Our knowledge of electromagnetic heating’s effect on heavy oil upgrading is largely based very limited data. The aim the present research was thus to study in detail microwave exposure absence and presence nanosized magnetite composition oil. obtained data reveal that use improves not only radiation application as a result its absorption release thermal energy but also these nanoparticles have ...

BACKGROUND AND HYPOTHESIS In the oil industry, asphaltenes are known for their tendency to aggregate in solution and to deposit on surfaces, with both properties being connected with operational problems associated with recovery, production and refining. Interactions involving asphaltenes and other crude oil components have been a major aspect of investigation in attempting to understand the fu...

Polycyclic aromatic hydrocarbons (PAHs) are essential components in numerous natural and man made organic compounds. In asphaltenes, knowledge of the electronic structure of both its aromatic and aliphatic components is of crucial importance, when trying to understand and predict its macroscopic properties. *Correspondence: Uwe Bergmann, Physical Biosciences Division, Lawrence Berkeley National...

The Yen−Mullins model, also known as the modified Yen model, specifies the predominant molecular and colloidal structure of asphaltenes in crude oils and laboratory solvents and consists of the following: The most probable asphaltene molecular weight is ∼750 g/mol, with the island molecular architecture dominant. At sufficient concentration, asphaltene molecules form nanoaggregates with an aggr...

Asphaltenes are the n-pentane or n-heptane insoluble fractions of crude oil that remain in solution under reservoir temperature and pressure conditions. They are destabilized and start to precipitate when the pressure, temperature and/or composition changes occur during primary production. The precipitated asphaltene particles will then grow in size and may start to deposit onto the product...

Stabilization of the pavement base course using asphalt emulsion is one strategies that improves layer’s strength and, consequently, enhances performance. In this study, to improve performance asphalt-emulsion-stabilized course, asphaltenes derived from Alberta oil sands bitumen are added mix. Asphaltenes a byproduct deasphalting process sand and have no significant value in industry. The modif...

Asphaltenes are known as the 'cholesterol' of crude oil. They form nano-aggregates, precipitate, adhere to surfaces, block rock pores and may alter the wetting characteristics of mineral surfaces within the reservoir, hindering oil recovery efficiency. Despite a significant research effort, the structure, aggregation and deposition of asphaltenes under flowing conditions remain poorly understoo...

The asphaltene fraction of crude oils is one of the main factors defining wettability conditions and ultimate oil recovery. At reservoir scale asphaltenes may cause reservoir compartmentalization and at pore scale govern wettability phenomena. To reproduce reservoir conditions, aging in oil is a common step in laboratory core analysis. Oils relevant to the origin of the plugs are the apparent c...