Modeling And Simulation Of Induced Seismicity By Hydraulic Fracturing

Abstract

We propose a novel model, a fully coupled hydro-mechanical one for studding the induced seismicity during hydraulic fracturing that merge the black oil flow with the phase field theory. Our solution of problem is sequential, so first we solve for hydraulic fracturing aimed by phase field theory. This last one take into account the interfacial damage between the inclusions and the matrix; (b) modeling fluid flow within both matrix cracks and interfacial cracks. After that we solve for the flow simulation of black oil model in two different way like we will see below. The phase fields model we use for the numerical simulation of hydraulic fracturing seems to be an accurate and adequate method for evaluating the degree of induced seismicity. Numerical simulations are performed in both cases: first when the reservoir is fully filled with water and second when the reservoir is filled with another phase, the black-oil one. We coded our algorithm in C++ and MATLAB and using AD-GPRS software in 2D and 3D. The damages of structures and buildings in the oar study zone might be as a result of these minor earthquakes during hydraulic fracturing. But we are not sure of this until we have the lithology of the upper zone between reservoir and the surface and in what conditions of water partially/variably saturated is this zone.