Article
Acoustics
Ephraim Otumudia, Hossein Hamidi, Prashant Jadhawar, Kejian Wu
Summary: Asphaltene deposition around the wellbore is a common problem in heavy oil reservoirs and can cause formation damage. Ultrasonic stimulation is considered to be a cost-effective and environmentally friendly method for removing asphaltene deposition. This study aimed to investigate the impact of reservoir pore geometries and ultrasonic parameters on the effectiveness of ultrasound treatment. Five two-dimensional glass micromodels with different pore geometries were designed and experiments were conducted using an ultrasound bath at a set frequency (20 kHz) and adjustable powers (100-1000 W). The results showed that the efficiency of ultrasound treatment varied depending on the pore geometries of the micromodels, with an increase in ultrasonic power resulting in a higher percentage of removed asphaltene deposition.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Engineering, Environmental
Jian Song, Yuxuan Zeng, Yuanyuan Liu, Wei Jiang
Summary: In this study, the aggregation, deposition, and retention of graphene oxide (GO) and reduced graphene oxide (RGO) in the environment were systematically investigated. It was found that RGO aggregates faster than GO and has a lower deposition rate on oxide surfaces. RGO also achieves favorable deposition at lower ionic strength. Additionally, the mobility of RGO is lower than GO in porous media.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Petroleum
Mukhtar Elturki, Abdulmohsin Imqam
Summary: Gas-enhanced oil recovery by nitrogen injection is efficient but may cause asphaltene deposition. This research focused on nitrogen impact on asphaltene precipitation in nanopores, leading to pore plugging and reduced oil recovery. Increasing nitrogen injection pressure and longer mixing time resulted in higher asphaltene content, causing significant pore plugging.
Article
Engineering, Chemical
Kenji Kofu, Koki Kobayashi, Yusuke Shimada, Masashi Harada
Summary: This study found that applying ultrasonic vibrations to a fluidized particle bed can reduce the minimum air velocity required for fluidization and pressure loss, with greater effects observed when using larger particles and smaller pipe diameters. However, fluidization of 40 μm particles remains challenging due to their inability to reduce cohesion among particles.
Article
Energy & Fuels
Yutaka Onaka, Kozo Sato
Summary: Asphaltene deposition in pore-throats reduces permeability and oil production. Wang and Civan's model is commonly used to calculate deposition amount and permeability reduction, but difficulty arises from the numerous adjustable parameters impacting consistency with observed data.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Jun Zhang, Qi Wei, Bojin Zhu, Wendong Wang, Lei Li, Yuliang Su, Peng Wang, Youguo Yan, Jiawei Li, Zhen Li
Summary: The colloidal structure and interactions of crude oil in pipelines were studied using large-scale dissipative particle dynamics simulations and all-atom molecular dynamics simulations. The results showed that temperature, pressure, and flow speed collectively influenced the colloidal structure of crude oil, and the competitive adsorption of crude oil components on pipeline surface was revealed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Yu-Jiun Lin, Zhuqing Zhang, Sibani Lisa Biswal
Summary: This study characterizes the entrapment of asphaltene-stabilized water/brine-in-oil emulsions in microfluidic porous media by two mechanisms: adhesion and hydrodynamic bridging. Lower water fractions result in droplet adhesion to deposited asphaltenes, while erosion and bridging between droplets become more prevalent at higher water fractions. The addition of salinity weakens adhesion but leads to increased droplet size and enhanced bridging. Higher salinity also reduces interface elasticity, resulting in larger emulsions with more erosion and bridging.
Article
Energy & Fuels
Olivia M. Haider, Junchi Ma, Kathryn A. Grzesiak, Lynn M. Walker
Summary: The colloidal and aggregation behavior of asphaltenes in bulk dispersions is greatly influenced by the solvent environment. This study investigates the precipitation behavior of two asphaltene subfractions in good and poor solvent conditions using a millifluidic device to understand the long-term solvency effects. The results demonstrate the importance of considering long-term effects when determining the stability of asphaltene dispersions.
