Experience in the Application of Hydrocarbon Optical Studies in Oil Field Development

Raupov, Inzir; Burkhanov, Ramis Nurutdinovich; Lutfullin, Azat; Maksyutin, Alexander Valeryevich; Lebedev, A. B.; Safiullina, Elena

doi:10.3390/en15103626

Cited by 21 publications

(9 citation statements)

References 69 publications

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“…The synthesis of fatty acid ethyl esters was carried out at ethanol excess in a stirred tank reactor in Auto-MATE system H.E.L (Figure 6) with a reflux condenser and a magnetic stirrer [43][44][45]. The volumetric ratio of ethanol to oil was maintained at 1:1, 2:1, 3:1, 4:1 and 5:1.…”

Section: Synthesis Of Fatty Acid Esters (Faes)mentioning

confidence: 99%

A New Approach for Synthesizing Fatty Acid Esters from Linoleic-Type Vegetable Oil

Kosolapova,

Smal,

Rudko

et al. 2023

Processes

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Countries around the world recognize the numerous social, economic and environmental advantages of promoting liquid biofuels. They invest in its development and introduce tax incentives for its manufacture and tariffs of production regulation. In most studies, the process of synthesizing fatty acid esters takes a long time from 1 to 8 h. In this work, the synthesis of fatty acid esters was carried out in the range of volumetric ratios of ethanol to linoleic type oil in order to increase the kinetics of the process. The main parameters of the synthesis were studied by use of magnetic stirred tank reactors in a parallel reactor system, H.E.L. The synthesis was carried out in the presence of a homogeneous alkaline catalyst. The volumetric ratio of ethanol to oil was maintained at 1:1, 2:1, 3:1, 4:1 and 5:1. The amount of catalyst added to the reaction mixture ranged from 0.25 to 2.5% by the weight of the reaction alcohol. The dryness of ethanol varied from 91 to 99%. Effective process conditions have been established to reduce the reaction time from 2.5 h to 5 min while maintaining a high degree of conversion. The results obtained during the study suggest the possibility of using a continuous reactor to produce fatty acid esters from linoleic raw materials containing up to 16% of free fatty acids. This also means the possibility of using second generation biofuel feedstock.

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Section: Synthesis Of Fatty Acid Esters (Faes)mentioning

confidence: 99%

A New Approach for Synthesizing Fatty Acid Esters from Linoleic-Type Vegetable Oil

Kosolapova,

Smal,

Rudko

et al. 2023

Processes

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“…Sand production occurs in a wide range of hydrocarbon reservoirs, both composed of relatively young rocks of the Quaternary period and consolidated reservoirs at the final stages of development (1). Sand-related challenges significantly disrupt the oil production process, since it adversely affects the complex of subsurface and surface equipment and creates difficulties in the operation of wells (2,3). The topic of horizontal wells operation with sand production is particularly relevant.…”

Section: Introductionmentioning

confidence: 99%

Scientific and Methodological Support of Sand Management During Operation of Horizontal Wells

Tananykhin

2024

IJE

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The paper presents a new scientifically based approach for the selection of sand control technology, which is dedicated to enhance the efficiency of the development of unconsolidated reservoirs. Established laboratory and methodological complexes for physical simulating of the sand producing process were analyzed in order to obtain new knowledge and confirm the available theories. All of them have their advantages and disadvantages, but their simultaneous application revealed characteristic dependencies between the sand production and the studied parameter (grain size distribution, pressure drop, clay content, water cut, gas/oil ratio, etc.). Author proposed concepts of mathematical apparatus improvement to increase the quality of assessing the ability of formation fluids to transport particles of different grain size distribution within the formation, as well as in the inner part of tubing. The effect of each of the characterizing factors on suspended solids concertation (SSC) was studied as a result of more than 300 laboratory experiments. According to the observation, there is a sharp decrease in SSC after the first stage (sampling). Thus, the author determined that the main inflow of mechanical impurities occurs during flow stimulation and after shutdowns. In conclusion, author substantiated the method for limiting sand production using polymers with shape memory based on the results of the performed set of tests. Proposed method allows limited passage of particles with diameter less than 50 µm, which creates conditions for noncolmaticity of screen while maintaining geomechanical stability of bottom-hole formation zone.

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“…Vietnamese oil and gas companies mainly apply traditional paraffin deposition methods during production, such as mechanical methods, hot-oil circulation, and superheated steam treatment. In addition, in some production wells, a pour point depressant (PPD) metering pump system is installed into the production oil stream at a depth of about 2000-2500 m to remediate the formation of paraffin deposition in the tubing (Akhmadeev et al 2016;Podoprigora et al 2017;Raupov et al 2022).…”

Section: Introductionmentioning

confidence: 99%

A comprehensive method for determining the dewaxing interval period in gas lift wells

Van

Pham²,

Рогачев

et al. 2023

J Petrol Explor Prod Technol

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The gas lift method is an artificial lift method of well production using the energy of compressed gas injected into the well to lift the reservoir fluid to the surface. The formation of paraffin deposits has remained one of the critical oil production problems due to the growing percentage of hard-to-recover reserves in the overall structure. This complication is also typical for many oil and gas fields in Vietnam, such as the White Tiger, White Bear, and Dragon fields. Wax deposit formation negatively affects the operation of individual production wells and the development of the field as a whole, which leads to a decrease in productivity and the need to take measures to remove paraffin deposits, subsequently increasing the downtime period of the well. In order to ensure stable production of highly paraffinic oil, it is necessary to take measures to dewax wells systematically. The frequency of wax removal operations depends on the intensity of the wax formation, which is determined by various technological, technical, and geological factors. The interval between dewaxing operations is called the dewaxing interval period (DIP). This value is an important technological parameter and characterizes the efficiency of a well’s operation. In this study, a comprehensive method has been developed to determine the dewaxing interval period (treatment interval) for gas-lift wells when the formation of wax deposits has occurred. The optimal dewaxing interval period is suggested to be determined by the change in the liquid well flow rate at the point when it falls by 20% from the initial value. In addition, a mathematical model of the time-dependent wax thickness, taking into account the heat and mass transfer laws and the laboratory results using the Cold Finger method, has also been developed. The proposed model for determining the dewaxing interval period was applied to an oil well in Vietnam. The DIP prediction model gave a similar value to the actual DIP field data (6.67 and 6 days, respectively). The obtained results showed that the model had proven its accuracy following the results of a comparison with the field's data of dewaxing operations.

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Experience in the Application of Hydrocarbon Optical Studies in Oil Field Development

Cited by 21 publications

References 69 publications

A New Approach for Synthesizing Fatty Acid Esters from Linoleic-Type Vegetable Oil

A New Approach for Synthesizing Fatty Acid Esters from Linoleic-Type Vegetable Oil

Scientific and Methodological Support of Sand Management During Operation of Horizontal Wells

A comprehensive method for determining the dewaxing interval period in gas lift wells

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