Patent Number: 7,784,498

Title: Flexible pipeline with multiple pipes protected against corrosion

Abstract: A flexible pipeline with multiple pipes, adapted for hydrocarbon transport, the pipeline comprising a flexible core element inside which flows hydrocarbon, an outer sheath around the flexible core element and at least one peripheral steel alloy pipe extending longitudinally in an annular space located between the outer sheath and the flexible core element, the annular space further comprising metal elements in contact with an aqueous medium containing oxygen and the metal elements is susceptible to being oxidized by fixing oxygen. The oxidizable metal elements and is peripheral pipe are maintained mutually spaced apart to be electrically decoupled.

Inventors: Dupoiron; Francois (Barentin, FR), Jacquemin; Sebastien (La Celle Saint Cloud, FR)

Assignee: Technip France

International Classification: F16L 11/00 (20060101)

Expiration Date: 8/31/12018