Results 21 to 30 of about 6,753 (224)
Energies, 2023 Asphaltene precipitation/deposition is considered a problem of formation damage, which can reduce the oil recovery factor. In addition, asphaltenes can be deposited in pipelines and surface installations, causing serious complications in guaranteeing ...
Camilo Andrés Guerrero-Martin +8 more
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Fuel Communications, 2023 Injection of natural/associated gas is widely used as an efficient method of enhanced oil recovery in carbonate oil reservoirs in both miscible and immiscible conditions. Due to reservoir oil compositional changes by injected gas, asphaltenes instability
Saber Mohammadi, Fatemeh Mahmoudi Alemi
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Factors Affecting Asphaltenes Stability [PDF]
, 2023 Asphaltenes represent the heaviest and the most polar fraction of crude oil. Asphaltenes precipitation within the reservoir pores or production flow lines can severely hamper petroleum extraction process.
Punase, Abhishek
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Experimental Studies on the Adsorption/Occlusion Phenomena Inside the Macromolecular Structures of Asphaltenes [PDF]
, 2012 International audienceAsphaltenes are the polar macromolecules with complex structures in oils, usually existing as aggregates. Inside the macromolecular structures of asphaltenes, some other fractions can be adsorbed/occluded, and the occluded compounds
Liao, Zewen +10 more
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Stability and demulsification of emulsions stabilized by asphaltenes or resins [PDF]
, 2004 Experimental data are presented to show the influence of asphaltenes and resins on the stability and demulsification of emulsions. It was found that emulsion stability was related to the concentrations of the asphaltene and resin in the crude oil, and ...
Lu, SW, Xia, LX, Cao, GY
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From Problematic Asphaltenes towards Hyper-crosslinked Polymeric Structures [PDF]
, 2023 The nanoaggregate formation of asphaltenes, the heaviest component of crude oil, is an important scientific challenge. The nanoaggregates of asphaltenes show polymeric behavior in solution, allowing the determination of average molecular mass by ...
Salim Ok (17283883)
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Georesursy, 2018 NMR spectroscopy in combination with elemental analysis was used to study asphaltenes in biodegraded oils from Cenomanian pools of West Siberia. The sampling depths vary from 680 to 1800 m, formation temperatures – from 40°C to 70°C.
L.S. Borisova, E.A. Fursenko
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Scientific Reports, 2022 Asphaltenes from bitumen are abundant resource to be transformed into carbon as promising supercapacitor electrodes, while there is a lack of understanding the impact from different fractions of bitumen and asphaltenes, as well as the presence of ...
Dinesh Mishra +6 more
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Alkylation of Asphaltenes [PDF]
, 2016 This work investigated different acid catalysts and olefinic alkylating agents for the alkylation of an industrial asphaltenes feed. The working hypothesis was that alkylation would change the solubility parameter and increase the H/C ratio of ...
Mao, Xiaohui
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Oil & Gas Science and Technology, 2006 Crude oils contain a variety of components - including asphaltenes - that can adsorb onto mineral surfaces and alter wetting. What distinguishes the asphaltenes from other constituents of an oil is their tendency to aggregate and even separate from the ...
Buckley J. S.
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