Article
Energy & Fuels
Syed Imran Ali, Shaine Mohammadali Lalji, Javed Haneef, Usama Ahsan, Syed Mohammad Tariq, Syed Talha Tirmizi, Ramsha Shamim
Summary: The main goal of Petroleum Exploration and Production (E&P) companies is to achieve sustainable hydrocarbon production throughout the oil field life, but asphaltene precipitation and deposition pose a major challenge to this goal. Proper screening of asphaltene stability in crude oils can help predict stability accurately and plan preventive measures. Different dead and live oil screening techniques have their own limitations, risks, and advantages, and a detailed analysis and comparison can help in selecting the best technique for monitoring asphaltene stability in crude oils.
Article
Energy & Fuels
Behnam Shahsavani, Masoud Riazi, Mohammad Reza Malayeri
Summary: The precipitation behavior of asphaltene is controlled by the concentration and relative distribution of sub-fractions within oils 1, 2, and 3, while different ions affect the size of water droplets and the presence of asphaltene in emulsions. The addition of tetrahydrofuran (THF) slows down asphaltene precipitation by diluting the oil phase at the oil/water interface.
Article
Energy & Fuels
Mitchell Huffman, H. Scott Fogler
Summary: Asphaltenes are molecules in crude oil that can be dissolved in aromatic solvents but precipitate in the presence of n-alkanes. There are a large number of different molecules classified as asphaltenes in crude oil. Experimental results showed that the amphiphile head group has an effect on asphaltene destabilization and aggregation.
Article
Energy & Fuels
Isah Mohammed, Dhafer Al Shehri, Mohamed Mahmoud, Muhammad Shahzad Kamal, Olalekan Saheed Alade, Abdullah Sultan, Shirish Patil
Summary: This study aims to investigate the impact of reservoir rock mineralogy on the structural characteristics of asphaltene molecules and how these characteristics affect remediation efforts. The results show that while the composition of asphaltene samples from different crude oil samples is similar, their structural makeup varies. Additionally, rock mineralogy has an influence on the structural characteristics of asphaltene, which in turn impacts the effectiveness of remediation fluids in clearing up asphaltene deposits.
Article
Engineering, Petroleum
Akshaya Kumar Mishra, Rajak Kumar Jhalendra, Ashutosh Kumar
Summary: Oil recovery simulation sensitivity increases with heavier oils for existing viscosity models. The P-mu-T cubic viscosity model, which was developed for pure hydrocarbon components, was extended to reservoir oils by adjusting two parameters: K-c for controlling the viscosity gradient with pressure and the e shifting trends for increasing viscosity direction. The model shows improved accuracy in predicting viscosity data for different types of oils and blends compared to other models, and it requires only two optimizing parameters.
Article
Energy & Fuels
Sepideh Alimohammadi, Lesley James
Summary: Equation of state (EoS) modeling of complex molecular chain asphaltenes suffers from uncertainty, and better accounting of hydrogen bonding and van der Waals forces could improve EoS models. In this study, cubic plus association (CPA) EoS was used to calculate asphaltene precipitation and onset, with a global optimization framework to estimate the best fit of adjustable parameters.
Article
Energy & Fuels
Zeinab Hosseini-Dastgerdi, Ashkan Maleki, Ebrahim Elyassi, Alimorad Rashidi
Summary: This study evaluates the potential application of silica-polyacrylamide nanocomposites in inhibiting asphaltene precipitation. The nanocomposites delay the onset of asphaltene precipitation and control the size of aggregates through adsorption. This research demonstrates the effectiveness of silica-polyacrylamide nanocomposites in handling asphaltene precipitation.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Review
Energy & Fuels
Murray R. Gray, Harvey W. Yarranton, Martha L. Chacon-Patino, Ryan P. Rodgers, Brice Bouyssiere, Pierre Giusti
Summary: The molecules in petroleum asphaltenes form nanoaggregates in solution with debated size distribution, impacting phase behavior, physical properties, and processing of heavy petroleum fractions. The molecular weight ranges high with sizes below 100 nm, and large aggregates play a significant role in phase separation and emulsion stabilization. Average properties of asphaltene fraction can predict phase separation, gravity segregation, and other properties.
