A lattice-based approach for hydraulic fracturing simulation in jointed materials

David Grégoire (1) , Vincent Lefort (1) , Olivier Nouailletas (1) , Gilles Pijaudier-Cabot (1)

1 LFCR - Laboratoire des Fluides Complexes et leurs Réservoirs

Characterizing the path of a hydraulic fracture in a heterogeneous/jointed medium is one of the challenges of current research on hydraulic fracturing. We present here a 2D lattice hydro-mechanical model for this purpose. Natural joints are represented by introducing elements with a new plastic-damage behaviour. The action of the fluid pressure on the skeleton is represented by using Biot’s theory. The interactions of cracks on the fluid flow are represented by considering a Poisueille’s flow between two parallel plates. Numerical coupling is achieved with a staggered coupling scheme.

Mots clés: Lattice analysis; Fracture; Fluid/structure interaction; Jointed material

Domaines: Mécanique des structures [physics.class-ph]

David Grégoire, Vincent Lefort, Olivier Nouailletas, Gilles Pijaudier-Cabot. A lattice-based approach for hydraulic fracturing simulation in jointed materials. 13e colloque national en calcul des structures, Université Paris-Saclay, May 2017, Giens, Var, France. ⟨hal-01899293⟩