Deep water riser system for offshore drilling

Patent · Tue May 15 00:00:00 EDT 1984

OSTI ID:6452207

Potts, H L

A buoyant riser system for use in a deep water offshore drilling environment is anchored by a system of compliant guys below the active weather zone of the sea. A controllably buoyant housing of the system is submerged at a depth that is readily accessible to divers and includes a blow-out preventer (BOP) from which a suspended sub-riser leads to a well bore to which the sub-riser is coupled. Above the housing, a riser suspended from a floating drill rig is coupled to the BOP thereby communicating the drill rig directly with the well bore for drilling and well completion operations.

• Assignee: EDB-85-005857
• Patent Number(s): US 4448266
• OSTI ID: 6452207
• Resource Relation: Patent Priority Date: Priority date 14 Nov 1980, Canada; Other Information: PAT-APPL-206948
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
MARINE RISERS
DESIGN
OFFSHORE DRILLING
ANCHORS
BLOWOUT PREVENTERS
BUOYS
DEPTH
DRILLING RIGS
MOORINGS
WELL COMPLETION
DIMENSIONS
DRILLING
PIPES
423000* - Engineering- Marine Engineering- (1980-)