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1. An approach to hydraulic fracture in geomaterials through a porous brittle damage material model

Author

Gianluca Caramiello, Andrea Montanino, Gabriele Della Vecchia, and Anna Pandolfi

Subjects
Brittle damage, Recursive faulting, Poromechanics, Multiscale simulation, Hydraulic fracturing, Mechanics of engineering. Applied mechanics, TA349-359, Systems engineering, TA168
Abstract

Abstract A coupled hydromechanical code based on a distributed brittle damage material model has been developed in order to simulate hydraulic fracturing processes. As specific feature, the code does not assume the development of a discrete number of sharp cracks but considers a diffused damage that takes place under overall confinement of the system. The code is validated against a laboratory test reproducing the local effects of a hydraulic fracturing procedure. The numerical model of the laboratory test is then used to conduct a parametric analysis where the influence of the principal hydromechanical parameters on the hydraulic fracturing performance is assessed. Finally, the code is applied to simulate multiple hydraulic fracturing interventions in a large scale shale reservoir. In all applications considered, the model shows a good predictive capability in terms of damage extension.

Published
2018
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2. An approach to hydraulic fracture in geomaterials through a porous brittle damage material model

Author

Gabriele Della Vecchia, Anna Pandolfi, Andrea Montanino, Gianluca Caramiello, Caramiello, G., Montanino, Andrea, Della Vecchia, G., and Pandolfi, A.

Subjects
Parametric analysis, Scale (ratio), Poromechanic, Poromechanics, Predictive capability, 02 engineering and technology, Recursive faulting, 020501 mining & metallurgy, lcsh:TA168, Hydraulic fracturing, Brittleness, Geotechnical engineering, Porosity, Engineering (miscellaneous), Brittle damage, Hydraulic fracturing, Multiscale simulation, Poromechanics, Recursive faulting, Applied Mathematics, Multiscale simulation, Computer Science Applications, Brittle damage, Laboratory test, 0205 materials engineering, lcsh:Systems engineering, Modeling and Simulation, Fracture (geology), lcsh:Mechanics of engineering. Applied mechanics, lcsh:TA349-359, Geology
Abstract

A coupled hydromechanical code based on a distributed brittle damage material model has been developed in order to simulate hydraulic fracturing processes. As specific feature, the code does not assume the development of a discrete number of sharp cracks but considers a diffused damage that takes place under overall confinement of the system. The code is validated against a laboratory test reproducing the local effects of a hydraulic fracturing procedure. The numerical model of the laboratory test is then used to conduct a parametric analysis where the influence of the principal hydromechanical parameters on the hydraulic fracturing performance is assessed. Finally, the code is applied to simulate multiple hydraulic fracturing interventions in a large scale shale reservoir. In all applications considered, the model shows a good predictive capability in terms of damage extension.

Published
2018

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