Article
Energy & Fuels
Abotaleb Abdelazim, Mahmoud Abu El Ela, Ahmed El-Banbi, Helmy Sayyouh
Summary: The proposed approach effectively diagnosed and treated asphaltene precipitation issues in two oil wells, leading to increased oil production rates and significantly reduced operating costs. The method accurately identified the solid deposits, determined proper treatment options, and improved overall well performance.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
Aaron Macias, Esau A. Hernandez, Vicente Samano, Jorge Ancheyta
Summary: The regular solution model with HBT molar volume correlation is used to predict asphaltene precipitation in crude oils and blends. The presence of other compounds greatly affects asphaltene precipitation under the same temperature and pressure conditions. The proposed model accurately predicts asphaltene precipitation using average properties and assumptions.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Fei Yang, Ze Duan, Daiwei Liu, Chuanxian Li, Guangyu Sun, Hao Zhang, Bo Yao
Summary: In this study, a series of multi-alkylated aromatic amides (MAA) amphiphiles were synthesized and evaluated as asphaltene dispersants for Saudi crude oil. Experimental results showed that adding MAA-3 significantly increased the initial flocculation point, reduced the size of asphaltene aggregates, and increased the viscosity of the oil sample. The number of alkyl side chains was found to affect the performance of the asphaltene dispersants, with MAA-3 exhibiting the best performance. Molecular simulation results further validated the experimental findings.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Petroleum
Lee Yeh Seng, Berna Hascakir
Summary: This study investigates the effects of polar fractions of heavy oil on the surfactant-steamflooding process, highlighting the importance of interactions between asphaltenes and surfactants in enhancing oil recovery. The research reveals that a longer hydrocarbon tail in surfactants leads to higher cumulative oil recovery, indicating the significance of intermolecular forces in the performance of surfactant-steam processes in heavy oil reservoirs.
Article
Energy & Fuels
Gabriela Barbosa-Moreno, Adriana Isabel Reyes de la Torre, Nohra Violeta Gallardo-Rivas, Benjamin Portales-Martinez, Oscar Morelos Santos, Mayda Lam-Maldonado, Jose Aaron Melo Banda, Margarita Garcia-Hernandez, Ana Maria Mendoza Martinez
Summary: This study investigates the use of ionic liquid materials as stabilizers for water-oil emulsions, particularly in the case of heavy oils. The findings reveal that the alkyl chain length of the ionic liquids has an impact on the stability of the emulsion, with longer chain lengths resulting in better performance.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Alexandra Saitova, Sergey Strokin, Jorge Ancheyta
Summary: The study compared the pyrolysis and oxidation processes of asphaltenes extracted from Yarega heavy crude oil and its residues in both nitrogen and air atmosphere. Different stages of pyrolysis and oxidation were identified, with varying characteristics observed for the different samples. Kinetic parameters were estimated and the findings can potentially contribute to the development of asphaltene processing methods in petroleum refineries.
Article
Thermodynamics
Umesh B. Deshannavar, Ramasamy Marappagounder
Summary: Threshold crude oil fouling models use activation energy to predict initial fouling rates, but this approach has limitations; A modified threshold fouling model that does not rely on activation energy has been proposed and validated in this study.
HEAT TRANSFER ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Abdul Salam Abdul Raheem, Dorra Hentati, Dawoud Bahzad, Raeid M. M. Abed, Wael Ismail
Summary: We enriched bacterial consortia from oilfield samples and found that they have potential for bio-catalytic upgrading of heavy crude oil. Treatment with one bacterial consortium resulted in an increase in saturates fraction, a decrease in aromatics fraction, a reduction in asphaltene content, and an increase in resins. The biotreated oil also showed better recovery of fractions compared to the non-treated oil. The bacterial consortia composition varied with the source and changed over time, with certain bacteria identified as key players in the bioupgrading process.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2022)
Article
Energy & Fuels
Estrella Rogel, Marta Lezcano, Nay Yee, Matthias Witt
Summary: This study examines the changes in characteristics of the precipitated material from the blending of two crude oils over time. The deposits show higher concentrations of asphaltenes and waxes compared to the parent crude oils, and also contain significant amounts of maltenes. As aging progresses, the deposit becomes more hydrogen deficient and richer in asphaltenes. The concentration of waxes initially decreases but later increases, and their distribution shifts to longer alkanes. Maltenes exhibit similar behavior to waxes as the deposit ages.
Article
Energy & Fuels
Estrella Rogel, Marta Lezcano, Nay Yee, Matthias Witt
Summary: The characteristics of the precipitated material from two crude oil blends were analyzed in relation to aging time. The deposits were found to be enriched in asphaltenes, waxes, and maltenes compared to the original crude oils. The amount and composition of the deposits changed as they aged, with a decrease in deposit amount at shorter times and an increase at longer times. The deposits became more hydrogen deficient and richer in asphaltenes, while waxes and maltenes showed similar temporal behavior.
Article
Energy & Fuels
Caiua Araujo Alves, Jose Francisco Romero Yanes, Filipe Xavier Feitosa, Hosiberto Batista de Sant'Ana
Summary: This study compares the effects of asphaltene stability from two different crude oil samples on water-model oil interfacial tension and emulsion stability. The size of molecules in the feedstock has a predominant effect on reducing interfacial tension, while larger molecules are responsible for emulsion stability.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jiangbo Wen, Haijun Luo, Gang Ai
Summary: The study found that the emulsified water fraction is related to the physicochemical properties of crude oil and can be conveniently predicted with a prediction model for different crude oils and shearing conditions. The model prediction has a mean relative deviation of 4.5%.
