Development of a viable crude transportation system that moves multiple crude oils requires knowledge of the crude blend pour points and other properties. The pour points of crude blend are generally not linearly proportional to the mixing-ratio of every individual crude. Reported approaches for estimating the pour points of crude blends require the pour points of every binary crude blend at a mixing-ratio of 1:1 or several compositional contents such as paraffin, resin, gas-benzene contents in the blends and viscosities at some temperatures. These requirements cause great difficulties in some cases when these basic data are unavailable as when, for example, no crude sample is available. An analysis on pour-point data from 26 binary crude blends has revealed a good relationship between two differences of pour point: The difference between the measured and the linear-weight-estimated pour points of the binary crude blends at a mixing-ratio of 1:1. The difference between the pour points of the two individual crudes. This analysis has permitted development of a new correlation for estimating the pour points of multiple crude blends. Use of this correlation allows estimation of the pour points of multiple crude blends at any mixing-ratio by use of only the pour points of the individual crudes. Verified by experimental data of multiple crude blends from two to five individual crudes, the new approach has equivalent accuracy compared to the reported approaches and presents a new way to estimate the pour points of any multiple crude blends.
New approach developed for estimating pour points of crude oil blends
Mit einem neuen Ansatz kann der Stockpunkt von Rohölmischungen bestimmt werden
Oil and Gas Journal ; 101 , 31 ; 60-64
2003
5 Seiten, 2 Bilder, 7 Tabellen, 6 Quellen
Article (Journal)
English
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