The steadily growing demand for non-ferrous metals, a shift to heavier crude oil recovery
and tightened environmental standards have increased the importance of heavy petroleum …

Petroporphyrins with nickel (Ni) and vanadium (V) metals in crude oil are harmful to the
catalysts of fluid catalytic cracking (FCC) and residue hydrocracking (RHC) as well as their …

The economic unattractiveness of heavy crude oils in the global oil market scene is fast
changing due to the looming scarcity of light oils. There are huge reserves of heavy oils to …

This study investigated efficacy of tetramethylammonium hydroxide pentahydrate in
extraction of trace metals from Nigerian crude oils. Samples were collected from Belema …

Qualitative and quantitative analyses of chemical elements in crude petroleum using energy-
dispersive X-ray fluorescence spectroscopic technique has attracted the attention of …

This paper is focused on the ways of demetallization of crude oil where most petroleum
products contain traces of mineral compounds by treating crude oil using laser-assisted …

La cuenca de los Llanos Orientales es la cuenca sedimentaria más grande del País. Tiene
una extensión de 225.603 km2, en la que se ubican cerca de 337 campos petroleros que …