Petroleum Asphaltenes - Part 1: Asphaltenes, Resins and the Structure of Petroleum [PDF]
Oil & Gas Science and Technology, 2004 The definition of the nonvolatile constituents of petroleum (i.e., the asphaltene constituents, the resin constituents, and, to some extent, part of the oils fraction insofar as nonvolatile oils occur in residua and other heavy feedstocks) is an operational aid. It is difficult to base such separations on chemical or structural features.
James G. Speight
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Mechanistic understanding of asphaltene precipitation and oil recovery enhancement using SiO2 and CaCO3 nano-inhibitors [PDF]
Scientific ReportsAsphaltene precipitation in oil reservoirs, well equipment, and pipelines reduces production, causing pore blockage, wettability changes, and decreased efficiency.
Ali Shadervan +4 more
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Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria [PDF]
Scientific ReportsIn the enhanced oil recovery (EOR) process, interfacial tension (IFT) has become a crucial factor because of its impact on the recovery of residual oil.
Arastoo Abdi +4 more
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Catecholamine Coated Maghemite Nanoparticles for Asphaltene Adsorption/Desorption Process [PDF]
Journal of Chemical and Petroleum Engineering, 2021 In this study, a nano-layer polydopamine (PDA) coated superparamagnetic maghemite nanoparticles (MNPs) was applied to investigate the asphaltene adsorption-desorption behavior using a model solution.
Behruz Mirzayi +3 more
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Investigation of Asphaltene Precipitation Using Response Surface Methodology Combined with Artificial Neural Network [PDF]
Journal of Chemical and Petroleum Engineering, 2019 The precipitation of asphaltene, one of the components of oil, in reservoirs, transfer lines, and equipment causes many problems. Accordingly, researchers are prompted to determine the factors affecting asphaltene precipitation and methods of avoiding ...
Zeinab Hosseini-dastgerdi +1 more
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Geofluids, 2021 Asphaltene deposition is a common phenomenon during CO2 flooding in ultralow permeability reservoirs. The deposited asphaltene occupies the pore volume and decreases permeability, resulting in serious formation damage and pore well productivity.
Li Rong-tao +6 more
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Asphaltene precipitation under controlled mixing conditions in a microchamber [PDF]
Chemical engineering journal, 2022, 2022 Solvent exchange is a controlled process for dilution-induced phase separation. This work utilizes the solvent exchange method to reveal the effect of the mixing dynamics on the asphaltene precipitation process under 20 different mixing conditions using a model system of n-heptane and asphaltene in toluene.
arxiv +1 more source
Chemical study of asphaltene inhibitors effects on asphaltene precipitation of an Iranian oil field
Oil & Gas Science and Technology, 2020 The amount of precipitated asphaltene can be considerably reduced with pretreatment of asphaltene inhibitor, in the crude oil. Efficiency of asphaltene inhibitors mainly depends on some parameters such as pH of the oil and the chemical structure of ...
Ahmadbaygi Afshar +4 more
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Dispersion potential of asphaltene in live oil by nanoparticles
地质科技通报, 2023 Objective In order to clarify the effect and mechanism of nanoparticles on inhibiting asphaltene precipitation in formation live oil formation under high temperature and high pressure.
Zhuanying Zhan, Jun Ni
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Journal of Chemistry, 2021 Asphaltene aggregation and precipitation are one of the major issues for marine low-sulfur fuel oil used on board. Many research studies have been carried out to investigate the aggregation behavior of asphaltene under different conditions, but the ...
Daping Zhou +5 more
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