An experimental study of true triaxial stress-induced deformation and permeability anisotropy in sandstones
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Determination of stress-induced anisotropy of reservoir mechanical properties is essential for a number of areas that can be collectively termed as drilling risk reduction and optimization of well and reservoir productivity. Borehole stability, well completions, hydraulic fracturing, and production operations require correct analysis of deformational behavior under a general stress state (σ_1≥σ_2≥σ_3). Current attempts to capture the effect of stress state on rock deformational characteristics typically consist of conventional triaxial testing of core samples. However, there still remains an ...