Investigation Report
Ejected Wireline Tool String Struck Worker During Well Abandonment
09-28-2011 08:15 00064 SS/114 LTA (>3 days) - Other
- BSEE
- Investigation Report
- Unknown
- Line of firePressure systems
- Well abandonment
- Hand toolsValveWellhead
- Energy and process isolationJob safety analysisManagement of changeStop-work authority
- Upstream oil and gas
- Offshore installation
Summary
Investigation of an injury during well abandonment when a wireline tool string and night cap were ejected approximately 100 feet into the air. The tool string struck a worker. Findings identify unrecognised trapped pressure and deficiencies in management of change, stop-work intervention and job safety analysis.
Classifications: Line of fire; struck-by hazards.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Well abandonment; plug and abandonment; P&A.
Classifications: Hand tools; hand-held tools; handheld tools.
Classifications: Valve; valves.
Classifications: Wellhead; well head.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Management of change; MOC; change management.
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.