Correlation Development For The Viscosity
Reducing Effect Of Solvent In An Enhanced Oil
Recovery (EOR) Process
Author(s)
S. Snow, L. D’Orsay & A. Miadonye
Abstract
Bitumen is characterized by high viscosities and requires diluent to reduce its
viscosity to about 400 cp for pipeline transportation. In this study, viscosity data
on heavy oil-solvent binary and ternary mixtures has been correlated. The data
consist of data obtained from taking measurements of seven heavy petroleum
samples, both bitumen and heavy oils, diluted with five hydrocarbon solvents
and binary and ternary mixtures so to reduce the viscosity of the heavy
petroleum to pipeline viscosity. The amount of solvent varied from 5-60%.
Measurements of viscosity were made at a variety of temperatures ranging
from 10-80°C. Thus, the entire effect of temperature on the viscosity of binary
and ternary mixtures of bitumen diluted with primary and secondary solvents
was evaluated. A total number of 650 data points was obtained, with the
viscosity ratios between 102 and 106. Viscosity correlation based on the
combination of equations from API-TDP and Latour et al (Pet. Sci. Tech.
18(1&2) pp.1-14, 2000) was developed. The results indicate that the correlation
fitted the data best compared to other models. The average absolute deviations
from 2.1% to 5.2% for binary mixtures and from 1.5% to 2.6% for ternary
mixtures were obtained. The equation takes into consideration the combined
interaction effects of temperature and solvent on the heavy oil viscosity.
Keywords: heavy oil, viscosity correlation, diluent, enhanced oil recovery,
binary mixtures, solvent additives.
Keywords
heavy oil, viscosity correlation, diluent, enhanced oil recovery,
binary mixtures, solvent additives.
Related Book
Other papers in this volume
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