With the recent boom in US shale gas production, optimal development of these assets has become a topic of significant interest. In addition to the complex physics typically associated with shale plays, field development optimization can be a challenging problem itself when binary, integer and continuous variables are concurrently present. For complex problems of this nature, it is appropriate ...

We validate a coupled flow-geomechanics simulator for gas hydrate deposits, named T+M A M , performing two meter-scale laboratory experiments of hydrates production by depressurization replicating the deposit in Ulleung Basin, East Sea, South Korea. The first experiment with sand-only specimen is 1D 1 m-scale test based on excess method, which represents grain coating growth. On other hand, sec...

In this paper we study solving iteratively the coupling of flow and mechanics. We demonstrate the stability and convergence of two widely used schemes: the undrained split method and the fixed stress split method. To our knowledge this is the first time that such results have been rigorously obtained and published in the scientific literature. In addition, we propose a new stress split method, ...

This paper briefly reports the GeoMFree , a meshfree / meshless software package designed for analyzing the problems of large deformations and crack propagations of rock and soil masses in geotechnics. The GeoMFree is developed based on the meshfree RPIM, and accelerated by exploiting the parallel computing on multi-core CPU and many-core GPU. The GeoMFree is currently being under intensive dev...

In geomechanics there are problems whose investigations lead to solving model problems based on variational formulations. Such problems are frequently formulated by variational inequalities as they physically describe the principle of virtual work in its inequality form. In the first part of the contribution the algorithm for the numerical solution of the discussed variational inequality proble...

Abstract Geomechanical analysis is essential to assess the productivity forecast of cyclic steam simulation (CSS) operations in heavy oil reservoirs. The high-temperature and high-pressure fluid injection, as well depletion unconsolidated poorly cemented porous media during CSS, may generate a relevant stress–strain response at levels that can lead irreversible changes reservoir permeability. T...

Abstract The type of subgrade a railroad foundation is vital to the overall performance track structure. With train speed and tonnage increase, as well environmental changes, evaluation influence are even more paramount in structure performance. A geomechanics classification for proposed coupling stiffness (resilient modulus) permanent deformation behaviour evaluated by means repeated triaxial ...