Rheological Behavior of Saudi Crude Oils

Modeling the rheological behavior of waxy crude oils as a function of flow and temperature history

A New Model for Describing the Rheological Behavior of Heavy and Extra Heavy Crude Oils in the Presence of Nanoparticles

The present work proposes for the first time a mathematical model for describing the rheological behavior of heavy and extra-heavy crude oils in the presence of nanoparticles. This model results from the combination of two existing mathematical models. The first one applies to the rheology of pseudoplastic substances, i.e., the Herschel-Bulkley model. The second one was previously developed by ...

Measurement and Prediction of Time-independent and Time-dependent Rheological Behavior of Waxy Crude Oil

Wax deposition phenomenon changes the rheological behavior of waxy crude oil completely. In the current work, the rheological time-dependent and time-independent behaviors of waxy crude oil samples are studied and flow curve and compliance function are measured for the oil samples with various wax contents at different temperatures. A decrease in temperature and an increase in wax content lead ...

Low Temperature Rheological Behavior of Umbarka Waxy Crude and Influence of Flow Improver

L’objet de cette étude est de déterminer les caractéristiques du brut paraffinique d’Umbarka, avec et sans additif pour l’amélioration de l’écoulement, à savoir, l’écoulement à basse température, le point d’écoulement, et les données rhéologiques. Les caractéristiques rhéologiques du brut font apparaître un comportement d’écoulement pseudoplastique avec une limite élastique non newtonienne ains...

Determination of Metal Ions in Crude Oils

Crude oil is complex mixture of hydrocarbons that occur in the earth in liquid form. It constitutes an important part of primary fossil fuels. Crude oil was used as a medicine by the ancient Egyptians, presumably as wound dressing, liniment and laxative. Several centuries later, Spanish explorers discovered crude oil in Cuba, Mexico, Boliva and Peru. The industrial revolution brought increasing...