One-piece tie-in procedure saves 20 days at Ekofisk

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Ocean Ind.; (United States)

OSTI ID:6496063

McDermott International, Inc., working with Solus Ocean Systems Inc. (SOS), has developed and successfully employed a method of accelerating hyperbaric tie-ins between deepwater platforms and subsea pipe lines. In two pipe line tie-ins at Amoco of Norway's Ekofisk riser platform, McDermott reduced the number of hyperbaric welds required per tie-in from four to two by installing the riser and the expansion loop as a single unit. The risers were tied into existing 20-in. gas and oil lines near the platform base. McDermott engineers estimate that single-piece installation saved 20 days of construction time over conventional tie-in practices.

• OSTI ID: 6496063
• Journal Information: Ocean Ind.; (United States), Journal Name: Ocean Ind.; (United States) Vol. 17:4; ISSN OCIDA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
032000 -- Natural Gas-- Transport
Handling
& Storage
ENERGY SOURCES
FABRICATION
FOSSIL FUELS
FUELS
JOINING
OFFSHORE PLATFORMS
PETROLEUM
PIPELINES
UNDERWATER FACILITIES
WELDING