InterPore2018 New Orleans

Session

Parallel 9-C

Parallel 9-C

17 May 2018, 08:30

New Orleans

109. Comparison of sequential and fully-coupled approaches for flow and geomechanics

Martin Beck (University of Stuttgart)

17/05/2018, 08:32

MS 2.11: Advances in coupled flow and geomechanical processes in fractured porous media

Oral 20 Minutes

Choosing an appropriate modelling approach for fluid flow and stress field interaction in rocks belongs to the key problems within the context of several subsurface applications such as geothermal power generation, disposal of waste water, CO$_2$ storage or hydraulic fracturing. A central issue in this respect is the question of whether the equations for flow and geomechanics are solved in a...

926. Modeling hydraulic fracturing using a vectorized 3D implementation of XFEM

Ehsan Haghighat

17/05/2018, 08:50

MS 2.11: Advances in coupled flow and geomechanical processes in fractured porous media

Oral 20 Minutes

Hydraulic fracturing is a subsurface stimulation technology that has been deployed at a massive scale in North America, and made it possible to produce hydrocarbons from low-permeability rocks, like oil shales and gas shales, which traditionally had been considered uneconomical. Despite this large-scale deployment, our understanding of the physics and controlling parameters in hydraulic...

356. Modeling fracture reactivation in a mixed dimensional setting: Friction models and numerical challenges

Runar Berge (University of Bergen)

17/05/2018, 09:08

MS 2.11: Advances in coupled flow and geomechanical processes in fractured porous media

Oral 20 Minutes

Reactivation of fractures is a strongly coupled problem involving disparate
physical processes such as fluid flow, temperature and rock deformation. We present a coupled mixed dimensional model, where the main focus is on the deformation of fractures. We will discuss numerical solutions of friction models for the reactivation of pre-existing fracture networks, and the treatment of the...

689. Modeling nonlinear diffusion in fractured rock with deformable fractures and applications to injection induced seismicity

Ryan Haagenson (University of Colorado)

17/05/2018, 09:26

MS 2.11: Advances in coupled flow and geomechanical processes in fractured porous media

Oral 20 Minutes

In many applications such as geothermal energy, geological carbon sequestration, unconventional gas recovery, and injection induced seismicity (IIS), there is a need to model flow and transport phenomena in fractured rock. In fractured rock, the hydraulic and mechanical properties of the fractures are extremely sensitive to fluid pressure and other perturbations. Although the general problem...

198. Lessons Learned from a Controlled-Injection Fault Reactivation Experiment at Mont Terri, Switzerland: Can Fault Leakage Occur, When, and For How Long?

Dr Jens T. Birkholzer (Lawrence Berkeley National Laboratory)

17/05/2018, 09:44

MS 2.19: Advances in Observation and Modeling of Coupled Flow and Deformation in Fractured Rock

Oral 20 Minutes

Understanding fault reactivation as a result of subsurface fluid injection is critical in geologic CO2 sequestration (and other geo-energy applications such as wastewater injection) because it may result in enhanced fault permeability, potentially inducing CO2 leakage from the injection zone through the overlying caprock. Faults display a complex architecture characterized by a low...

681. Modeling induced seismicity with coupled poroelasticity on discrete fracture networks with evolving hydraulic diffusivity and Mohr-Coulomb failure

Daniel Birdsell

17/05/2018, 10:02

MS 2.19: Advances in Observation and Modeling of Coupled Flow and Deformation in Fractured Rock

Oral 20 Minutes

Injection-induced seismicity (IIS) depends on pore pressure, in-situ stress state, and fault orientation; generally occurs in basement rock that contains fractures and faults; and moves away from the injection well as a nonlinear diffusion process. Therefore to numerically model IIS, a code should incorporate coupled flow and geomechanics, the presence of fractures and faults, and the...