The need to develop and apply effective cleaning technologies and modern energy-saving equipment that implements them is an urgent task for many oil and gas producing and service organizations. Today, there is an increase in the role of modern techniques and software designed for the design and selection of equipment, with the ability to simulate work processes. The use of mathematical models makes it possible to develop the most optimal design without making prototypes. Numerical methods have revealed the main regularities of submerged and non-submerged jet outflows for the destruction of deposits with high adhesion from the surface of oil and gas field equipment. Numerical simulation of the flow of multiphase flows was carried out in a software package for solving problems of computational fluid dynamics by the finite element method.
The paper describes the applied hydrodynamic calculation models, the features of mesh construction, the choice of the solver parameters. A number of mathematical experiments were carried out: flow modeling, as well as comparison of flows for three types of nozzles: conical converging with a cylindrical outlet; cylindrical and conical divergent. The obtained results were verified by practical testing in field conditions. An improved high-pressure cleaning technology has been introduced at oil and gas and service enterprises of the Russian Federation and Ukraine. The results were realized in the design of various installations for hydrodynamic cavitation cleaning of the working bodies of the ESP and tubing from salt deposits with increased radioactivity; Tubing from asphalt-resins-paraffin deposits with high adhesion and strength; hydrodynamic purification units, gas treatment facilities of gas producing enterprises and underground gas storage facilities.
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