Relation of petroleum resins to asphaltenes

Koots, J.Anne; Speight, James G.

doi:10.1016/0016-2361(75)90007-1

Cited by 290 publications

(143 citation statements)

References 9 publications

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“…Resins are a fraction of petroleum about which relatively little is known 19 . Much Resins are considered smaller analogues of asphaltenes, with a much lower molecular weight.…”

Section: Resins -Role and Structurementioning

confidence: 99%

Changes in Asphaltene Microenvironments Evidenced by Fluorescence Solvatochromism

Pietraru

Cramb

2003

Langmuir

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This work involved the study of Cold Lake asphaltenes' behavior in toluene and o-dichlorobenzene. The changes in asphaltene microenvironments with the increase in asphaltene concentration were observed using fluorescence solvatochromism. The reporter molecule chosen was the environmentally sensitive fluorophore PRODAN. This procedure represents a novel and sensitive method to study asphaltene solutions, and might bring additional information to the existent database of asphaltene properties.A pre-aggregation model was developed to explain the experimental observations, and a definition for the critical aggregation concentration was proposed. The model is valid for low asphaltene concentrations and is supported by direct measurements of refractive indices for asphaltene solutions. Atomic force microscopy was used to image asphaltene entities. The size distribution indicated that asphaltene particles do not change significantly with the increase in concentration. The appearance of larger aggregates in solutions with concentrations above CAC might support the validity of the model.

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“…Resins are a fraction of petroleum about which relatively little is known 19 . Much Resins are considered smaller analogues of asphaltenes, with a much lower molecular weight.…”

Section: Resins -Role and Structurementioning

confidence: 99%

Changes in Asphaltene Microenvironments Evidenced by Fluorescence Solvatochromism

Pietraru

Cramb

2003

Langmuir

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“…This probably explains the existence of numerous normalised operating protocols corresponding to precipitations using n-heptane (ASTM D3279, IP 143, NFT 60 115). The de-asphalted oil is known as maltenes and contains resins, considered to be the peptising agents of asphaltenes (Koots and Speight, 1975;Swanson, 1942). The resins can also be separated from the maltenes by adsorption (Andersen and Speight, 2001).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Asphaltenes and Modelling of Flocculation – State of the Art

Pina¹,

Mougin²,

Béhar³

2006

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Caractérisation des asphaltènes et modélisation de la floculation -État de l'Art -Ce travail présente un état de l'art concernant la floculation des asphaltènes avec deux grands items : la caractérisation des asphaltènes dans différents milieux et la modélisation de la floculation. Cette revue commence par une caractérisation des asphaltènes proprement dite puis des caractérisations de ces derniers dans des solvants synthétiques ou des bruts. Nous insistons sur les techniques de détermination de masses molaires et de diffraction. L'incidence d'un ajout de bon/mauvais solvant est également discutée. La seconde partie de cette revue concerne la modélisation de la floculation. Elle examine les différents modèles de la littérature avant de présenter celui de Szewczyk et Béhar (1999) et son intégration dans un simulateur de réservoir. Les modèles disponibles requièrent encore des données expérimentales délicates à acquérir et un effort de recherche doit être réalisé pour améliorer cet état de fait. Abstract -Characterisation of Asphaltenes and Modelling of Flocculation -State of the Art -This document describes a state of the art concerning the flocculation of asphaltenes with two major sections: characterisation of asphaltenes in various environments and modelling of flocculation. This review starts with the characterisation of asphaltenes as such, then their characterisation in synthetic solvents or crudes. Emphasis is placed on molar mass determination and diffraction techniques. The impact of adding a good/poor solvent is also discussed. The second part of this review is dedicated to modelling.We first examine the various models in the literature before describing the Szewczyk and Béhar (1999) model and its integration in a reservoir simulator. The models available still require experimental data which is difficult to collect and further research is needed to improve this situation.Petroleum Industry Applications of Thermodynamics Applications de la thermodynamique dans l'industrie pétrolière

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“…С.Р. Сергиенко рекомен-дует как наиболее точный метод измерения моле-кулярного веса -криоскопическое определение в нафталине при высокой степени разбавления, по-скольку высокая температура застывания нафталина препятствует явлению ассоциации [2][3][4][5][6][7][8][9].…”

Section: Relationship Of Fractional Composition Supramolecular Strucunclassified

Relationship of Fractional Composition, Supramolecular Structure and Performance of Road Bitumen Part I

Sheina

Самохина

2015

UCA

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Relation of petroleum resins to asphaltenes

Cited by 290 publications

References 9 publications

Changes in Asphaltene Microenvironments Evidenced by Fluorescence Solvatochromism

Changes in Asphaltene Microenvironments Evidenced by Fluorescence Solvatochromism

Characterisation of Asphaltenes and Modelling of Flocculation – State of the Art

Relationship of Fractional Composition, Supramolecular Structure and Performance of Road Bitumen Part I

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