Investigation Report
Gas Release and Surface Casing Collapse During Well Abandonment
09-09-2023 1600 G02600 SM 281 C Shutdown from gas release
- BSEE
- Investigation Report
- Unknown
- CorrosionHydrocarbon releaseWell integrity
- Lifting operationsWell abandonment
- ValveWellhead
- Evacuation, escape and rescueStop-work authority
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates a gas release during well abandonment on South Marsh Island Block 281C. Corrosion and loss of conductor casing led to surface casing collapse at Well C-11, damaging valves and decking. The report describes evacuation, well securing and subsequent abandonment, and records noncompliance with immediate incident-notification requirements.
Classifications: Corrosion; corrosion damage.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Well integrity; well life cycle integrity.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Well abandonment; plug and abandonment; P&A.
Classifications: Valve; valves.
Classifications: Wellhead; well head.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.