As fields become mature and more laboratory data is available from specific geographical locations, it is possible to characterize, classify crude oils and develop or modify published correlations to better predict oil PVT properties. This paper shows the results from the attempt to classify and to provide calibrated correlations for the Ecuadorian crude oils. This study is divided in two sections, the first one makes a brief introduction to the main Ecuadorian oil fields, then the Oriente basin´s geology is described, geographical and statistical variation of crude oil properties is shown by reservoir and geological play. At the end of the first section, different criteria are applied to classify PVT samples showing that most data lie in the range of heavy oil. The second part uses the minimum square method to modify published correlations to provide relationships that helps the reader to better estimate oil properties in the absence laboratory data. Modified correlations as well as statistical results from the comparison of measured and predicted properties are listed at the end of this section.
En el presente artículo se describe el desarrollo de un programa que permita la estimación de propiedades de Presión, Volumen y Temperatura (PVT) en los pozos del Oriente Ecuatoriano. El prototipo cuenta con la recopilación de correlaciones más adecuadas para crudo Ecuatoriano, visualización y generación de reportes de los pozos que se encuentren perforados sujeta a información geográfica. Como primer punto, es necesario contar con expresiones matemáticas PVT calibradas a datos de laboratorio correspondientes a la arena U inferior del crudo de la región. Para esta parte, la metodología desarrollada constituye la adquisición, procesamiento y ajuste de datos de información de laboratorio, con el fin de obtener un manejo adecuado de los mismos. La aplicación desarrollada proporcionará la estimación de las propiedades PVT del petróleo más acordes a la Cuenca Oriente. En tal virtud, los resultados experimentales podrán ser utilizados en los diferentes cálculos requeridos para la producción de hidrocarburos de la industria local y para la academia permitirá ampliar las fronteras de estudio.
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