Results 61 to 70 of about 1,915 (207)

Investigation the effect of different ionic liquids based-aryl imidazole on the onset precipitation of asphaltene

Scientific Reports, 2023
Precipitation and deposition of asphaltene are considered as catastrophic issues facing the petroleum industry. Asphaltene deposition mainly occurs at variety places such as formation pore spaces, pumps, pipelines, wellbore, wellhead, tubing, surface ...
Raghda A. El-Nagar, Maher I. Nessim, Dina A. Ismail, Manal G. Mohamed, Alaa Ghanem   +4 more
doaj   +1 more source

On the evaluation of asphaltene adsorption onto dolomite surface: The roles of flow condition, composition of asphaltene, and dolomite size

Alexandria Engineering Journal, 2022
Asphaltene precipitation/deposition is one of the main problems in petroleum industry at various stages. In this study, various controlling factors on the adsorption of different types of asphaltene on the surface of dolomite of different size, as one of
Sajjad Ansari, Hamid Bahmaninia, Mohammad-Reza Mohammadi, Mehdi Ostadhassan, Saeid Norouzi-Apourvari, Mahin Schaffie, Mohammad Ranjbar, Abdolhossein Hemmati-Sarapardeh   +7 more
doaj   +1 more source

Reversibility and inhibition of asphaltene precipitation in Brazilian crude oils

, 2015
A fundamental understanding of the aggregation and precipitation of asphaltenes in petroleum crudes is important for the development of preventive and curative measures for the potential problem of asphaltene deposition occurring during production ...
Mohamed, RS, Loh, W, Delgado, CC, Almeida, VR, Ramos, ACS   +4 more
core   +1 more source

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald, A. B. Frank, D. Birgel, K. Senger, T. Mosociova, Y. Pei, B. Beaty, L. G. Tarhan, F. Galasso, M. A. Gómez Correa, S. E. Grasby, U. Struck, D. Yuan, R. Steinkrauss, J. Gliwa, N. Lahajnar, J. Peckmann, W. J. Foster   +17 more
wiley   +1 more source

Interrelationship Between Asphaltene Precipitation Methods and Asphaltene Characteristics and Self-Association Behavior

, 2017
Asphaltene self-association and precipitation are unfavorable processes that can occur during production, transportation, and storage of crude oils.
S.. Afra, H. G. Alrashidi, H. A. Nasr-EL-Din   +2 more
core   +1 more source

Experimental Investigation and Modeling of Asphaltene Precipitation Due to Gas Injection [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2012
Asphaltene instability is one of the major problems in gas injection projects throughout the world. Numerous models have been developed to predict asphaltene precipitation; The scaling equation is an attractive tool because of its simplicity and not ...
Siyamak Moradi, Davood Rashtchian, Mostafa Ganjeh Ghazvini, Mohammad Ali Emadi, Bahram Dabir   +4 more
doaj  

Screening of inhibitors for remediation of asphaltene deposits: Experimental and modeling study

Petroleum, 2018
One of the most severe problems during production from heavy crude oil reservoirs is the formation of asphaltene precipitation and as a result deposition in the tubing, surface facilities and near wellbore region which causes oil production and ...
Mehdi Madhi, Riyaz Kharrat, Touba Hamoule   +2 more
doaj   +1 more source

Asphaltene Deposition Modeling during Natural Depletion and Developing a New Method for Multiphase Flash Calculation [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2016
The specific objective of this paper is to develop a fully implicit compositional simulator for modeling asphaltene deposition during natural depletion.
Gholamreza Fallahnejad, Riyaz Kharrat
doaj   +1 more source

Evaluation of the Influence of Antifoam Formulations on Asphaltene Aggregates Using AFM and SEM‐EDS

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
ABSTRACT Asphaltenes, naturally occurring surfactants in crude oil play a pivotal role in stabilizing oily foams during primary oil processing. Accordingly, understanding how antifoam formulations influence asphaltene aggregation is essential. This study investigates the effect of polydimethylsiloxane (PDMS) with varying molar masses on asphaltene ...
Mariana Teixeira Mendes, Andressa Oliveira dos Santos, Rafael Farias Perez, Osvaldo Karnitz Junior, Claudia Regina Elias Mansur   +4 more
wiley   +1 more source

Liquid–liquid equilibrium studies of n‐butane–bitumen system with application to solvent‐aided in situ bitumen recovery

The Canadian Journal of Chemical Engineering, Volume 104, Issue 1, Page 425-441, January 2026.
Abstract Solvent‐assisted recovery methods have gained attention as an alternative to conventional thermal methods which have significant environmental drawbacks and high greenhouse gas emissions. Solvent‐assisted recovery methods can lead to various phase equilibria, such as vapour–liquid equilibrium (VLE) and liquid–liquid equilibrium (LLE), under ...
Amr Mahgoub, Mohammad Shah Faisal Khan, Mahmood Abdi, Hassan Hassanzadeh   +3 more
wiley   +1 more source