Analysis of the Current State of Researches of the Deposition of Asphalt-Resinous Substances, Paraffin, and Modeling Methods. Review  Part Ii: Wax Deposition

Manafov, M. R.; Aliyev, G.S.; Rustamova, A.I.; Kerimli, V. I.

doi:10.32737/0005-2531-2021-2-13-23

Cited by 2 publications

(2 citation statements)

References 18 publications

(27 reference statements)

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“…In this case, deposition effects for Stokes drops , for large size drops is expressed. Here, is the density of the drops, is the dynamic viscosity of the medium, is the relaxation time of the drop, and a is the size of the drop [13,14].…”

Section: Herementioning

confidence: 99%

Dependence of water drop settling speed on turbulent diffusion coefficient in oil and modeling of physical processes

Imran Karimli,

Rashid Shikhieva

2023

Jour. Y. Res.

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Oil emulsions are a component of oil raw material extraction and refining processes. The presence of dispersed water, mineral salts and solid phase particles, as well as asphalt-resin and paraffin substances dissolved in it, significantly changes the physical properties and structure of the oil emulsion. As a rule, oil emulsion separation is carried out in two stages. First, large drops are quickly deposited (surfaced) and undergo coalescence. Very small drops remain in the form of "fog" and are deposited for a long time by forming an intermediate layer in the apparatus. The rate of stratification in most cases determines the productivity of the extraction process.The emulsion formed when oil is mixed with reservoir water should be considered as a mechanical mixture of two insoluble liquids (oil and water). At this time, one of the liquids is distributed in the form of drops of different sizes in the volume of the other.Due to the presence of water in the oil, the increase in the volume and viscosity of the transported liquid, the transportation cost becomes more expensive. Water solutions containing mineral salts cause wear and tear of oil-transporting devices and oil-refining equipment. The presence of even 0.1% water in the oil causes intense foaming of the oil in the rectification cylinders of oil refineries, which causes a violation of the processing regime and, in addition, contamination of condensation devices.

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Section: Herementioning

confidence: 99%

Dependence of water drop settling speed on turbulent diffusion coefficient in oil and modeling of physical processes

Imran Karimli,

Rashid Shikhieva

2023

Jour. Y. Res.

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“…Heavy oil/bitumen is characterized in terms of SARA fractions and divided into four different pseudo-components such as saturates, aromatics, resins and asphaltenes. A four-parameter equation of state developed by Adachi et al is used to calculate the values of solubility parameters, molar volume, and density of each SARA fraction [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Rheology of a heavy crude oil

Rashid Shikhieva,

Imran Kariml,

Rizvan Manafov

2023

Jour. Y. Res.

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The growing demand for oil is encouraging the development of heavy oil and bitumen, the world's huge energy reserves. However, their high viscosity is a big problem in their use, because they cannot be transported without a proper method. A number of methods have been developed to transport heavy oil, including diluents, heated pipelines, emulsions, and crude oil upgrades.It is known that the common characteristics of heavy oil are high viscosity, high specific gravity, high molecular content and low hydrogen-to-carbon ratio, high carbon residues, and high content of asphaltenes, heavy metals, sulfur, and nitrogen. Heavy oils are a strategic source of hydrocarbons because their reserves are on the same scale as those of conventional oils. The production of these raw materials remains low, especially due to their very high viscosities.Heavy oil rheology problems caused by the hydrodynamic interaction of heavy particles in oil (asphaltenes, paraffin, resins, and solid phase particles) were considered in the research work. Transporting heavy crude oil requires the viscosity to be low enough so that pipeline size and pumping requirements are economically optimal. There are several methods to achieve these properties, some of which have been validated in the field and are currently in use, while others are under development. In our current research work, we have analyzed some of these methods and given our recommendations for improving the rheology of heavy oils for the future.

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Analysis of the Current State of Researches of the Deposition of Asphalt-Resinous Substances, Paraffin, and Modeling Methods. Review Part Ii: Wax Deposition

Cited by 2 publications

References 18 publications

Dependence of water drop settling speed on turbulent diffusion coefficient in oil and modeling of physical processes

Dependence of water drop settling speed on turbulent diffusion coefficient in oil and modeling of physical processes

Rheology of a heavy crude oil

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