PETROLEUM FLUID-CONVEYING FLEXIBLE PIPE COMPRISING A BARRIER AGAINST DIFFUSION

• Main Authors: TARAVEL-CONDAT, Carol, LEFEBVRE, Xavier, DEMANZE, Frederic, MARTINEZ, Michael, KLOPFFER, Marie-Helene, PLENNEVAUX, Cecile, ROUSSEAU, Jean-Jacques
• Format: Patent
• Language: English
• Published: 31.07.2023
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to a pipe for transporting a petroleum effluent comprising water and at least one acid compound from carbon dioxide CO? and hydrogen sulfide H?S, the pipe comprising at least one mechanical reinforcing metal element (3, 5) and a tubular polymer pressure sheath (2), said metal element (3, 5) being positioned on the outside of said pressure sheath (2), a diffusion barrier (B) being positioned between said pressure sheath (2) and said mechanical reinforcing metal element (3, 5). According to the invention, said barrier (B) comprises at least one metal band (F) wound around the sheath (2) so as to provide a metal overlapping of between 35% and 75% and a polymer material (P) inserted into this overlapping. (Figure 2a)