Asphaltenes, complex aromatic compounds from various carbonaceous sources, could be
obtained by solvent dissolution, filtration and adsorption. It was difficult to clarify the …

Asphaltene is one of the polar and heavy fractions of crude oil that is complex from a
molecular perspective. For this reason, the interaction between asphaltene molecules and …

The current state-of-the-art analysis techniques for petroleum fractions has progressed
substantially during the past decade. This has helped to further improve the lumping …

Asphaltenes have been suggested to play an important role in the remarkable stability of
some water-in-crude oil emulsions, although the precise mechanisms by which they act are …

The use of hexamethyldisiloxane (HMDSO) for deasphalting heavy crude oil allows
precipitating several times more compounds from crude oil compared to aliphatic …

Three pour point depressants (PPDs) with different chemistries, and extracted asphaltenes
were studied in their influence on wax crystallization in a model system. A new procedure for …

Asphaltenes are a complex mixture of molecular structures with a variety of functionalities,
which in turn impacts their physical properties. Discriminating between asphaltenes that are …

In this study, based on a new procedure, asphaltene fractions of Sarvak oil samples were
determined based on their adhesion to calcite, dolomite, and sandstone surfaces and their …

For decades now, low salinity water flooding (LSWF) oil recovery has emerged as an
environmentally benign and cost-effective method for improved oil recovery, where research …

This study investigates the properties of asphaltene fractions in porous media and their role
in reducing permeability and porosity. Based on the classification of a whole asphaltene …