COMPLEX PERMITTIVITY OF CRUDE OILS AND SOLUTIONS OF HEAVY CRUDE OIL FRACTIONS

1998 ◽  
Vol 19 (1) ◽  
pp. 93-126 ◽  
Author(s):  
Trond Friisø ◽  
Yannick Schildberg ◽  
Odile Rambeau ◽  
Tore Tjomsland ◽  
Harald Førdedal ◽  
...  
Keyword(s):  
Crude Oil ◽  
Complex Permittivity ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
Oil Fractions ◽  
Heavy Crude ◽  
Crude Oil Fractions

scholarly journals A comprehensive investigation of refinery preheaters foulant samples originated by heavy crude oil fractions as heating fluids

Fuel ◽  
2018 ◽  
Vol 224 ◽  
pp. 529-536 ◽  
Author(s):  
Elaheh Behranvand ◽  
Mohammad Reza Mozdianfard ◽  
Emilio Diaz-Bejarano ◽  
Francesco Coletti ◽  
Pawel Orzlowski ◽  
...  
Keyword(s):  
Crude Oil ◽  
Heavy Crude Oil ◽  
Comprehensive Investigation ◽  
Oil Fractions ◽  
Heavy Crude ◽  
Crude Oil Fractions

Characterization of heavy crude oil fractions by means of the 13C NMR technique

1979 ◽  
Vol 44 (4) ◽  
pp. 1160-1166 ◽  
Author(s):  
Milan Hájek ◽  
Gustav Šebor ◽  
Ivo Lang ◽  
Zenon Starčuk ◽  
Otto Weisser ◽  
...  
Keyword(s):  
Crude Oil ◽  
Nmr Spectra ◽  
Heavy Crude Oil ◽  
Aromatic Rings ◽  
Oil Fractions ◽  
Aliphatic Carbon ◽  
Heavy Crude ◽  
Crude Oil Fractions ◽  
C Nmr

The 13C NMR spectra of samples of heavy crude oil fractions were interpreted. The spectra of all samples were of the same character. In the region of the aliphatic carbon shifts, ten different carbon atom types were discerned; some possible structure types of hydrocarbons were attributed to them and the arrangement of the aromatic rings in a mean molecule of the samples examined was discussed.

scholarly journals Controlled reduction of aromaticity of alkylated polyaromatic compounds by selective oxidation using H2WO4, H3PO4 and H2O2: A route for upgrading heavy oil fractions

2021 ◽  
Author(s):  
Ewa Nowicka ◽  
Meenakshisundaram Sankar ◽  
Robert Jenkins ◽  
D. W. Knight ◽  
David J Willock ◽  
...  
Keyword(s):  
Crude Oil ◽  
Selective Oxidation ◽  
Heavy Oil ◽  
Significant Proportion ◽  
Fractional Distillation ◽  
Heavy Crude Oil ◽  
Oil Fractions ◽  
Heavy Crude ◽  
Crude Oil Fractions ◽  
Hydrocarbon Reserves

Heavy crude oil fractions which form the residues from fractional distillation are a significant proportion of current hydrocarbon reserves. However, processing residues for use as chemicals or fuels is hampered...

The transalkylation reaction: Analytical tool for the study of heavy crude oil fractions. Application to asphaltenes of various types

1990 ◽  
Vol 16 (4-6) ◽  
pp. 969-980 ◽  
Author(s):  
P.-L. Desbene ◽  
A. Abderrezag ◽  
B. Desmazieres ◽  
J.-J. Basselier ◽  
F. Behar ◽  
...  
Keyword(s):  
Crude Oil ◽  
Analytical Tool ◽  
Heavy Crude Oil ◽  
Oil Fractions ◽  
Heavy Crude ◽  
Crude Oil Fractions

Comparison of Ultrasonic Wave Radiation Effects on Asphaltene Aggregation in Toluene–Pentane Mixture Between Heavy and Extra Heavy Crude Oils

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
S. M. R. Mousavi ◽  
I. Najafi ◽  
M. H. Ghazanfari ◽  
M. Amani
Keyword(s):  
Crude Oil ◽  
Ultrasonic Wave ◽  
Radiation Effects ◽  
American Petroleum Institute ◽  
Wave Radiation ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
Heavy Crude ◽  
Radiation Time ◽  
Flocculation Rate

In this study, it is aimed to compare the efficiency of ultrasonic wave technology on asphaltene flocculation inhibition of crude oils with different American Petroleum Institute (API) gravities. A set of confocal microscopy test is performed and a series of statistical analysis is done. According to the results of this study, there is an optimum radiation time for both crudes at which the viscosity and the flocculation rate of asphaltenic crude oils reduces to its minimum. This optimum appears at later times of radiation for extra heavy oil. Also, it is shown that the rate of changes in the properties measured in this study is sharper for extra heavy crude oil. It could be concluded that the alternations caused by this technology is more significant for Kouh-e-Mond, which is heavier oil than Sarvak crude oil. Derjaguin–Ladau–Verwey–Overbeek (DLVO) kinetic model was also studied and it was understood that this model cannot be a validate model for radiated samples.

Study of the formation and breaking of extra-heavy-crude-oil-in-water emulsions—A proposed strategy for transporting extra heavy crude oils

2015 ◽  
Vol 98 ◽  
pp. 112-122 ◽  
Author(s):  
Rafael Martínez-Palou ◽  
Jesús Reyes ◽  
Ricardo Cerón-Camacho ◽  
Mario Ramírez-de-Santiago ◽  
Diana Villanueva ◽  
...  
Keyword(s):  
Crude Oil ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
Oil In Water ◽  
Heavy Crude

scholarly journals Emulsions with heavy crude oil in presence of nanoparticles

2014 ◽  
pp. 55-68 ◽  
Author(s):  
Stephanie Riaza ◽  
Farid B. Cortés ◽  
Julián Otalvaro
Keyword(s):  
Crude Oil ◽  
Silica Nanoparticles ◽  
Drop Size ◽  
High Water ◽  
Alternative Solution ◽  
Inversion Effect ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
External Phase ◽  
Heavy Crude

A study about the use of silica nanoparticles in crude oils from the Castilla field and the effects on stability, drop size and emulsion viscosity was carried out. The interest in the use of this type of nanoparticles is created by the inversion effect that these produce in the W/O emulsion at high water cuts upper than 48%. The emulsion is transformed in W/O/W being the latter the least viscous due to the water is the external phase and it allows to the crude oil slides easily on any surface. In this study, two types of naturally emulsified crude oil with different water cuts and a synthetic emulsion were used. This kind of behavior created by nanoparticles over the emulsion could be an alternative solution to the viscosity, fluidity and mobility problems that affect the extraction and transportation in heavy crude oil.

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