SUBMERGED WELLHEAD VALVE Russian patent published in 2014 - IPC E21B36/00 E21B33/35 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to submerged wellhead valves passing flow of hydrocarbons from an oil and/or gas well. The submerged wellhead valve has an inner channel for passing extracted hydrocarbons, an inlet port and an outlet port. The inlet and outlet ports are placed at the ends of the inlet and outlet channels respectively and intended for connection to the cooling fluid. At that the above inlet and outlet channels come to the above device to the area suitable for cooling of components heated by warm flow of hydrocarbons.

EFFECT: levelling down requirements to submerged wellhead equipment in regard to mechanical stability in combination with high temperatures resistance, thus excluding use of expensive components.

2 cl, 1 dwg