Article
Energy & Fuels
M. Daniela Contreras-Mateus, Francisco H. Sanchez, Diana M. Canas-Martinez, Nashaat N. Nassar, Arlex Chaves-Guerrero
Summary: This article investigates the adsorptive phenomena of nanomaterials and asphaltenes, focusing on magnetite nanoparticles/asphaltene systems and the effect of resins as stabilizing colloidal agents. The results show rapid asphaltene adsorption following the external mass transfer model and equilibrium adsorption described by the monolayer Langmuir model. The research also discovered that the adsorbed asphaltenes create a steric repulsive barrier between particles, reducing interaction intensity.
Article
Multidisciplinary Sciences
Syed Imran Ali, Shaine Mohammadali Lalji, Muhammad Rizwan, Zahoor Awan, Saud Hashmi, Syed Danish Rasool
Summary: The flow properties of crude oil can be improved by increasing temperature or diluting the oil with lower molecular weight hydrocarbons. However, these operational changes often lead to asphaltene deposition problems. In this study, a two-level full factorial design was applied to investigate the effect of three experimental parameters on the yield of asphaltene weight percentage. The results showed that dilution ratio has a significant positive effect, while molecular weight of precipitant and temperature have a moderate negative effect on the response variable. The study provides a useful methodology for optimizing production parameters.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Trinity Thobejane, Philip L. de Vaal
Summary: This article focuses on the lubricity behavior of three representative fuel oil types and the potential blocking of filters and nozzles caused by unwanted components in these fuel oils. The presence of asphaltenes changes the viscosities of fuel oils and affects their lubricity behavior. Different fuel oils showed different friction and wear characteristics at high temperatures, with medium wax-blend fuel oil (MFO) having good performance and crude-derived heavy fuel oil (HFO) causing severe wear.
Article
Energy & Fuels
Syed Imran Ali, Shaine Mohammadali Lalji, Javed Haneef, Clifford Louis, Abdus Saboor, Nimra Yousaf
Summary: This research study compares the performance of different scaling equations and non-scaling models in modeling asphaltene precipitation, finding that all scaling equations are reasonably accurate in predicting asphaltene weight percentage. However, they are less accurate in predicting critical dilution ratio compared to non-scaling models.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Farzaneh Nazari, Mehdi Assareh, Ehsan Vahabzadeh Asbaghi
Summary: This study utilizes various methods to predict the instability conditions of Asphaltene precipitation at different stages, resulting in accurate numerical predictions for both live and degassed oil.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Zhuo Chen, Ruixue Li, Huazhou Li
Summary: Asphaltene precipitation is a significant issue in petroleum engineering that can impact oil production. Predicting the conditions of asphaltene precipitation accurately is crucial for mitigating flow assurance problems. This study developed a new algorithm for three-phase vapor-liquid-asphaltene precipitation based on the free-asphaltene assumption, and validated its accuracy through comparisons with experimental data.
FLUID PHASE EQUILIBRIA
(2022)
Article
Energy & Fuels
A. Sanati, M. R. Malayeri, M. Nategh, O. Busse, J. J. Weigand
Summary: This study investigates the performance of an ionic liquid-based hydrophobic deep eutectic solvent (HDES) as an asphaltene deposition inhibitor using the extended DLVO theory and surface energy concepts. It was found that AB interactions play a crucial role in inhibiting asphaltene deposition, and the presence of HDES can repel asphaltene from the dolomite surface. Additionally, HDES can prevent asphaltene particles from aggregating and depositing onto the surface by altering cohesion/adhesion forces.
Article
Energy & Fuels
Armin Mozhdehei, Negandar Hosseinpour, Alireza Bahramian
Article
Energy & Fuels
Fazel Mansoori Mosleh, Yadollah Mortazavi, Negandar Hosseinpour, Abbas Ali Khodadadi
Article
Energy & Fuels
Mahmoud Abdi Ghassem Kheili, Negahdar Hosseinpour
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Chemistry, Physical
Sefatallah Ashoorian, Aliyar Javadi, Negahdar Hosseinpour, Maen Husein
Summary: This study introduces novel experimental protocols to investigate the evolution of adsorbed asphaltene layer to a film of aggregates at a model oil/water interface by means of dynamic interfacial tension (IFT) and dilational surface rheology measurements. It is found that the transformation of an asphaltene adsorbed layer to a rigid film depends not only on asphaltene concentration but also on aging time and interfacial area perturbations. These findings suggest that standard deviation from Young-Laplace shape fitting can be a rigorous parameter to reveal the properties of the interfacial asphaltene film, which cannot be recognized by regular IFT measurements.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: The study showed that the synthesized MWCNT-Fe2O3 nanocomposite can effectively control the precipitation and aggregation of asphaltene, improving the stability and flow properties of crude oil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Ali Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: This study synthesized Fe2O3 and functionalized SiO2 nanoparticles to investigate their effects on asphaltene precipitation and aggregation in live oils. The results showed that Fe2O3 nanoparticles better controlled asphaltene precipitation compared to F-SiO2, leading to increased stability and reduced asphaltene structure size. TEM images confirmed these results and indicated an increase in aromatic sheet interlayer spacing.
