Artículos de publicaciones periódicas

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Browsing Artículos de publicaciones periódicas by Author "Gallardo, Felipe Eusebio"

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    Evaluación reológica de fluidos de perforación base agua con nanosílice
    (2018-07) Gallardo, Felipe Eusebio; Erdmann, Eleonora; Abalos, Roxana
    "La creciente demanda hidrocarburífera ha llevado al estudio y producción de reservorios no convencionales de tipo shale en Argentina y el mundo. Este tipo de formaciones sedimentarias de estructura laminar, están conformadas por partículas consolidadas del tamaño de las arcillas, poseen nanoporos y baja permeabilidad. Durante la perforación del shale con WBM se debe garantizar la estabilidad de las paredes del pozo controlando la inhibición de las arcillas presentes y el incremento de la presión poral ocasionado por el ingreso de fluido a la formación. Para este último propósito, en este trabajo, se seleccionó nanosílice de 12 nm, la cual obtura los poros del shale que tienen un tamaño promedio de 30 nm. Se busca de esta forma reducir el ingreso de fluido a la formación, la presión poral, la permeabilidad y minimizar la interacción roca-fluido."
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    Functional characterization on colloidal suspensions containing xanthan gum (XGD) and polyanionic cellulose (PAC) used in drilling fluids for a shale formation
    (2016) Villada, Yurany; Gallardo, Felipe Eusebio; Erdmann, Eleonora; Casis, Natalia; Olivares, Laura; Estenoz, Diana
    "Drilling fluids are employed in the operation of hydrocarbon exploitation. Two kinds of drilling fluids are commonly used: water based muds and oil based muds. The oil based muds are characterized by their high performance in unconventional reservoirs due to the very low interaction with the reactive formation. Their environmental impact promotes the design of water based muds that present low toxicity. In this paper a water based mud for shale formation with similar rheological characteristics to the oil based mud used in the oil industry of Argentina was designed and the effect of xanthan gum and polyanionic cellulose on the main functional characteristics was studied. Rheometric analysis showed a shear-thinning behavior with notable effect on the concentration of polymers. After dynamic aging test, fluids with composition of PAC=8.00 g/L and XGD =3.00 g/L exhibited rheological properties very close to oil base mud. Structural changes were assessed from optical microscopy and scanning electron microscopy. Particles agglomeration due to the presence of polymers was observed. Furthermore, mud filtration essays allowed to evaluate the performance of PAC as control agent. The Carreau model and statistical analysis were used to determine rheological parameters."