FIELD: oil and gas industry.
SUBSTANCE: riser includes many sections forming a continuous chain. Each riser section includes a pipe having the first end and the second end, the first flange mechanically connected to the first pipe end, the second flange mechanically connected to the second pipe end. Pipe, as well as flanges are made from aluminium alloy. Pipe is made from the first metallic material, and the first and the second flanges are made from the second metallic material and suitable for connection of multiple riser sections to a continuous chain. The first and the second mechanical connections are not welded and sufficiently fixed by means of thread chosen of the group consisting of taper thread, trapezoidal thread or thread with breaks to provide the maintenance of dynamic loads by multiple riser sections, which are applied with water weight, in which riser sections are suspended.
EFFECT: improving device connection reliability.
21 cl, 16 dwg
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