Abstract
The present study would have been impossible without support from Poltava National Technical Yuri Kondratyuk University administration. We express our sincere gratitude to Rector Volodymyr Onyshchenko for the opportunity to conduct tests in modern Laboratory of Oil and Gas Technologies.
Highlights
The formation of asphaltene, resin, and wax deposits (ARWD) in producing wells is prone to emergency situations, mainly because of sucker rod and polished rod breakage, which repeatedly reduces their overhaul period (OP) and production volumes.Extraction of liquid hydrocarbons is often complicated by the presence of asphaltene or resin and wax deposits in them, which causes formation of deposits inside the tubing string (Chow et al, 2000; GaurinaMeđimurec & Novak Mavar, 2017)
As the heat-holding ability is high and the thickness of the layer is minimum, it is proposed to use as a material for insulating casing for the developed multi-level complex of ARWD prevention, made on the basis of thermal-magnetic dewaxing devices, a heat-reflective insulating material made on the basis of a glass pane covered with aluminum foil – Armofol®
The production and industrial use of a multilevel magnetothermal dewaxing complex based on magnetothermal dewaxing devices provides an opportunity to improve the effectiveness of APWD preventing during the extraction of hydrocarbons and their transportation by pipelines
Summary
Experiments proved that the use of a magnetothermal dewaxing device enables (during round-the-clock operation of the well) to double the time between overhauls of the oil wells equipped with sucker-rod pumping units. The paper provides an analytical model for calculating the power consumption parameters of the developed multi-level magnetothermal dewaxing complex and the level of the magnetic moment of the formation fluid flow elements in the tubing string pulling unit equipped with this complex. The design of the magnetothermal dewaxing device, as the main constructive link of the multi-level complex of magnetothermal dewaxing, and the material for the manufacture of external insulating casings of such complex elements are described. The design of a multilevel complex of magnetothermal dewaxing and its elements integrated into the tubing string pulling unit and equipped with external insulating casings, is presented. The analytical model for calculating operational parameters of multilevel dewaxing complex equipped with insulating casings is substantiated. The developed designs of magnetothermal dewaxing devices will allow to use them together with the operation of deep-pumping equipment and in the case of a flowing oil well.
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