Method and apparatus for assembling and laying underwater pipeline

US4068490A · kind A · utility

Assignees

• Compagnie Francaise Des Petroles · FR
• Etudes Petrolieres Marines · FR
• Ateliers et Chantiers de Bretagne-ACB · FR
• Compagnie Maritime D'Expertises · FR
• Compagnie General pour les Developpements Operationnels des Richesses Sous-Marines CG Doris · FR
• Entreprise de Recherches et d'Activities Petrolieres (E.R.A.P.) · FR

Inventor

• Michel Jegousse · Nantes, FR

Key dates

• Filing date: May 5, 1976
• Grant date: Jan 17, 1978
• Expiry date: May 5, 1996

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L1/19
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In the assembling and laying of an undersea pipe in which the already submerged pipe portion is suspended from a surface support, the end of the submerged pipe portion being supported on a variable inclination laying ramp, and a new pipe section is moved into alignment with the end of the pipe portion and fixed thereto, the submerged pipe portion is so suspended from the surface support that the tension in the pipe portion is maintained substantially constant irrespective of vertical movements of the surface support caused by the action of waves on the surface support.