Известия Томского политехнического университета: Инжиниринг георесурсов (Jun 2022)
DEVELOPMENT OF ELECTROMAGNETIC DEHYDRATOR FOR FIELD OIL TREATMENT
Abstract
The relevance. The produced oil of most of the fields in our country has a significant water cut. The water content in oil reaches 98–99 %. Pumping oil with water through field pipelines is very uneconomical. Therefore, the oil industry is in need of water separation units (dehydrators). There are several methods of dehydration: chemical, mechanical, thermal and electrical methods. All these methods have their advantages and disadvantages. The article proposes an electromagnetic dehydrator, which uses the combined effect of electric and magnetic fields. The authors proposed an original design of a magnetoelectrodehydrator. Magnetoelectric dehydrator is designed for operation in the oil industry for dehydration and desalting of oil. The electric field is created by a system of electrodes. A pulsating magnetic field is created by a single-phase winding. Under the influence of an electric field, charged water particles begin to move towards an oppositely charged electrode. Oppositely charged drops move towards each other. The winding creates a pulsating magnetic field. The latter induces eddy currents in the water droplets. Droplet size increases. Droplets settle faster under the action of gravity, which allows you to increase the performance of the dehydrator. The main aims of the research are to develop the design of a magnetoelectrodehydrator; to conduct a study of its characteristics; to build a mathematical model of water and oil separation and obtain dependency graphs; to formulate requirements for power sources for electromagnetic dehydrators. Objects: oil treatment plants, dehydrators for the separation of water-oil emulsions, plants with electromagnetic influence. Methods: electric field theory, magnetic field theory, mathematical modeling, program for mathematical and engineering calculations Mathcad. Results. The article proposes the design of a magnetoelectrodehydrator. A mathematical model of water and oil separation is proposed. Graphs of dependences of magnetic induction on the frequency and performance of the dehydrator are obtained. The dependence of the time between droplet collisions on the frequency of the magnetic field is plotted. The article formulates the requirements for a power source for an electromagnetic dehydrator.
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