Key words: electrochemical protection, electrically insulating connections, operating reliability, mechanical strength in the axial direction, allowable values of radial plastic deformation, oilfield pipelines and equipment.
This article discusses commercial applications of electrically insulated connections for electrochemical protection of oilfield equipment used in OAO TATNEFT. A procedure is proposed for calculating the mechanical strength in the axial direction for electrically insulated connections obtained through radial plastic deformation of their structural components. Technological solutions are presented to increase axial mechanical strength while maintaining allowable radial deformation extent specified in the design of electrically insulated pipeline connections. Case histories of the technology applications on oilfield pipelines of OAO TATNEFT are provided.
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