Review
Energy & Fuels
Isah Mohammed, Mohamed Mahmoud, Dhafer Al Shehri, Ammar El-Husseiny, Olalekan Alade
Summary: The deposition of asphaltene in reservoirs and pipelines leads to serious flow assurance challenges with significant economic implications. Various preventive and corrective measures have been proposed, but the discussion on the best model and cost-effective prevention strategy is ongoing.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Wei Liu, Daoyin Liu, Yingjuan Zhang, Bo Li
Summary: In this study, the Eulerian-Eulerian model with Population Balance Model (PBM) is used to predict the particle size distribution (PSD) of SiO2 particles in the MCVD process, and the Discrete Particle Model (DPM) is used to investigate the trajectories and deposition locations of the particles. The results show that the deposition distance and flight time of the particles increase with the increase of particle size and wall temperature.
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.
Review
Energy & Fuels
Jia Meng, Somasekhara Goud Sontti, Xuehua Zhang
Summary: This review compares asphaltene precipitation and dilution-induced solvent shifting in aqueous systems, highlighting similarities and differences in nanodroplet evolution, as well as mutual experimental techniques and modeling approaches. The review introduces advances in microfluidic systems and cutting-edge experimental and simulation tools for better understanding and control of asphaltene precipitation and the ouzo effect.
Article
Engineering, Petroleum
Xin Su, Rouzbeh G. Moghanloo, Minhui Qi, Xiang-an Yue
Summary: The study proposed an integrated simulation approach to predict permeability impairment in porous medium, considering porosity reduction, particle aggregation, and pore connectivity loss caused by asphaltene deposition. By integrating the particle aggregation model, the prediction of asphaltene deposition in porous media was improved. Sensitivity analysis revealed that longer aggregation time, higher flow velocity, and bigger precipitation concentration lead to faster permeability reduction, ultimately providing insights for predicting production performance of oil wells.
Article
Engineering, Chemical
Jinhui Li, Zhiming Xu, Zhimin Han
Summary: In this study, a particle deposition model based on the Eulerian approach is proposed to predict the dynamic deposition process of multi-sized particles on heat exchange surfaces. The model takes into account the particle size distribution and the interaction between particles. By coupling computational fluid dynamics analysis with a population balance model, the deposition characteristics of multi-sized particles are predicted. The simulation results are shown to be in good agreement with experimental data, with reduced average relative deviations and higher deposition velocities and mass for multi-sized particles compared to average-sized particles.
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
Energy & Fuels
Evgeniya Hristova, Plamen Tchoukov, Stanislav R. Stoyanov, Richard McFarlane
Summary: This study investigates asphaltene precipitation during water separation for SAGD bitumen with the addition of paraffinic solvent. It proposes that asphaltene precipitation is a progression rather than a single onset, starting below critical dilution and gradually increasing. The study also suggests that there are three stages of precipitation: surface asphaltene precipitation onset, initial bulk onset, and massive bulk onset. The NIR technique effectively detects the initial and massive bulk onsets but not the surface onset.
Article
Chemistry, Physical
Govindan Induchoodan, Helen Jansson, Amir Saeid Mohammadi, Jan Swenson
Summary: Graphene derivatives have been used as additives to enhance the properties of bitumen. However, previous research found that the poor compatibility between graphene derivatives and asphaltene aggregates in bitumen leads to negative effects. In this study, a surface chemistry modification of graphene was conducted to achieve phase compatibility with asphaltene aggregates. The functionalized graphene was stable in bitumen and successfully improved its material properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
He Zhang, Yong Liu, Peihui Han, Shuoshi Wang, Huarong Yan, Ping Guo, Jiang Zhang, Zhenqiang Bai, Zhouhua Wang, Haoxiang Hukuang, Xuyang Li
Summary: A unique experiment design is proposed to study the asphaltene precipitation during gas injection, quantifying the precipitation at different methane contact steps. The formation damage caused by asphaltene precipitation is investigated through core flooding tests for three different permeability cases.
Review
Energy & Fuels
Hannah M. Stoner, Carolyn A. Koh
Summary: Particle agglomeration is crucial in gas hydrate accumulation and pipeline plugging, requiring complex mechanisms research and rheological model establishment. In situ particle probes and microscopes are essential for measuring particle size and interfacial interactions in the development of gas hydrate hydrodynamic multiphase flow models.
Article
Engineering, Chemical
Shirin Alexander, Andrew R. Barron, Nikolai Denkov, Paul Grassia, Sajad Kiani, Masanobu Sagisaka, Mohammad Javad Shojaei, Nima Shokri
Summary: This study investigated the impact of surfactant molecular structure on foam stability in various applications. It was found that the electrostatic repulsion between the foam film surfaces of anionic surfactants strongly influenced the process of foam generation and stability, with partially fluorinated surfactants showing better stability in the presence of oil. Additionally, asphaltene-oil mixtures were found to have a detrimental effect on foam stability, except for certain surfactants.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Syed Haider Abbas Rizvi, Anil Yadav, Jyoti Phirani, Vikram Singh
Summary: This study discusses the removal of asphaltene from inorganic silica surfaces using hydrodynamic forces. The results show that large aggregates of asphaltene can be removed from the surface with an increase in flow rates. The study also discusses the possible mechanism of asphaltene removal from the surface based on hydrodynamic force calculations.
Article
Biochemical Research Methods
Aranyak Chakravarty, Mahesh Panchagnula, Alladi Mohan, Neelesh A. Patankar
Summary: Pulmonary drug delivery systems rely on inhalation of drug-laden aerosols produced from aerosol generators such as inhalers, nebulizers etc. However, the transport and retention of drugs in the lungs play a crucial role in determining the efficacy of drug delivery. This study develops a mathematical model to analyze drug deposition and retention in the lungs and identifies conditions conducive for delivering drugs to the deep lungs. The analysis confirms that aerosols in the size range of 1-5 μm have the highest drug delivery efficacy to the deep lung, and increasing the breathing time period can increase the amount of drugs deposited in the deep lung.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Farzaneh Eskini, Amirhossein Saeedi Dehaghani, Mohammad Mahdi Shadman
Summary: In this study, the Flory-Huggins theory was modified to predict asphaltene precipitation with and without inhibitors, showing the model accuracy and average error. The results indicate that the addition of inhibitors can delay asphaltene precipitation.
SCIENTIFIC REPORTS
(2022)
