A new correlation for viscosity of heavy crude oil in Sudanese oil fields

Abstract

Oil viscosity is veryimportant property in oil industry, it’s very important in the designing of production equipment, testing wells, EOR methods selection and pipelines. And for that a new correlation has been developed to measure viscosity at different temperatures for a set of heavy oils from the Sudanese oil fields (FNE and FN) using least approximation method (logarithmic form) using excel , covering a viscosity range from 3000 to 39412 mPa.s. A good relationship emerges between temperature and viscosity for a corresponding viscosity temperature correlation with a high confident was obtained for every oil sample. Detailed investigations showed that (viscosity values at temperature T°C) shows a strong function of (viscosity value at 29°C). Therefore, this correlation is used for predicting oil viscosity with only two input parameters: temperature and viscosity at 29°C and it can be used to provide an alternative method to predict the viscosity for heavy oils in Sudanese oil fields.