Regulating temperature of oil saturation with paraffins to avoid asphaltene, resin and paraffin substances deposition during oil production

Валиев, Д. З.; Kemalov, Ruslan Alimovich; Кемалов, А. Ф.

doi:10.1088/1755-1315/282/1/012023

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…As can be seen from Figure 3a, for the studied paraffins, a decrease in temperature causes a regular decrease in the volume of their melts and an increase in the strength of the structures being formed [12,13]. In this case, in the temperature range from the onset of crystallization to the modification phase transition, the process of accumulation of the dispersed phase of paraffin and the formation of a spatial structure occurs, accompanied by a sharp decrease in the sample volume and a slow increase in strength.…”

Section: Resultsmentioning

confidence: 99%

“…It is clear that loose and semi-liquid crystalline deposits can be relatively easily removed by a natural fluid flow during oil transportation, without causing any complications, and, on the contrary, dense and durable deposits formed mainly from nalkanes create serious complications, the elimination of which a lot of money and labor is spent. Only reliable monitoring of the presence of a solid paraffin phase in the flow will allow the timely use of existing means to prevent and in the case of already deposited paraffins to remove deposits [9,10], the most common and most effective of which are thermal methods as well as chemical reagents [9,[11][12][13].…”

Section: Figure 1 Lamellar Paraffin Crystalsmentioning

confidence: 99%

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Analysis of the Structure of Viscous Oil Flow for the Development of a System to Prevent the Formation of Paraffin Deposits in Pipelines

Kopteva

Dementyev

Koptev

2021

MSF

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The detection of paraffin deposits in the systems of main oil pipelines today is a very important problem, since they lead to emergency oil spills, environmental disasters and economic losses both for the enterprise and for the country as a whole. This work is aimed at studying the physicochemical properties of asphaltic resin paraffins, as well as the mechanism of phase transition from liquid to crystalline. Such studies make it possible to estimate the absorption coefficient of the paraffin phase, which was previously not possible due to the complex nature of oil, consisting of hydrocarbons and many organic compounds of various molecular weights, and to provide high-precision non-contact measurements of the concentration of suspended asphalt-resin-paraffins in the oil flow in the pipeline. The analysis of the morphology and chemical composition of paraffins of various deposits is carried out, the dependence of the phase transition depending on the temperature gradient is determined.

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Section: Resultsmentioning

confidence: 99%

Section: Figure 1 Lamellar Paraffin Crystalsmentioning

confidence: 99%

Analysis of the Structure of Viscous Oil Flow for the Development of a System to Prevent the Formation of Paraffin Deposits in Pipelines

Kopteva

Dementyev

Koptev

2021

MSF

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“…To avoid these side effects, the authors propose the optimization of the existing control systems for electric heating of oil pipelines by implementing the developed measuring system, which will ensure measuring the desired values and bring economic benefits already at the stage of implementation. Currently, the voltage control action in all electrical heating systems, including promising skin cables, is formed according to the readings of temperature sensors [19,20]. This approach, prior to the advent of the techniques for direct detection of pipeline paraffinisation, was the only available option; however, it has low efficiency and can be significantly improved by the introduction of a new method for direct detection of paraffinisation.…”

Section: Discussionmentioning

confidence: 99%

Development of methods for determining the relative weight of physical factors in pipeline paraffinization

Kopteva

Ushkova

2021

E3S Web Conf.

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The paper is devoted to the development of a system for predicting pipeline paraffinisation, which is a matter of urgency in oil transportation to ensure resource-saving and facilitating sustainable development of the oil industry. The paper focuses on the composition analysis of measuring instruments, the combined use of which can fix the values of all physical parameters right at the time of paraffin formation. To date, the need for such measurements is due to the absence of a precise model for the process of formation of paraffin deposits and correlating dependencies between the process of paraffinisation and physical factors causing it, as well as the absence of possibility to create a forecasting system without this information. Its creation has become possible as a result of introducing advanced methods for measuring the degree of pipeline paraffinisation and oil stream viscosity, critical for the aforesaid data collection. The paper discusses the process of pipeline paraffinisation, presents the selected methods for measuring the desired values, as well as describes the required measuring equipment. The developed system of sensors is characterized by the absence of contact with the medium being measured, full automation, and minimum number of elements. Economically feasible stages of the system development and implementation were selected.

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“…The use of customized information processing algorithms also allows determining oil viscosity with high accuracy. The said performance capabilities of the measuring system create significant prospects for the development of many control systems [22][23][24][25]. The introduction of a radioisotope measuring unit into the automated control system for electric heating of oil equipment will not only significantly increase the energy Fig.…”

Section: Discussionmentioning

confidence: 99%

Development of a system for automated control of oil transportation in the Arctic region to prevent the formation of paraffin deposits in pipelines

et al. 2019

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The paper introduces a unique methodology of preventing and controlling the formation of paraffin deposits in oil pipelines, which is a matter of urgency in regions with negative temperatures, including the Arctic regions. The paper presents the configuration and specific parameters of the developed measuring unit. The proposed measuring unit is capable of detecting the formation of a paraffin layer during its early stages and predicting its composition. Simultaneous use of two radioisotope sensors allows increasing the performance capabilities of the measuring unit, namely to detect the formation of a paraffin layer in the early stages and to issue a signal to amplify the control signal to control the oil pipeline paraffinisation. In addition, the use of a radioisotope unit instead of a single sensor will increase the accuracy of component-wise flow rate measurement, by making an allowance for paraffin deposits formation. The use of customized information processing algorithms also allows determining oil viscosity with high accuracy. The paper deals with an optimization of a system for automated control of a promising method of electric heating via the skin-cables, wherein safety factors of up to 36% are currently used, i.e. in most cases, 1/3 excess electric power is generated. The safety of using the radioisotope measuring technique is proven.

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Regulating temperature of oil saturation with paraffins to avoid asphaltene, resin and paraffin substances deposition during oil production

Cited by 6 publications

References 2 publications

Analysis of the Structure of Viscous Oil Flow for the Development of a System to Prevent the Formation of Paraffin Deposits in Pipelines

Analysis of the Structure of Viscous Oil Flow for the Development of a System to Prevent the Formation of Paraffin Deposits in Pipelines

Development of methods for determining the relative weight of physical factors in pipeline paraffinization

Development of a system for automated control of oil transportation in the Arctic region to prevent the formation of paraffin deposits in pipelines

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