FLEXIBLE TUBULAR PIPE FOR TRANSPORTING CORROSIVE HYDROCARBONS

摘要

The present invention relates to a flexible pipe (1) comprising a pressure sheath (3), an intermediate sheath (4), tensile reinforcements (6, 7), and an outer sheath (8). The perviousness of the intermediate sheath to H2O is at least twice as low as that of the pressure sheath. The perviousness of the intermediate sheath to H2S is at least twice as high as that of the pressure sheath. The perviousness of the intermediate sheath to CO2 is at least twice as high as that of the pressure sheath. The perviousness of the intermediate sheath to CH4 is at least twice as high as that of the pressure sheath.