The parallel performance and efficiency of boundary element methods in the solution of inelastic problems are investigated. A parallel algorithm based on the so-called initial stress scheme for inelastic analysis is developed and implemented in BEMGEO (Boundary Element Method program for GEOmechanics applications). Numerical examples solved on an SP2 of 34 thin nodes are presented which highlig...

Reservoir depletion and subsequent CO2 injection into the depleted geological reservoir induce stress changes that may mechanically damage top seal and wells, or trigger existing faults, creating the leakage pathways for CO2 escape from the reservoir. The role of geomechanics is to assess the mechanical impact of stress changes on seals, wells and faults. Since many hydrocarbon fields are geome...

Coupled multiphase flow and geomechanics models are computationally costly and complex to implement. In order to take advantage of petascale and future exascale computing power, parallel domain decomposition offers an opportunity for decoupling realistic subsurface problems. The basic idea is to reduce the complexity of these multiphysics problems by applying the coupling only in those domains ...

A framework alternative to that of classical slope stability analysis is developed, wherein the soil mass is treated as a continuum and in-situ soil stresses and strengths are computed accurately using inelastic "nite element methods with general constitutive models. Within this framework, two alternative methods of stability analysis are presented. In the "rst, the strength characteristics of ...

Coupling between fluid flow and mechanical deformation in porous media plays a critical role in geologic storage of CO2. One of the key issues in simulation of CO2 sequestration is the ability to describe the mechanical and hydraulic behavior of faults, and the influence of the stress tensor and change in pressure on fault slip. Here, we present a new computational approach to model coupled mul...

Naturally fractured reservoirs have been a source of challenging issues with regard to field development, well stability, drilling, and enhanced oil recovery, as connected fracture system can totally dominate the flow patterns. Because high degree heterogeneity in characteristics reservoir geomechanics, several mathematical, numerical discretization methods are proposed predict hydrodynamics be...

The concept of virtual reality is a very powerful tool for enhancing the human perception of complex threedimensional information. The field of geomechanics is predestined for such an application since we are not only dealing with complex 3-D information about excavation geometries and geological features but also may be interested in displaying results of numerical simulations which may by the...

The purpose of this paper is to analyse the development and the evolution of the fracture process zone during fracture and damage in quasi-brittle materials. A model taking into account the material details at the mesoscale is used to describe the failure process at the scale of the heterogeneities. This model is used to compute histograms of the relative distances between damaged points. These...

In this paper the analytical solutions for radial consolidation that include time dependent surcharge loading and vacuum pressure are proposed, whilst also considering the impact of the parabolic variation of permeability in the smear zone. The use of the spectral method for multilayered soil consolidation is introduced and verified. The Elliptical Cavity Expansion Theory is used to predict the...