Molecular Origins of Heavy Crude Oil Interfacial Activity Part 2:  Fundamental Interfacial Properties of Model Naphthenic Acids and Naphthenic Acids Separated from Heavy Crude Oils

2007 ◽  
Vol 21 (1) ◽  
pp. 199-204 ◽  
Author(s):  
Ramesh Varadaraj ◽  
Cornelius Brons
Keyword(s):  
Crude Oil ◽  
Interfacial Properties ◽  
Naphthenic Acids ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
Interfacial Activity ◽  
Heavy Crude

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

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.

Separation and identification of porphyrin biomarkers from a heavy crude oil Zaap-1 offshore well, Sonda de Campeche, México

2014 ◽  
Vol 18 (07) ◽  
pp. 542-551 ◽  
Author(s):  
Marcela Espinosa ◽  
Ubaldo S. Pacheco ◽  
Florentino Leyte ◽  
Ruben Ocampo
Keyword(s):  
Crude Oil ◽  
High Performance ◽  
Reversed Phase ◽  
Crude Oils ◽  
Heavy Crude Oil ◽  
Chromatography Method ◽  
Main Series ◽  
Heavy Crude ◽  
Series Type ◽  
Liquid Chromatography Method

The task to isolate metalloporphyrin compounds from crude oils is difficult, especially from reservoirs; the existence of well-known complexes homologous series type etioporphyrin (E), deoxophyloerythroetioporphyrin (DPEP), tetrahydrobenzodeoxoerythroetioporpyrin (THBD), benzoetio- porphyrin(BE) and benzodeoxoerythroetioporphyrin (BD) of vanadyl and nickel porphyrins, compounds found in crude oils around the world makes it hard. This includes natural porphyrins found in Mexican crude oils such as Ixtal-101, Zaap-1 and Ceh-1 from Sonda de Campeche, México, were the vanadyl porphyrins mixtures of the main series Etio and DPEP have also been reported elsewhere [14]. The objective of this investigation was to isolate porphyrins isomers from a single heavy crude oil from the Sonda de Campeche area, in México, and is based on the modified reversed-phase high-performance liquid chromatography method (RP-HPLC) [9, 11, 12]. Forty vanadyl porphyrin isomers, such as nickel porphyrin complexes were successfully isolated for the first time from heavy crude oil Zaap-1, through an exhaustive work which included a process of demetallization of vanadyl porphyrins to transmetallization to nickel porphyrins, in agreement with other methods [9, 11, 12, 14]. Further purification was achieved by thin-layer chromatography (TLC) with small glass chromatographic columns, packed with silica gel; then the purified isomers were analyzed and identified by electron impact mass spectrometry (EI-MS), providing the following results: from the Etio series seven isomers C 27 E , C 28 E , C 29 E , C 30 E , C 31 E , C 32 E , C 33 E were identified. From DPEP series six isomers C 29 D , C 30 D , C 31 D , C 32 D , C 33 D , C 34 D were identified; from the BD series it was identified only 1 isomer of vanadyl from BD.

scholarly journals A kinetic study of esterification of naphthenic acids from a Colombian Heavy Crude Oil

2012 ◽  
Vol 4 (5) ◽  
pp. 21-31 ◽  
Author(s):  
Haydée Quiroga-Becerra
Keyword(s):  
Crude Oil ◽  
Kinetic Study ◽  
Frequency Factor ◽  
Naphthenic Acids ◽  
Acid Number ◽  
Esterification Reaction ◽  
Heavy Crude Oil ◽  
Total Acid ◽  
Heavy Crude ◽  
Corrosion Of Steel

This article presents the kinetic study of the esterification reaction of naphthenic acids from a Colombian heavy crude oil, with a Total Acid Number (TAN) of 7,33 mgKOH/g, in a batch type reactor. Temperature was changed between 150 - 250°C while the ratio moles of methanol per mole of carboxylic groups, remained constant in 20:1. The reaction time was varied from 0 - 600 minutes. Reduction in the concentration of naphthenic acids in the reactor is determined by the measurement of Number Total Acid (TAN), ASTM D 664. Naphthenic acids were extracted from the crude and structurally characterized by Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance (NMR) and Gel Permeation Chromatography (GPC). The esterified oil was analyzed by FTIR, to identify the variation of the main functional groups. After determining the activation energy, frequency factor and, reaction order, a kinetic law was proposed for the esterification of naphthenic acids in Colombian heavy oil. Finally, it was evaluated the effect of esterification of naphthenic acids on the corrosion of steel ASTM A106 Gr.B. The corrosion of steel was reduced from 34,16 to 3,08 mils per year, (mpy), after esterification of naphthenic acids.

Foamability of non-aqueous systems containing asphaltenes from a heavy crude oil

2021 ◽  
pp. 1-11
Author(s):  
Eliezer A. Reyes Molina ◽  
José G. Delgado-Linares ◽  
Antonio L. Cárdenas ◽  
Ana M. Forgiarini
Keyword(s):  
Crude Oil ◽  
Heavy Crude Oil ◽  
Aqueous Systems ◽  
Heavy Crude
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