FIELD: oil-and-gas industry.
SUBSTANCE: proposed device consists of power supply, electric heaters arranged ion the well and three identical pressure pipes, each consisting of two parts. Lower part is located in the well bottom area and made of high specific resistance alloy Upper part is made of metal or alloy with low specific resistance. Every said pipe nearby well mouth is equipped with bushing and terminal assy whereto connected is the three-phase power supply phase. Outer surface of every pipe is electrically insulated. Three pipes in the well mouth zone are integrated by manifold equipped with outlet pipe tightly penetrating via lock into well bottom. Every pipe nearby well mouth is provided with bushing and terminal assy. Said pipes are connected via terminal assemblies with DC source.
EFFECT: simplified design and hardware of oil well pressure pipe, higher reliability and lower costs.
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