Measurements and correlation of Mexican heavy dead crude oil viscosities

Journal of Petroleum Science and Engineering, Volume 110, October 2013, Pages 184–192
Measurements and correlation of Mexican heavy dead crude oil viscosities
José L. Mendoza de la Cruz (a), Sergio Alvarez-Badillo (b), Edgar Ramírez-Jaramillo (a), Marco A. Aquino-Olivos (a), Pedro Orea (c)
a Coordinación de Investigación y Desarrollo Tecnológico de Aseguramiento de la Producción de Hidrocarburos, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Col. San Bartolo Atepehuacan, 07730 Mexico, DF, Mexico
b Dirección de Investigación y Posgrado, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Col. San Bartolo Atepehuacan, 07730 Mexico, DF, Mexico
c Programa de Ingeniería Molecular, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Col. San Bartolo Atepehuacan, 07730 Mexico, DF, Mexico
Abstract
Presents reliable measurements for dynamic viscosity of representative heavy oil samples from Mexican reservoirs. Researchers employed a constant force electromagnetic viscometer to measure most of the experimental data of dynamic viscosity.
They calibrated the viscometer using several viscosity standards based on a maximum standard deviation of 0.5% in all measurements for the three pistons used. They derived dynamic viscosities of heavy dead crude oils at a temperature range from 397.1 to 300.8 K, viscosities in the range of 10.9–7476.7 cP, oil API gravity from 11.5 to 19.4, and at a constant pressure of 0.1 MPa. The estimated uncertainty on viscosity was less than ±1.0% over the temperature range of measurements. They designed a novel correlation approach to estimate dynamic viscosities of Mexican heavy crude oils based on oil API gravity, and temperature.
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