovery of hydrocarbons from unconventional reservoirs occurs in zones optimal for horizontal drilling and hydraulic fracturing and in locations with high gas concentration. Characterization of the relationship between important rock properties, such as mineralogy, rock fabric, and fluid saturation with elastic properties of the Haynesville shale will improve our ability to identify these optimal locations from seismic and well log data. In this work, the Haynesville is modeled using the anisotropic differential effective medium (DEM) model, which allows for parameterization of pore and grain aspect ratios, mineral composition, and load bearing matrix. We divided the Haynesville into two separate rock types: a calcite-rich rock type and a clayand silica-rich rock type. Rock typing provided for greater sensitivity of the rock type models to mineral content, which provided an improved porosity versus stiffness and combined porosity plus kerogen versus stiffness trend for the calcite-rich rock type.
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