TLP production risers for 1200-m water depth

Journal Article · Tue Nov 01 04:00:00 EST 1988 · SPE (Society of Petroleum Engineers) Product. Eng.; (United States)

DOI:https://doi.org/10.2118/15882-PA· OSTI ID:6504415

Delgado, J H; Erb, P R ^[1]; Moe, G ^[2]

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1. Conoco Inc. (US)
2. Norwegian Inst of Technology (NO)

A number of technically feasible alternative riser systems exist for tension leg platform (TLP) production systems in deep water. These include conventional steel, steel with added buoyancy, titanium, and carbon-fiber composite. The last three of these options provide substantial reductions in required riser tension for a 1200-m (3,935-ft) depth. For a minimum-size TLP, these reduced tensions translate into substantial reductions in fabricated steel weight. Replacing conventional top tensioners with a hard-mount or gimbal arrangement requires a relatively small increase in top tension, which would be balanced out by weight savings on the tensioning equipment. Operational concerns related to pressure and temperature changes must be addressed to ensure feasibility of the hard-mount or gimbal approach.

• OSTI ID: 6504415
• Journal Information: SPE (Society of Petroleum Engineers) Product. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Product. Eng.; (United States) Vol. 3:4; ISSN SPENE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALLOYS
CARBON STEELS
DEPTH
DIMENSIONS
DRILLING
ELEMENTS
FEASIBILITY STUDIES
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MARINE RISERS
MATERIALS TESTING
METALS
OFFSHORE DRILLING
OFFSHORE PLATFORMS
OXYGEN COMPOUNDS
PIPES
STEELS
TEMPERATURE EFFECTS
TESTING
TITANIUM
TRANSITION ELEMENTS
WATER