In this invention a method is described for launching a steel catenary riser (SCR) from the seabed to the surface. Basically the method comprises three stages. During the first stage, joints are continually welded to the metal pipe resting on the seabed to form the length of the steel catenary riser (SCR) in contact with the seabed. In the second stage a length of pipe previously wound onto a receiving device is welded to the free end of the last joint welded and then it is unwound and launched to form the intermediate length of the steel catenary riser (SCR). In the third stage joints are again welded to the intermediate length of the steel catenary riser (SCR) to form the top length of the said steel catenary riser (SCR).
申请公布号
WO0118349(A1)
申请公布日期
2001.03.15
申请号
WO2000BR00096
申请日期
2000.08.25
申请人
PETROLEO BRASILEIRO S.A. - PETROBRAS
发明人
FALCAO CRITSINELIS, ANTONIO, CARLOS;CORREA DA SILVA, RENATO, MARQUES;BRAGA, VINICIUS, RODRIGUES