Article
Energy & Fuels
Olga S. Zueva, Elvira R. Zvereva, Anastasiya O. Makarova, Aliya R. Galimzyanova, Marina Ageeva, Yaroslav Onishchenko, Vadim V. Salnikov, Alexander N. Turanov, Alexey V. Vakhin
Summary: This paper presents the results of chemical and physical investigations of the crude oil residue obtained from the Mangyshlak reservoir in Kazakhstan. The study reveals the presence of associations between n-alkanes and between n-alkanes, resins, and asphaltenes in the crude oil residue sample. Additionally, the non-Newtonian behavior of the system at temperatures of 70-90 degrees C is observed.
Review
Engineering, Chemical
Ana M. Sousa, Henrique A. Matos, Maria J. Pereira
Summary: The study reviewed the main principles affecting emulsions, the influence of water fraction on flow patterns, the equations for estimating physical properties, and the methods for identifying or characterizing emulsions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
E. A. Alshaafi, A. Prakash, S. M. Mercer
Summary: The potential of ultrasonic techniques in characterizing water-in-oil emulsions was investigated for industrial applications by studying stability and droplet size distribution in different mineral and crude oil samples. The technique was successfully applied to characterize emulsions with varying asphaltene content in crude oils, demonstrating its applicability in determining acceptable levels to avoid formation of stable emulsions. Attenuation measurements provided a clearer illustration of water separation process in various emulsions compared to volume measurements, with observed attenuation effects linked to emulsion system rheology.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Francia Marcano, Lyzette G. M. Moura, Felipe M. R. Cardoso, Paulo T. V. Rosa
Article
Energy & Fuels
Cristina M. S. Sad, Ivina L. Santana, Milton K. Morigaki, Edna F. Medeiros, Eustaquio V. R. Castro, Maria F. P. Santos, Paulo R. Filgueiras
Article
Energy & Fuels
Joao Felipe R. Bassane, Cristina M. S. Sad, Dorval M. C. Neto, Francine D. Santos, Mayara Silva, Fabricio C. Tozzi, Paulo R. Filgueiras, Eustaquio V. R. de Castro, Wanderson Romao, Maria F. P. Santos, Jose Olegario R. da Silva, Valdemar Lacerda
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2016)
Article
Chemistry, Analytical
J. P. Souza, P. S. Barela, K. Kellermann, M. F. P. Santos, D. P. Moraes, J. S. F. Pereira
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2017)
Article
Chemistry, Analytical
Aline L. H. Muller, Rochele S. Picoloto, Regina C. L. Guimaraes, Ricardo A. Guarnieri, Bianca M. S. Ferreira, Julio C. M. Dias, Maria F. P. Santos, Erico M. M. Flores, Edson I. Muller
ANALYTICAL LETTERS
(2013)
Article
Energy & Fuels
Lucio L. Barbosa, Cristina M. S. Sad, Vinicius G. Morgan, Maria F. P. Santos, Eustaquio V. R. Castro
Article
Energy & Fuels
Cristina M. S. Sad, Valdemar Lacerda, Paulo R. Filgueiras, Vitor S. Rigoni, Joao F. P. Bassane, Eustaquio V. R. Castro, Katia S. Pereira, Maria F. P. Santos
Article
Energy & Fuels
Paulo R. Filgueiras, Cristina M. S. Sad, Alexandre R. Loureiro, Maria F. P. Santos, Eustaquio V. R. Castro, Julio C. M. Dias, Ronei J. Poppi
Article
Energy & Fuels
Antonio Carlos da Silva Ramos, Marlus Pinheiro Rolemberg, Lyzette Goncalves Moraes de Moura, Evaldo Lopez Zilio, Maria de Fatima Pereira dos Santos, Gaspar Gonzalez
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2013)
Article
Chemistry, Multidisciplinary
Lyzette Goncalves Moraes de Moura, Marlus Pinheiro Rolemberg, Antonio Carlos da Silva Ramos, Maria de Fatima Pereira dos Santos, Evaldo Lopez Zilio
Article
Energy & Fuels
John W. S. Rocha, Maristela A. Vicente, Breno N. Melo, Maria de Lourdes S. P. Marques, Regina C. L. Guimaraes, Cristina M. S. Sad, Eustaquio V. R. Castro, Maria F. P. Santos
Article
Chemistry, Physical
Luana Negri, Petterson Simonassi, Luila A. Saidler, Maristela A. Vicente, Erico M. M. Flores, Maria F. P. Santos
Summary: The study focused on the dynamic viscosity and rheological properties of water-in-oil emulsions, highlighting the significant influence of water volumetric fraction on the rheological behavior of the emulsions. Additionally, it was found that viscosity increased as the water volumetric fraction increased, while temperature increase led to a decrease in viscosity.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Tomas S. Lins, Gleiciane Pisoler, Gabriel T. Druzian, Luana Negris, Paulo A. P. Decote, Maristela A. Vicente, Erico M. M. Flores, Maria F. P. Santos
Summary: The study proposed a greener approach to intensify base oil recovery for truck engines using environmentally friendly solvents and a combination of mechanical stirring and ultrasound. The system with pre-extraction effectively removed impurities, while the mechanical stirring and ultrasound system enhanced the extraction process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)