Determination of the molecular weight of asphaltenes by the thermoelectric technique

Ratovskaya, A. A.

doi:10.1007/bf00723130

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…One of the best approaches to describe an oil mixture is SARA separation which is an analytical approach to categorize oil into four fractions based on their polarity as saturates, aromatics, resins and asphaltenes (Aske et al 2001;Aske 2002;Goel et al 2017). Asphaltene is the polyaromatic fraction of the crude oil with a wide range for molecular mass reported in the literature, to name a few, from 700 to 40,000 (Ratovskaya 1968), 1000-50,000 g/mol (Ali and Al-Ghannam 1981), 3200 ± 400 g/mol (Acevedo et al 2005b) and 300-1400 g/ mol (Akbarzadeh et al 2007). However, the latest, and more probable value, was reported by Mullins et al (2012) to be around 750 g/mol.…”

Section: Introductionmentioning

confidence: 99%

A review on methods of determining onset of asphaltene precipitation

Soleymanzadeh

Yousefi

Kord

et al. 2018

J Petrol Explor Prod Technol

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Oil industry suffers from flow assurance problems that occur both in upstream and downstream operations. One of the common flow assurance issues arises from precipitation and deposition of asphaltenes in various locations along the oil production path including near wellbore region in the reservoir, production tubing, flowlines and separation unit at the surface. Asphaltene particles precipitate out of oil continuum due to changes in temperature, pressure or composition. Such changes in operating conditions occur during different recovery processes (natural depletion, gas injection, chemical injection, etc.) as well as production and blending of different oils during transportation. There are different experimental methodologies documented in the literature that describe how to determine onset of asphaltene precipitation. In this paper, a comprehensive review is performed on all the available procedures to measure onset of asphaltene precipitation. The advantages and limitations associated with all these methods are also documented.

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Section: Introductionmentioning

confidence: 99%

A review on methods of determining onset of asphaltene precipitation

Soleymanzadeh

Yousefi

Kord

et al. 2018

J Petrol Explor Prod Technol

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show abstract

“…Contrary to the non-polar crude oil as a whole, it is one of the few polar solvent parts of crude oil 1 . Inside the papers, the molar weights of asphaltene, the polyaromatic portion of crude oil, has been estimated to vary from 700 to 40,000 9 , 1000-50,000 g/mol 2 of 28 structure at the junction can be either liquid or solid, regardless of the solvent aromaticity, ageing period, or beginning bulk concentration. Yield stress of the film formed on the droplet may be present during the transitional stages as a possible energy barrier to drop coalescence.…”

Section: Introductionmentioning

confidence: 99%

Asphaltene Modeling, Emulsion, and Aggregation: A Review

Moud¹

2022

Preprint

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Asphaltene is a component of crude oil that, if mishandled, may create substantial transportation and industrial concerns. It is a solid by nature, with a diverse set of molecular compositions. Furthermore, the oil industry has identified emulsion generation and clogging precipitate as key concerns. The emulsified water droplets in the process are just what give the raw oil its increased viscosity; hence, power is squandered to transport the oil around. The information has been separated into sections based on simulation, solubilization, agglomeration, precipitation, and evidence of model chemicals in the literature. We have included research that investigates the bulk rheology and interfacial rheology of asphaltene to describe its interfacial activity more clearly.

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Determination of the molecular weight of asphaltenes by the thermoelectric technique

Cited by 2 publications

References 8 publications

A review on methods of determining onset of asphaltene precipitation

A review on methods of determining onset of asphaltene precipitation

Asphaltene Modeling, Emulsion, and Aggregation: A Review

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