Method and apparatus for production of subsea hydrocarbon formations

Patent · 17 January 1995

OSTI ID:6877777

Blandford, J W

A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external flotation tanks located below the water surface. The surface buoy is secured to the sea bed by one or more tendons which are anchored to a foundation with piles imbedded in the sea bed. The system accommodates multiple versions on the surface buoy configuration. 20 figures.

• DOE Contract Number: FG02-90ER80888
• Assignee: PTO; EDB-95-030739
• Patent Number(s): A; US 5381865
• Application Number: PPN: US 8-002473
• OSTI ID: 6877777
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
423000* -- Engineering-- Marine Engineering-- (1980-)
CONTROL
DESIGN
EQUIPMENT
HYDROGEN COMPOUNDS
LIQUID WASTES
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
OXYGEN COMPOUNDS
PROCESS CONTROL
SEPARATION EQUIPMENT
TRANSPORT
WASTE WATER
WASTES
WATER
WELLS