Unique Corus Tubes for Tupi Project
Claudio Paschoa
July 9, 2010
Corus Tubes manufactured the thickest UOE 18” ever made especially for deepwater pipes at the Tupi field, in the Santos Basin.Corus Tubes has successfully manufactured 118km of 457mm x 31.75mm Grade X65 sour linepipe for the Petrobras Tupi project. This linepipe is designed to operate in Brazil’s Santos Basin at a depth of 2200m, and is thickest 18” UOE pipe manufactured to date. The design criteria allowed for fatigue and corrosion concerns as well as depth/collapse issues, and this led to the demanding and previously untried thickness to diameter ratio (t/D) of 0.0695. Some innovative steps were taken by Corus Tubes to control pipe shape, a critical element for subsequent laying of the pipe and collapse performance.