Jolliet project proves flexible pipe for deepwater development

Journal Article · Mon Nov 11 04:00:00 EST 1991 · Oil and Gas Journal; (United States)

OSTI ID:5603379

Tillinghast, W S ^[1]; Lecomte, H; Sturdevant, L A; Cranham, P ^[2]

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1. Conoco Inc., Houston, TX (US)
2. Coflexip and Services Inc., Houston, TX (US)

This paper reports on the flexible-pipe export system for Conoco Inc.'s Jolliet project in the Gulf of Mexico which is the deepest flexible pipe and riser ever installed. The project saw, as well, the first use of flexible pipe risers with a tension-leg well platform (TLWP) or a tension-leg platform (TLP). Also, during the installation, large-diameter flexible pipe was abandoned in deepwater under threat of an approaching hurricane. The pipe was later retrieved and installation completed. The deepwater pipeline system on Conoco's Jolliet field in the Gulf of Mexico consists of one process-gas line and one oil-water emulsion line. Flexible pipe was used for a large portion of both lines. The flexible pipe was installed from the TLWP to approximately 6 miles away where subsea connections were made to conventional rigid steel pipelines. These flexible pipes were installed in water depths ranging from 930 to 1760 ft in rough sea bed conditions. Flexible pipe risers were suspended from the TLWP in a simple quaternary configuration.

• OSTI ID: 5603379
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 89:45; ISSN OIGJA; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
ATLANTIC OCEAN
CARIBBEAN SEA
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GULF OF MEXICO
MARINE RISERS
NATURAL GAS
PETROLEUM
PIPELINES
PIPES
SEAS
SURFACE WATERS