Institut Francais Du Pe'trole

Other

Coflexip

Jean-Marc Leroy

Daniel Averbuch

Alain Coutarel

Patrice Joel Jung

Xavier Longaygue

Jos&eacute; Mallen Herrero

Romain Lepoutre

The present invention relates to a flexible pipe structure wherein transverse displacement caused by buckling of the elongate elements of a tensile armouring layer when the pipe is being laid or used in deep sea is limited. The invention aims to reduce the play between the elongate elements of the tensile armouring layer so as to limit transverse displacement possibilities while providing the pipe with the required flexibility and mechanical characteristics. The elongate elements can freely move longitudinally in relation to one another to ensure flexibility of the pipe.

Flexible pipe with high axial compression strength and method for making same

The present invention relates to a method for determining a flexible pipe meeting specifications and consisting of at least one of the following elements: a body ( ), a sealed sheath ( ), a pressure layer ( ), a hoop ( ), an armoring layer ( ), an insulating material layer.

Method for determining a flexible pipe structure

The present invention relates to a flexible tubular pipe for carrying fluids under pressure containing H S and to a method for designing such a flexible pipe. The pipe includes a body ( ), an internal sealing sheath ( ), at least one steel armouring layer ( ) withstanding the stresses induced by the inside/outside pressure difference, and at least one traction-resisting steel armouring layer ( ) spirally wound at an angle less than 45&deg; 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 H S resistance criteria, and at least the traction-resisting armouring layer is made from steel wires that do not meet H S resistance criteria.

Flexible pipe for static use in a corrosive ambience

Growing community of inventors

Rueil Malmaison, France

Jean-Marc Leroy