Medgaz will begin offshore pipelay of the 210 km, Algerian-European natural gas pipeline bearing its name in May 2008, using a combination of S-lay and J-lay techniques. Saipem SpA's Castoro Sei semisubmersible pipelay vessel arrived in Almeria, Spain, in early March and has been welding and prefabricating joints of the 12 m, 24-inch OD pipe since. the Castoro Sei will lay the shallow-waer portion of the pipeline (down to 550 m) first from Almeria and then from Algeria, using the S-lay method, with the work expected to take 4 months. The dynamically semisubmersible SSDV Saipem 7000 will complete deepwater pipelay (down to 2,160 m) during third-quarter 2008. DLB Crawler will perform the above-water tie-in off the Algerian coast. This article describes the methods and technologies applied to each step of the Medgaz project, including Medgaz's investigation into using S-lay in large-diameter ultradeepwater applications.
Medgaz pipelay begins; S-lay, J-lay split duties
Oil and Gas Journal ; 106 , 17 ; 86-90
2008
4 Seiten, 4 Bilder, 2 Quellen
Aufsatz (Zeitschrift)
Englisch
Algerien , Spanien , Erdgasfernleitung , Pipeline , Verlegen , Tiefsee , Schweißen , Mittelmeer
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