Investigation Report
Hydrocarbon Release During Well Abandonment Triggered Crew Muster
11-15-2024 0837 G17407 GB 668 Required Muster
- BSEE
- Investigation Report
- Unknown
- Hydrocarbon releaseWell control
- Well abandonment
- Emergency responseSafety communication
- Upstream oil and gas
- Vessel
Summary
Investigation of a hydrocarbon release during well abandonment aboard Valaris DS-16 in Garden Banks 668. Following nitrogen displacement to dissipate a hydrate plug, brine circulation triggered a shaker-house alarm and crew muster. Findings identify inadequate control of returns through the mud gas separator; corrective action focused on crew safety meetings.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Well control; kick control; loss of well control.
Classifications: Well abandonment; plug and abandonment; P&A.
Classifications: Emergency response; emergency preparedness.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.