Patent ID: 8474540

Claim:
A connector for assembling two riser pipe sections for offshore well drilling operations, comprising a first main tube element having as an extension a male connector element provided with a male flange pierced by at least one orifice wherein a first auxiliary tube element is secured, and a second main tube element having as an extension a female connector element provided with a female flange pierced by at least one other orifice wherein a second auxiliary tube element is secured, the male connector element fitting into the female connector element so as to connect the two main tube elements and the two auxiliary tube elements, characterized in that the connector comprises a locking collar and a locking ring, the locking collar being mounted mobile in rotation on an outer surface of the male flange, the locking collar cooperating with the outer surface of the male flange and an outer surface of the female flange for assembling the male flange and the female flange, the locking ring being mounted mobile in rotation on the male connector element, the locking ring cooperating with an inner surface of the female connector for assembling the male connector and the female connector.