MODSIM 3DXCONFERENCE Improve_Real-World_Performance_with_Structures_Simulation
I am pleased to invite you to attend my talk in the Global 3DEXPERIENCE Modeling & Simulation Virtual Conference, on November 17-18, 2020.
Register now
https://events.3ds.com/global-3dexperience-modeling-simulation-virtual-conference
My presentation
This presentation is about a piece of research work that I conducted as a postdoctoral fellow at the Bureau of Economic Geology at The University of Texas at Austin. I will talk about a mechanism for the subsurface fault slip as a result of surface petroleum industry operations. A visual flowchart of this study, as shown in the figure, is described as: (1) interpretation of the prone fault for reactivation based on the earthquake hypocenters; (2) building an Abaqus poroelastic model based on the interpreted fault, stratigraphy, in-situ stress and geomechanical properties, and well data; and (3) running the simulations on the Texas Advanced Computing Center (TACC) clusters, post-processing, and plotting results. Briefly, these results demonstrate the capability of a poroelastic model to simulate a causative mechanism for fault reactivation in a field scale problem: pore-pressure increase fully coupled with poroelastic stress changes over the fault core, leading to the reduction of the fault frictional strength up to a threshold determined by the Mohr-Coulomb failure criterion. For further details, please refer to the abstract after the figure.
Abstract
Man-made earthquake footprint has recently expanded to several states in the US due to petroleum industry operations. The spatial and temporal correlation of these earthquakes with hydrocarbon production and associated injection of produced water into reservoir units has promoted further scientific studies on their causative mechanisms. These earthquakes within the upper brittle crust occur along preexisting geological faults which become unstable due to the combined effects of production from unconventional reservoirs and saltwater disposal into adjacent layers. This combined effect results from poroelastic stress changes can be captured through geomechanical models that fully couple fluid flow and poroelastic response. To assess the potential for fault reactivation in response to wastewater injection and hydrocarbon production, we conducted fully coupled 3D poroelastic finite element simulations in Abaqus for a site-specific induced seismicity case in Texas. Conducting this research was feasible only via parallel-processing option and direct solver in Abaqus due to the computational demand and nonlinearity of the problem in this work. The possibility to work with Abaqus on computational clusters at Texas Advanced Computing Center was essential because of the necessity to conduct simulations for a parameter space in order to address uncertainties in the hydrogeological description of subsurface formations.
Presentation Replay
I will be happy to answer your questions here as well.
@MH
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