Earthquake-resistant jacket installed off California
In June 1984, Shell's Eureka platform jacket was loaded out aboard Heerema's 600 x 150-ft H-109 barge and began a 2-wk tow-out and installation phase in 700-ft water in the southern portion of the Beta field, approx. 9 miles off Huntington Beach, Calif. The jacket has 2 distinctions: it is the largest single-piece jacket yet constructed in California, and it is the first built in California with pre-installed curved conductors designed to precisely control angle and direction of wells to be drilled into the reservoir. The jacket is designed to withstand a 100-yr storm and meets API second-level criteria for earthquake survival for the category 2 earthquakes that can be expected in the Beta field. The 720 x 280 x 180-ft, 21,000-ton jacket's largest tubulars are 6 ft in diameter and have a 3.75-in. wall thickness. The structure is pinned to the seabed by twenty-four 5-ft-diameter piles driven 200 to 300 ft into the seabed through skirt pile sleeves.
- OSTI ID:
- 6066896
- Journal Information:
- Ocean Ind.; (United States), Journal Name: Ocean Ind.; (United States) Vol. 19:7; ISSN OCIDA
- Country of Publication:
- United States
- Language:
- English
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020300* -- Petroleum-- Drilling & Production
CALIFORNIA
DESIGN
DIRECTIONAL DRILLING
DISASTERS
DRILLING
EARTHQUAKES
ENGINEERING
FEDERAL REGION IX
INSTALLATION
NORTH AMERICA
OFFSHORE DRILLING
OFFSHORE PLATFORMS
SAFETY ENGINEERING
SEISMIC EVENTS
SIZE
SPECIFICATIONS
STORMS
USA
WELL DRILLING