초록 ▼

The present invention relates to a flexible tubular pipe for carrying fluids under pressure containing H2S and to a method for designing such a flexible pipe. The pipe includes a body (7), an internal sealing sheath (8), at least one steel armouring layer (9,10) withstanding the stresses induced by

The present invention relates to a flexible tubular pipe for carrying fluids under pressure containing H2S and to a method for designing such a flexible pipe. The pipe includes a body (7), an internal sealing sheath (8), at least one steel armouring layer (9,10) withstanding the stresses induced by the inside/outside pressure difference, and at least one traction-resisting steel armouring layer (11, 12) spirally wound at an angle less than 45.degree. in relation to the axis of the pipe. In this pipe, at least the armouring layer withstanding the stresses induced by the inside/outside pressure difference is made of a determined steel meeting H2S resistance criteria, and at least the traction-resisting armouring layer is made from steel wires that do not meet H2S resistance criteria.

대표청구항 ▼

1. A flexible tubular pipe intended to carry fluids under pressure containing H2S, said pipe comprising a body, an internal sealing sheath, at least one steel armouring layer withstanding stresses induced by the inside/outside pressure difference, at least one tension-resisting steel armouring layer

1. A flexible tubular pipe intended to carry fluids under pressure containing H2S, said pipe comprising a body, an internal sealing sheath, at least one steel armouring layer withstanding stresses induced by the inside/outside pressure difference, at least one tension-resisting steel armouring layer spirally wound at an angle less than 45.degree. in relation to the axis of the pipe, characterized in that at least said armouring layer withstanding stresses induced by the inside/outside pressure difference is made of a determined steel meeting H2S resistance criteria, and in that at least said tension-resisting armouring layer is made from steel wires that do not meet H2S resistance criteria.