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in creator/contributor: "Novali, Fabrizio"  
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Reservoir monitoring and characterization using satellite geodetic data: Interferometric Synthetic Aperture Radar observations from the Krechba field, Algeria

Description: Deformation in the material overlying an active reservoir is used to monitor pressure change at depth. A sequence of pressure field estimates, eleven in all, allow us to construct a measure of diffusive travel time throughout the reservoir. The dense distribution of travel time values means that we can construct an exactly linear inverse problem for reservoir flow properties. Application to Interferometric Synthetic Aperture Radar (InSAR) data gathered over a CO{sub 2} injection in Algeria reve… more
Date: May 1, 2008
Creator: Vasco, D. W.; Ferretti, Alessandro & Novali, Fabrizio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fluid pressure arrival time tomography: Estimation and assessment in the presence of inequality constraints, with an application to a producing gas field at Krechba, Algeria

Description: Deformation in the overburden proves useful in deducing spatial and temporal changes in the volume of a producing reservoir. Based upon these changes we estimate diffusive travel times associated with the transient flow due to production, and then, as the solution of a linear inverse problem, the effective permeability of the reservoir. An advantage an approach based upon travel times, as opposed to one based upon the amplitude of surface deformation, is that it is much less sensitive to the ex… more
Date: April 1, 2010
Creator: Rucci, Alessio; Vasco, D. W. & Novali, Fabrizio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimating permeability from quasi-static deformation: Temporal variations and arrival time inversion

Description: Transient pressure variations within a reservoir can be treated as a propagating front and analyzed using an asymptotic formulation. From this perspective one can define a pressure 'arrival time' and formulate solutions along trajectories, in the manner of ray theory. We combine this methodology and a technique for mapping overburden deformation into reservoir volume change as a means to estimate reservoir flow properties, such as permeability. Given the entire 'travel time' or phase field, obt… more
Date: May 1, 2008
Creator: Vasco, D. W.; Ferretti, Alessandro & Novali, Fabrizio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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