2019
DOI: 10.3390/en12163084
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Ultrasonic and Heat Treatment of Crude Oils

Abstract: One of the methods of influence on rheological properties of heavy high-viscosity crude oils is ultrasonic treatment. Ultrasonic treatment allows reducing the viscosity of crude oil and, therefore, reducing the costs of its production and transportation. In this paper, the influence of ultrasonic treatment on the rheological characteristics of crude oil (sample No. 1 API = 29.1, sample No. 2 API = 15.9) was investigated. An experimental method was developed. Experimental studies were carried out using the Phys… Show more

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Cited by 17 publications
(7 citation statements)
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References 41 publications
(51 reference statements)
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“…For model (5) and observer Equations ( 6) and ( 7), it can be shown that the state and parameter errors: e x =x − x, e θ =θ − θ tend to zero as time tends to infinity. Assuming that the vector of unknown parameters θ is constant and by using Equations ( 5)-( 7), the time derivatives of state and parameter errors are:…”
Section: Estimation Of the Ultrasonic Powermentioning
confidence: 99%
See 1 more Smart Citation
“…For model (5) and observer Equations ( 6) and ( 7), it can be shown that the state and parameter errors: e x =x − x, e θ =θ − θ tend to zero as time tends to infinity. Assuming that the vector of unknown parameters θ is constant and by using Equations ( 5)-( 7), the time derivatives of state and parameter errors are:…”
Section: Estimation Of the Ultrasonic Powermentioning
confidence: 99%
“…Techniques related to sonochemistry and the phenomenon of cavitation are the basis for obtaining many natural products (e.g., proteins, oils, dyes, spices, bioethanol, etc.) without using toxic reagents, shortening the reaction time, increasing the reaction efficiency, product purity, improving efficiency of production processes, and reduction of reagent consumption [1][2][3][4][5]. The ultrasounds can also be used in degradation of chemical pollutants in water [6]; thus, the sonochemistry is seen as a "green" future technology, beneficial to the environment [1].…”
Section: Introductionmentioning
confidence: 99%
“…Water-in-oil (w/o) emulsions are formed during oil production and transportation through pipelines due to shear forces. Coproduction of water and crude oil may cause several problems such as increasing transportation costs, corrosion of oil production facilities, and enhancing the oil viscosity. Hence, water must be separated from crude oil before its transportation and subsequent refining. Various demulsification techniques have been introduced to separate water from oil which can be grouped into chemical, , mechanical, thermal, and electrostatic separation techniques. These approaches have successfully destabilized w/o emulsions to some extent, but each approach has limitations.…”
Section: Introductionmentioning
confidence: 99%
“…To date, fossil energy, such as oil and natural gas, has not been and cannot be completely replaced by new energy sources, such as wind and solar energy. However, when the exploitation of conventional petroleum and gas resources reaches a bottleneck, the exploitation and effective utilization of unconventional energy such as heavy crude oil (herein referred to as ‘heavy oil’) and ultra-heavy oil, become essential [1] , [2] , [3] . Even though the resource of heavy oil is rich, its characteristics of high viscosity, high density, and high impurity atom content make exploitation and transport difficult [4] , [5] .…”
Section: Introductionmentioning
confidence: 99%