Browsing Civil and Environmental Engineering by Author "Gracie, Robert"
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Enriched mixed finite element models for dynamic analysis of continuous and fractured porous media
Komijani, Mohammad; Gracie, Robert (Elsevier, 2019-01-01)Enriched Finite Element Models are presented to more accurately investigate the transient and wave propagation responses of continuous and fractured porous media based on mixture theory. Firstly, the Generalized Finite ... -
A non-local plasticity model of stimulated volume evolution during hydraulic fracturing
Sarvaramini, Erfan; Dusseault, Maurice B.; Komijani, Mohammad; Gracie, Robert (Elsevier, 2018-10-02)Hydraulic fracturing in naturally fractured rocks often leads to the creation of a stimulated zone in which the target rock formation is deformed and fractured by the reactivation and shear dilation of natural fractures ... -
Numerical considerations for the simulation of proppant transport through fractures
Rivas, Endrina; Gracie, Robert (Elsevier, 2019-09)Injection of a proppant slurry (fluid mixed with granular material) into a reservoir to keep fractures open is a common procedure in hydraulic fracturing treatments. This article presents the numerical methodology for ... -
Simulation of Induced Acoustic Emission in Fractured Porous Media
Komijani, Mohammad; Gracie, Robert; Sarvaramini, Erfan (Elsevier, 2019-04-01)Acoustic/microseismic Emissions (AE) in naturally fractured porous media are the result of local instability along internal interfaces and the sudden release of strain energy stored in the rock matrix. This rapid release ...