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   Articles with "asphaltene aggregation" as a keyword



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Molecular dynamics simulation of the effect of ions in water on the asphaltene aggregation

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recommendations! Published in 2019 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.12.067

Abstract: Abstract In this study, the effect of aqueous ions and sediment inhibitors on asphaltene aggregation was investigated. The effect of NaCl, MgCl2 and CaCl2 salts on three asphaltene models of M1, A1 and modified Yen… read more here.

Keywords: dynamics simulation; aggregation; molecular dynamics; simulation effect ... See more keywords
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In situ Analytical Microscopy of Asphaltene Aggregation and Growth

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recommendations! Published in 2017 at "Microscopy and Microanalysis"

DOI: 10.1017/s1431927617005323

Abstract: Asphaltenes are precipitated solids found in crude oils that are composed of aromatic hydrocarbons and small amounts of non-volatile species (S,K, Ca, P, V, Ni, Zn, ....) which when they form accumulate as deleterious deposits… read more here.

Keywords: aggregation growth; microscopy; analytical microscopy; asphaltene aggregation ... See more keywords
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Mechanisms of Asphaltene Aggregation: Puzzles and a New Hypothesis

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recommendations! Published in 2020 at "Energy & Fuels"

DOI: 10.1021/acs.energyfuels.0c01564

Abstract: In petroleum science, asphaltenes are well-known as the most refractory fraction of crude oil and remain infamous for problems in production, transportation, and refining processes. Hence, they hav... read more here.

Keywords: mechanisms asphaltene; puzzles new; aggregation puzzles; asphaltene aggregation ... See more keywords

Mechanism of asphaltene aggregation induced by supercritical CO2: insights from molecular dynamics simulation

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recommendations! Published in 2017 at "RSC Advances"

DOI: 10.1039/c7ra09736k

Abstract: The mechanisms of asphaltene aggregation leading to damage and wellbore plugging are still unknown, which is not conducive to finding effective solutions to the relevant problems of asphaltene precipitation in supercritical CO2 (scCO2) enhanced oil… read more here.

Keywords: aggregation; molecular dynamics; supercritical co2; asphaltene aggregation ... See more keywords
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Magnetic field influence on asphaltene aggregation monitored by diffusion NMR spectroscopy: Is aggregation reversible at high magnetic fields?

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recommendations! Published in 2019 at "Journal of Dispersion Science and Technology"

DOI: 10.1080/01932691.2018.1561302

Abstract: Abstract We have shown that asphaltene self-association induces temperature gradients and convection currents and it is necessary to suppress these effects to obtain accurate data by DOSY NMR techniques. An interesting finding of this investigation… read more here.

Keywords: aggregation; diffusion; asphaltene aggregation; spectroscopy ... See more keywords
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The effect of nonylphenol on asphaltene aggregation: A molecular dynamics approach

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recommendations! Published in 2019 at "Petroleum Science and Technology"

DOI: 10.1080/10916466.2017.1305402

Abstract: ABSTRACT Molecular dynamics (MD) simulations were performed to study the occurrence time of each stage of asphaltene aggregation from single molecules to a large flocculate with and without nonylphenol (NP) molecules as asphaltene dispersants. NPs… read more here.

Keywords: nonylphenol asphaltene; molecular dynamics; effect nonylphenol; asphaltene aggregation ... See more keywords