Investigation Report
Drill Line Falls to Rig Floor During Top-Drive Maintenance
07-20-2017 16:45 G03331 EI 251 Travel Block Incident
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failure
- DrillingInspection and maintenanceLifting operations
- WinchWire rope
- Positive retention and reliable securingPreventive maintenance
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates a travelling-block incident during top-drive maintenance at Eugene Island Block 251C. Drill line detached from the drawworks drum, with 123 feet falling to the rig floor and no injuries. Findings examine insufficient line tension and unsuitable clamp components; recommendations ask operators to consider additional wraps, component verification and clamp inspections.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Winch; winches.
Classifications: Wire rope; steel wire rope.
Classifications: Positive retention and reliable securing.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.