Spar buoy construction having production and oil storage facilities and method of operation

Patent · Tue Aug 19 00:00:00 EDT 1986

OSTI ID:5247832

Daniell, A F

This patent describes a floating structure including oil storage capacity and production facilities and adapted to be anchored by catenary mooring lines at a subsea well location, the combination of: a vertical elongated hull means having means to maintain the hull means in vertical position; the hull means including a vertical oil storage chamber means for storing oil and extending for a major portion of the height of the floating structure; vertical variable ballast chamber means extending from the bottom of the storage chamber means to above the top of the oil storage chamber means and selectively filled with ballast to maintain the center of gravity of the structure a selected distance from the center of buoyancy of the structure; work chamber means in the hull means above the oil storage chamber means; means in the work chamber means and in the variable ballast chamber means for controlling the amount of ballast in the variable ballast means; means in the oil storage chamber means and in the work chamber means for feeding oil to the oil storage chamber means and for removing water therefrom as oil is introduced therein; a central longitudinal passageway through the hull means; a riser means extending into the passageway from the subsea well location and terminating at the work chamber means; means on the riser buoyant tank means and on the hull means in the central passageway for guiding relative movement between the hull means and the riser means.

• Assignee: Fluor Corp., Irvine, CA
• Patent Number(s): US 4606673
• OSTI ID: 5247832
• Resource Relation: Patent File Date: Filed date 11 Dec 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
42 ENGINEERING
OFFSHORE PLATFORMS
DESIGN
MOORINGS
STORAGE FACILITIES
PETROLEUM
STORAGE
BUOYS
MARINE RISERS
NATURAL GAS WELLS
OIL WELLS
POSITIONING
PRODUCTION
SHIPS
WATER REMOVAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
PIPES
REMOVAL
WELLS
020300* - Petroleum- Drilling & Production
024000 - Petroleum- Storage- (-1989)
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
423000 - Engineering- Marine Engineering- (1980-)