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FRACSEIS

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Hydro fracture in the laboratory matching diagnostic seismic signals to fractur...

Hydro fracture in the laboratory matching diagnostic seismic signals to fracture networks via new rock physics experiments Fluids are a ubiquitous element of the Earth system, whether shallow aquifers, deeper crustal fluids (meteoric water, hydrothermal fluid and hydrocarbons), or deep fluids implicated in subduction zones via dehydration reactions. H... ver más

28/02/2017

UoP

100K€

Presupuesto del proyecto: 100K€

Líder del proyecto

UNIVERSITY OF PORTSMOUTH HIGHER EDUCATION COR... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2017-02-28 No tenemos la información de la convocatoria

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1 Participantes

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Líder del proyecto

UNIVERSITY OF PORTSMOUTH HIGHER EDUCATION COR... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 100K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Fluids are a ubiquitous element of the Earth system, whether shallow aquifers, deeper crustal fluids (meteoric water, hydrothermal fluid and hydrocarbons), or deep fluids implicated in subduction zones via dehydration reactions. However, our understanding of the stresses imparted by fluids in the shallow crust (2 km) and how these over-pressurize the surrounding rock via the process of hydrofracture is not yet fully understood, especially in anisotropic rocks. In recent years, this topic has been the subject of much scientific interest in the light of the new opportunities surrounding the production of natural gas via shale reservoirs that must necessarily be fractured in order to release the gas in a controversial process known as ‘fracking’. This process has attracted considerable attention from the media, policy makers and the engineering community due to the challenges it poses. The scenario above is further complicated by the fact that shale rock layers are anisotropic in nature, both in strength and in terms of material physical properties, making any assessment of how and where fracture propagate difficult. In addition, the use of active pore fluids (via temperature or acidity level) adds yet another factor to the process, especially from an engineering perspective. To investigate these issues, the FRACSEIS project aims to replicate the process in an laboratory environment that will allow stress, fluid pressure and temperature to be controlled. Measurements of the resulting seismicity (known as acoustic emission, AE) will then be made to generate an advanced geophysical image of the process for various types of shale rock, and different environmental conditions. Specifically the methods of AE location, P-wave tomography, and post-test X-ray computed tomography will all be employed in order to better understand how the fracture patterns evolve in space and time and with respect to the anisotropy of the rock and the imposed environmental conditions.

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