RESUMENEste artículo presenta el desarrollo de una nueva metodología para la estimación de permeabilidades relativas, por medio del ajuste de la simulación con los resultados experimentales, obtenidos de desplazamientos en estado no-estacionario. Se muestra también el desarrollo en lenguaje Matlab, de la herramienta de simulación/optimización, que permite el ajuste automático. Seis desplazamientos de estado no-estacionario son realizados, cuatro de dos fases y dos de tres fases, la información experimental obtenida se analiza por medio del algoritmo propuesto. Los resultados obtenidos para dos fases se comparan con los del software Sendra y se encuentra que el algoritmo propuesto tiene un buen desempeño respecto a esta herramienta comercial. Los resultados obtenidos para los casos de tres fases, muestran que el algoritmo logra estimar efectivamente las permeabilidades relativas que producen el ajuste histórico; se encuentra que hay diferencias en las curvas estimadas para los sistemas bifásicos, respecto a los trifásicos.Palabras clave: Permeabilidades Relativas tres fases, Simulación de experimentos, Optimización numérica, Ajuste histórico. EXPERIMENTAL METHODOLOGY FOR TWO AND THREE PHASE RELATIVE PERMEABILITY ESTIMATION THROUGH HISTORY MATCH ABSTRACTThis paper presents the development of a new methodology for relative permeabilities estimation, through the match of the simulation results with the experimental data, obtained from unsteady state displacements. The development of the simulationoptimization tool, in Matlab environment, necessary for the automatic match is presented too. Six unsteady state displacements are performed; four of two-phase and two of three-phase, the experimental data obtained are analyzed using the proposed algorithm. The results from two-phase experiments are compared with those of Sendra software and it is found that the proposed algorithm has a good performance respect to this commercial tool. The results from the three-phase cases show that the algorithm achieves effectively estimate the relative permeability that produce the history match; It is found that there are differences with respect to the estimated curves for two-phase systems.
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