Investigation Report
Drilling Riser Failure on Discoverer Enterprise
05-21-2003 04:00 G14658 MC/822 Pollution
- BSEE
- Investigation Report
- Unknown
- CorrosionEnvironmental protectionLoss of containmentMechanical failure
- DrillingInspection and maintenanceROV operations
- Blowout preventer
- Non-destructive testingOperating and work proceduresPreventive maintenance
- Upstream oil and gas
- Marine watersSubsea
Summary
Investigation of a drilling riser failure on Discoverer Enterprise examines connector insert cracking, hydrogen embrittlement and progressive connection failure. It documents wellbore sealing, subsea recovery and potential synthetic-mud discharge. Recommendations address insert and bolt redesign, hardness limits, coating removal and more frequent magnetic particle inspection.
Classifications: Corrosion; corrosion damage.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Non-destructive testing; NDT; non-destructive examination; NDE.
Classifications: Operating and work procedures.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Subsea; underwater worksite.