Investigation Report
Subsea Oil Leak from Riser Touchdown Connector
06-08-2022 1310 G09868 MC 778 A Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionHydrocarbon releaseMechanical failure
- Inspection and maintenance
- Process pipework and pipelines
- Energy and process isolationPreventive maintenance
- Upstream oil and gas
- Subsea
Summary
BSEE investigates a subsea oil leak from Thunder Horse’s P2 riser touchdown connector, with pollution estimated at 12.8–128.1 gallons. The report examines connector failure, ROV observations and limitations of pressure-trend leak detection, alongside well shut-in, gasket resealing, pressure testing and interim flowline maintenance pending replacement.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Process pipework and pipelines; process piping.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Subsea; underwater worksite.