Article
Chemistry, Physical
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: Synthesized single-walled carbon nanotubes (SWCNTs) effectively delay asphaltene precipitation and reduce the size distribution of asphaltene aggregates. The highest dispersion efficiency value of 93.5% is achieved at a concentration of 100 ppm. The large surface area of SWCNTs and strong pi-pi interactions with asphaltenes contribute to their efficient control of asphaltene precipitation/aggregation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Paper & Wood
Amir Varamesh, Ragesh Prathapan, Ali Telmadarreie, Jia Li, Keith Gourlay, Gurminder Minhas, Qingye Lu, Steven L. Bryant, Jinguang Hu
Summary: Nanocellulose, particularly cellulose filaments (CFs), has shown great potential in formulating stable Pickering emulsions over a wide range of salt concentrations and pH levels. CFs can adsorb strongly to oil and water interfaces, providing stable surfactant-free emulsions with larger droplet sizes and comparable or better stability than conventional nanocelluloses. The higher viscosity of the continuous phase in the presence of CFs contributes to their effectiveness in emulsion stabilization.
Article
Engineering, Environmental
Fatemeh Mahmoudi Alemi, Saber Mohammadi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Abdolvahab Seif
Summary: In this study, a new class of carbon nanoparticles (CNPs) was synthesized to inhibit/disperse asphaltene precipitation and aggregation in unstable crude oil. Experimental and theoretical results demonstrate that CNPs have high specific surface area and strong chemisorption capability, making them an effective asphaltene handling strategy.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Sara Shourni, Aliyar Javadi, Negahdar Hosseinpour, Alireza Bahramian, Mohammad Raoufi
Summary: Protein corona adsorption layers on nanoparticle surfaces can significantly affect the interactions and reactivity of nanoparticles. This study develops a novel experimental protocol based on dynamic interfacial properties to evaluate protein-nanoparticle interactions in situ. The results show good agreement with other experimental techniques and provide a better understanding of protein corona formation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Narges Bahaloo Horeh, Negahdar Hosseinpour, Alireza Bahramian
Summary: This study provides an asphaltene inhibitor (BZSS-012) and emphasizes the mutual dependence of the inhibitor-asphaltene molecular structure/functional groups for successful inhibition. Two dead oil samples were used to extract asphaltenes and prepare model oils, and interfacial rheology measurements and conventional asphaltene dispersant tests were performed to evaluate the inhibitor performance. It was found that the inhibitor achieved an efficiency of 99.2% in the F-model oil, higher than the 66.7% efficiency in the A-model oil. Monitoring the standard deviation of dynamic interfacial tension was considered as an appropriate method to screen asphaltene inhibitors.
Article
Energy & Fuels
Mohsen Bahaloo Horeh, Negahdar Hosseinpour, Aliyar Javadi
Summary: During oil production, asphaltenenanoaggregates self-associateand can precipitate out from the oil phase. Metaloxide nanoparticles coated with carbon-containing chains were synthesized to inhibit the precipitation of asphaltene. The inhibition mechanism and performance of the synthesized inhibitor were evaluated through conventional asphaltene dispersant test (ADT), interfacial tension (IFT) measurements, and interfacial elasticity analysis.
Article
Chemistry, Physical
Sefatallah Ashoorian, Aliyar Javadi, Negahdar Hosseinpour, Nashaat N. Nassar
Summary: The impact of aromaticity variation on the surface behavior of asphaltenes was investigated, revealing that low aromaticity conditions led to increased asphaltene surface activity and changes in dilational rheological parameters. The study also highlighted the importance of dynamic interfacial data over static data, suggesting that only a small portion of asphaltenes are practically surface-active, with their surface activity directly correlated with the aromaticity of the solution.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Nanoscience & Nanotechnology
Tatiana Montoya, Azadeh Amrollahi, Gerardo Vitale, Negahdar Hosseinpour, Nashaat N. Nassar
ACS APPLIED NANO MATERIALS
(2020)