Article
Construction & Building Technology
Fenghua Nie, Wei Jian, Zechuan Yu, Cheuk Lun Chow, Denvid Lau
Summary: In this study, a new coarse-grained model is developed to investigate the formation of aggregated microstructures in asphaltene. The results show that asphaltene disks gradually adjust their positions and orientations during equilibrium process, forming columnar structures containing packed asphaltene disks. The packing fraction and microstructures are influenced by the aspect ratio, temperature, and pressure of asphaltene disks. This coarse-grained model helps understand the formation mechanism of asphaltene agglomerates and provides insights for solving aggregation problems in asphaltene systems.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Priyanka Juyal, Shayan Enayat, Rebecca Lucente-Schultz, Qiwei Li, Mahtab Karimipour, Mohammad Tavakkoli, Tran-Bich Cao, Andrew Yen, Christopher Russell, Francisco M. Vargas
Summary: Asphaltene deposition is a growing concern in oil fields worldwide, and continuous injection of asphaltene inhibitors is a common strategy to mitigate this problem. The performance ranking of inhibitors depends on the type of test used, and there is still a need to develop a correlation between laboratory and field performance. This study investigates a commercial asphaltene inhibitor's performance in the laboratory and its behavior in a deepwater-oil well, with a focus on the effects of asphaltene polydispersity. The results aim to expand knowledge on this topic and provide best practices for testing the performance of asphaltene inhibitors in the laboratory.
Article
Construction & Building Technology
Jin Tang, Hao Wang
Summary: This study developed coarse grained models of asphalt binders and used DPD to study nanostructure and aggregation behavior. The simulation results showed that aggregation rates of asphaltene were positively correlated with asphaltene mass fractions, aiding in predicting relative viscosity of asphalt binders. The analysis findings indicated that coarse grained modeling with DPD enables large-size model asphalt systems for observation of morphology and aggregation of asphaltene.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Energy & Fuels
Ronald Nguele, Hikaru Hirota, Yuichi Sugai, Kyuro Sasaki
Summary: The study indicates that the use of polymer-based nanofluid can effectively reduce asphaltene adsorption in CO2 oil recovery, with nanofluid exhibiting superior interfacial tension reduction compared to water, and can reduce asphaltene adsorption by providing steric hindrance.
Article
Thermodynamics
Zoushuang Li, Junren Xiang, Xiao Liu, Bin Shan, Rong Chen
Summary: This paper develops a multiscale computational fluid dynamics (CFD) simulation based on the dense discrete phase method (DDPM) to study the ultrasonic vibration-assisted fluidized bed atomic layer deposition (FB-ALD) process. Results show that ultrasonic vibration effectively improves the contact efficiency between uncoated particles and precursor molecules, leading to higher deposition rates and coating uniformity. The model developed in this work can be used to optimize the process conditions for the scale-up of FB-ALD reactors.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Jingtao Wang, Jialin Yang, Yuting Jia, Zhiming Xu
Summary: The presence of silica and calcium carbonate affects the heat exchanger operation and decreases the heat transfer coefficient. Molecular dynamics simulation was used to analyze the aggregation and deposition mechanism on copper surface in SiO2 particle suspension, CaCO3 solution, and SiO2-CaCO3 mixed system. The results showed that the interaction between SiO2 particle and CaCO3 promoted the aggregation and deposition of the mixed cluster. The study provides a theoretical basis for scale suppression methods.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Energy & Fuels
Ato Kwamena Quainoo, Abdulmohsin Imqam
Summary: The employment of predictive techniques combining kinetic and thermodynamic analyses is crucial for controlling asphaltene precipitation during crude oil production. This study investigates the long-time kinetics of asphaltene precipitation using a model oil and confirms the significant impact of temperature, rotation speeds, and precipitant concentrations on asphaltene yields and sizes. The findings contribute to enhancing the predictability of asphaltene-related issues in oil production.
Article
Energy & Fuels
Forough Ameli, Mohammad Reza Moghbeli, Ali Alashkar
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Review
Engineering, Environmental
Anna L. Hodshire, Ali Akherati, Matthew J. Alvarado, Benjamin Brown-Steiner, Shantanu H. Jathar, Jose L. Jimenez, Sonia M. Kreidenweis, Chantelle R. Lonsdale, Timothy B. Onasch, Amber M. Ortega, Jeffrey R. Pierce
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Polymer Science
A. Jamali, M. R. Moghbeli, F. Ameli, E. Roayaie, M. S. Karambeigi
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Energy & Fuels
Kaveh Mohammadi, Forough Ameli
Article
Energy & Fuels
Forough Ameli, Abdolhossein Hemmati-Sarapardeh, Afshin Tatar, Arsalan Zanganeh, Shahab Ayatollahi
Article
Energy & Fuels
Abdoihossein Hemmati-Sarapardeh, Mohammad Ahmadi, Forough Ameli, Bahram Dabir, Amir H. Mohammadi, Maen M. Husein
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Mehdi Fadaei, Forough Ameli, Seyed Hassan Hashemabadi
Summary: Various methods for multiphase flow metering were introduced in this study, including using Coriolis flow meter to measure gas-liquid average density and determining gas volume fraction by discharge coefficient of an orifice plate. The application of Orifice plate and Coriolis flow meters for gas-liquid flow metering was investigated, along with predicting gas volume fraction using a soft sensor. Among various computational intelligence methods, the 3-layer neural network performed the best with a mean square error of 0.91% and mean absolute percent error of 3%.
