ONE-PIECE JOINT FOR INSULATED CONDUCTORS Russian patent published in 2017 - IPC E21B43/16 E21B43/24 

FIELD: mining.

SUBSTANCE: invention relates to production of hydrocarbons, more specifically, to connecting elements, intended for insulated cables and/or input cables connection, used for formations heating. Method includes connection of heating section core with insulated conductor core in covering rock. Diameter of heating section core is less, than diameter of section core in covering rock. First insulating layer is placed on heating section core so, that at least part of heating section core end section remains open. Second insulation layer is placed on section core in covering rock so, that second insulation layer passes along heating section core open section. Second insulating layer thickness is less than thickness of first insulating layer, and section in covering rock outer diameter is substantially equal to heating section outer diameter.

EFFECT: technical result consists in improvement in insulated conductors joints reliability during manufacturing, assembling and/or their installation.

30 cl, 7 dwg