Flexible pipe with high axial compression strength and method for making same
AssigneesCoflexip, Institut Francais du Petrole
InventorsDaniel Averbuch, Jean-Marc Leroy, Alain Coutarel
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Abstract
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.
Claims19
A method of manufacturing a flexible pipe comprising at least one tensile armouring layer including elongate reinforcing elements arranged helically around the axis of the pipe, the elongate elements having a width L and forming an angle α in relation to the axis of the pipe, wherein the play separating two contiguous elements, measured on said circumference, is less than
- 1.5
- ·
- L
- cos
-
-
- α
- .
A flexible pipe comprising a tensile armouring layer including elongate reinforcing elements arranged helically around the axis of the pipe, the elongate elements having a width L and forming an angle α in relation to the axis of the pipe, wherein the play separating two contiguous elements measured on said circumference is less than
- 1.5
- ·
- L
- cos
-
-
- α
- .
Dependencies are inferred from the claim text.