.... Inequalities constrain the inversion, under the assumption that the fluid production only results in pore volume decreases within the reservoir. The formulation has been applied to satellite-based estimates of deformation in the material overlying a thin gas production zone at the Krechba field in Algeria...

... moderately different from water. The injection pressure is roughly 120 bars , resulting in a density greater than 0.85 g / cm 3 . In the study region, the reservoir depth does not vary significantly, and density differences do not affect flow. The Krechba field in Algeria...

... shown in the figure. In this section, we describe an application of the methodology to range-change data associated with C O 2 injection in the Krechba field, Algeria. The Krechba, Teg, and Reg are gas fields distributed along a north-northwest-trending anticline. The producing...

... into the aquifer leg of the gas producing Krechba Field in central Algeria ( Figure 1 ) for long-term storage as a greenhouse-gas reduction initiative as part of the overall In Salah Gas (ISG) development project. The site has been identified by the Carbon Sequestration Leadership Forum (CSLF) as one of three...

...Figure 2. Stratigraphic column of the Krechba field includes the sequence stratigraphic subdivision of our interval of interests as C10.2, C20.1, and C20.4, pointed out by red arrows ( Hirst et al., 2001 ). Note that C10.2 is the injection interval. ...

... to deformation changes in the overburden. Rucci el al. (“Fluid pressure arrival time tomography: Estimation and assessment in the presence of inequality constraints, with an application to production at the Krechba Field, Algeria”) used the deformation changes to deduce spatial and temporal changes...

...Figure 2. Sequence stratigraphy of the Krechba field ( Hirst et al., 2001 ). ...

... field (Krechba Field, Algeria) to estimate permeability. The maximum uplift velocity over the field is 5 mm/year, measurably larger than the estimated measurement standard deviation of 1 mm/year. Figure 2 shows the estimated permeability trends perpendicular to the injection well, parallel...

.... McColpin G. R. Davis E. J. Marsic S. , 2010 , Model uncertainties and resolution studies with application to subsurface movement of a CO 2 injection project in the Krechba field using InSAR data : Journal of Canadian Petroleum Technology , 49 , 31 – 37 , doi: http://dx.doi.org/10.2118...

... the In Salah gas development project in the Krechba Field, central Algeria. CO 2 is injected into the aquifer leg of a 20-m thick, fractured Carboniferous sandstone reservoir at a depth of approximately 1900 m, with almost 3 million tonnes of CO 2 having been injected since start-up in 2004. Reservoir...

... properties such as permeability. In an application to interferometric synthetic aperture (InSAR) observations associated with a C O 2 injection at the Krechba field, Algeria, the authors image pressure propagation to the northwest and invert for flow properties, imaging a linear trend of high...

... microporosity signal in the tomogram. References Armitage , P. J. , R. H. Worden , D. R. Faulkner , A. C. Aplin , A. R. Butcher , and J. Iliffe , 2010 , Diagenetic and sedimentary controls on porosity in Lower Carboniferous fine-grained lithologies, Krechba field...

..., Hedberg Series , 2 , 1 – 12 . Armitage P.J. Worden R.H. Faulkner D.R. Aplin A.C. Butcher A.R. Iliffe J. 2010 . Diagenetic and sedimentary controls on porosity in Lower Carboniferous fine-grained lithologies, Krechba field, Algeria: A petrological study...

... to subsurface movement of a CO 2 injection project in the Krechba Field using InSAR data : SPE Journal , 49 , 31–37 , doi: 10.2118/138968-PA . SPEJAC 0036-1844 Flett M. Gurton R. Taggart I. , 2004 , The function of gas-water relative permeability hysteresis...

... , Experimental measurement of, and controls on, permeability and permeability anisotropy of caprocks from the CO 2 storage project at the Krechba Field, Algeria : Journal of Geophysical Research , v. 116 , B12208, doi:10.1029/2011JB008385 . Brace W.F. Walsh J.B. Frangos W.T. , 1968...

..., and then, as the solution of a linear inverse problem, the effective permeability of the reservoir. The authors apply the formulation to satellite-based estimates of deformation in the material overlying a thin gas production zone at the Krechba field in Algeria. Tetyukhina et al. present two different inversion...