Patent ID: 8528647
Filing Date: 2013-09-10
Classification: E21B

Abstract:
1. A riser section comprising a main tube, at least one auxiliary line element arranged substantially parallel to the main tube, the ends of the main tube comprising connection means allowing longitudinal stresses to be transmitted, the ends of the at least one auxiliary line element comprising linking means allowing longitudinal stresses to be transmitted, characterized in that the linking means comprise at least one pin and at least one bore, the at least one pin being formed on a first end of the riser section and the at least one pin being configured to cooperate with at least one other bore on an end of an adjacent riser section to form a first assembly, the at least one bore being formed on a second end of the riser section and the at least one bore being configured to cooperate with at least one other pin on an end of another adjacent riser section to form a second assembly, and in that the axis of the at least one pin is parallel to the axis of the at least one auxiliary line element and non-merging, and wherein the pins are provided with teeth and hollows that cooperate with teeth and hollows of the bores.