Site investigation for Magnus

Conference · Sun May 01 04:00:00 EDT 1983 · Offshore Technol. Conf.; (United States)

OSTI ID:5482560

Semple, R M; Rigden, W J

In April 1982, BP's Magnus structure was installed about 150 km northeast of the Shetland Islands. The most northerly, deepest water platform in the North Sea, the steel tower is supported on groups of 2 m diameter piles that were driven, in good accordance with predictions, to an average penetration of 85 m in strong cohesive soils. The paper describes investigations performed at the platform site, and documents soil characteristics for conventional and state of the art pile analyses. Reference is made to several innovative techniques first used at the Magnus site that have since been incorporated into the larger North Sea investigations. Information is given about the geological history of the site. Test results are presented on soil strength and stiffness, including critical state soil mechanics parameters, on residual pore pressures after sampling, and on the effect of sample size on strength characteristics.

• Research Organization: McClelland Engineers
• OSTI ID: 5482560
• Report Number(s): CONF-830514-
• Conference Information: Journal Name: Offshore Technol. Conf.; (United States) Journal Volume: 1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
ATLANTIC OCEAN
FOUNDATIONS
GEOLOGIC HISTORY
MECHANICAL STRUCTURES
MECHANICS
NORTH SEA
OFFSHORE PLATFORMS
OFFSHORE SITES
SAMPLING
SEAS
SITE SURVEYS
SOIL MECHANICS
SUPPORTS
SURFACE WATERS