Explosive welding combines with bottom-tow for new subsea pipeline construction technique

Conference · Mon Jan 01 04:00:00 EST 1979 · 11th Offshore Technology Annual Conference Proceedings; (United States)

OSTI ID:5560005

Redshaw, P R; Stalker, A W

The bottom-tow technique for installing pipe strings on the seabed and the explosive welding tie-in method complement each other to provide a technically and economically attractive pipeline construction method applicable over a wide range of water depths and weather conditions, including marginal cases where other pipelaying methods would not normally be justified. By using the bottom-tow method, pipe strings up to 20 km long can be transported at an optimum towing speed of about 5 knots and positioned within 1.8 m of the specified tow route. Both techniques can be operated from a single, nonspecialized surface vessel in a variety of projects. By using the bottom-tow/explosive welding method, savings of at least 50% can be achieved, compared with conventional lay-barge techniques, particularly for 10 mi or longer pipelines.

• OSTI ID: 5560005
• Report Number(s): CONF-790444-
• Conference Information: Journal Name: 11th Offshore Technology Annual Conference Proceedings; (United States) Journal Volume: 2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420205* -- Engineering-- Transport & Storage Facilities-- (1980-)
COMPARATIVE EVALUATIONS
COST
DEPTH
DIMENSIONS
EXCAVATION
EXPLOSION WELDING
FABRICATION
HYDROGEN COMPOUNDS
INSTALLATION
JOINING
OXYGEN COMPOUNDS
PIPELINES
SEA BED
SEAWATER
SHIPS
TECHNOLOGY UTILIZATION
UNDERWATER OPERATIONS
WATER
WEATHER
WELDING