Investigation Report
Emergency Disconnect During Completion Operations Releases Zinc Bromide
01-15-2022 16:10 G35864 GC 389 Pollution, Other: EDS-Spill
- BSEE
- Investigation Report
- Unknown
- Environmental protectionLoss of containmentLoss of station keeping
- Dynamic positioningPressure testing
- Blowout preventer
- Functional testingOperating and work proceduresWell-barrier testing
- Upstream oil and gas
- Marine watersVessel
Summary
BSEE investigates a weather-related emergency disconnect during completion operations aboard Noble Stanley Lafosse in the Gulf of Mexico. A misaligned thruster compromised station keeping, while the well suspension procedure remained incomplete. Zinc bromide discharge was revised to approximately 420 barrels. The report examines failed barrier tests and subsequent thruster correction.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Functional testing; function test.
Classifications: Operating and work procedures.
Classifications: Well-barrier testing; well barrier verification.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Vessel; aboard ship; onboard vessel.