Investigation Report
Drillship Excursion During Drilling Prompts Emergency Disconnection and Mud Release
03-05-2024 0415 G26252 MC 391 Pollution, Incident > 25K, Other
- BSEE
- Investigation Report
- Unknown
- Dropped objectsEnvironmental protectionHydrocarbon releaseLoss of station keeping
- DrillingDynamic positioning
- Emergency responseExclusion zonesPollution reporting
- Upstream oil and gas
- Vessel
Summary
BSEE investigates a weather-driven excursion of the Deepwater Poseidon drillship during drilling in Mississippi Canyon Block 391. The report describes emergency disconnection, synthetic-based mud release and ROV verification of well security. It also documents a falling drill-pipe and bearing assembly, recovery operations and failures to disclose the resulting damage.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Drilling; well drilling.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Emergency response; emergency preparedness.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Pollution reporting.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.