Article
Multidisciplinary Sciences
Seyed Hosein Hayatolgheibi, Forough Ameli, Mohammad Reza Moghbeli
Summary: Hydrogels are increasingly used in oil recovery processes to control fluid flow in porous media. The authors synthesized pH-sensitive hydrogel microspheres, which effectively increased the oil recovery factor in experiments. In this study, a phase-field approach was used to simulate the process and obtain the model's tuning parameters. The diffusion of hydrogels and the mechanisms of breakage, deformation, and plugging were analyzed. The results showed good agreement between experimental and modeling studies, with absolute errors of 2.29% and 4.06% for water and hydrogel flooding, respectively. The tuned parameters of the model were reported.
SCIENTIFIC REPORTS
(2022)
Article
Meteorology & Atmospheric Sciences
J. F. Brewer, D. J. Jacob, S. H. Jathar, Y. He, A. Akherati, S. Zhai, D. S. Jo, A. Hodzic, B. A. Nault, P. Campuzano-Jost, J. L. Jimenez, R. J. Park, Y. J. Oak, H. Liao
Summary: We propose a new Volatility Basis Set (VBS) representation for aromatic Secondary Organic Aerosol (SOA) and apply it to atmospheric chemistry models. Our scheme was able to simulate the observations of organic aerosol (OA) from the KORUS-AQ field campaign better than the default schemes used in GEOS-Chem, showing improved representation of vertical profiles, diurnal cycle, and partitioning between hydrocarbon-like OA and oxidized OA. Our results confirm the significant contributions of oxidized primary OA, aromatic SOA, and semi- and intermediate volatile organic compounds (S/IVOCs) to the OA budget in South Korea.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Ali Akherati, Yicong He, Lauren A. Garofalo, Anna L. Hodshire, Delphine K. Farmer, Sonia M. Kreidenweis, Wade Permar, Lu Hu, Emily Fischer, Coty N. Jen, Allen H. Goldstein, Ezra J. T. Levin, Paul J. DeMott, Teresa L. Campos, Frank Flocke, John M. Reeves, Darin W. Toohey, Jeffrey R. Pierce, Shantanu H. Jathar
Summary: Wildfires are a significant source of organic aerosol (POA and SOA) in the atmosphere at regional and global scales. This study develops a kinetic model to simulate the behavior of organic aerosol in wildfire smoke and applies it to study smoke plumes intercepted during a field campaign in the western United States. The model suggests that the evolution of organic aerosol mass with physical age can be explained by dilution-driven evaporation of primary aerosol and simultaneous photochemical production of secondary aerosol.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Environmental Sciences
Anna L. Hodshire, Emily Ramnarine, Ali Akherati, Matthew L. Alvarado, Delphine K. Farmer, Shantanu H. Jathar, Sonia M. Kreidenweis, Chantelle R. Lonsdale, Timothy B. Onasch, Stephen R. Springston, Jian Wang, Yang Wang, Lawrence Kleinman, Arthur J. Sedlacek, Jeffrey R. Pierce
Summary: Initial smoke organic aerosol mass concentrations can predict changes in smoke aerosol aging markers, number concentration, and number mean diameter; cores of plumes have higher concentrations than edges; on the plume edges, the organic aerosol is more oxygenated, while a marker for primary biomass burning aerosol emissions has decreased in relative abundance compared to the plume cores.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Abdolhossein Hemmati-Sarapardeh, Forough Ameli, Mohammad Ahmadi, Bahram Dabir, Amir H. Mohammadi, Leila Esfahanizadeh
JOURNAL OF MOLECULAR STRUCTURE
(2020)
Article
Chemistry, Analytical
Yicong He, Brandon King, Matson Pothier, Liam Lewane, Ali Akherati, James Mattila, Delphine K. Farmer, Robert L. McCormick, Matthew Thornton, Jeffrey R. Pierce, John Volckens, Shantanu H. Jathar
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2020)
Article
Environmental Sciences
Sheena E. Martenies, Ali Akherati, Shantanu Jathar, Sheryl Magzamen
Article
Environmental Sciences
Ali Akherati, Christopher D. Cappa, Michael J. Kleeman, Kenneth S. Docherty, Jose L. Jimenez, Stephen M. Griffith, Sebastien Dusanter, Philip S. Stevens, Shantanu H. Jathar
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2019)
