Investigation Report
Work Platform Caught Hydraulic Umbilical During Riser Removal
06-24-2013 00:15 G14205 EB 602 Other / Equipment Damage > $25K
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failure
- Lifting operationsWell abandonment
- Operating and work proceduresPositive retention and reliable securingRisk assessment
- Upstream oil and gas
Summary
An investigation examines equipment damage during riser removal for plug and abandonment. Reduced buoyancy support preceded falling studs and a work platform catching an adjacent well’s hydraulic umbilical, interrupting production. Findings identify torque-related hazard-analysis omissions, inadequate lifting arrangements, procedural gaps and inaccessible studs after installation.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Well abandonment; plug and abandonment; P&A.
Classifications: Operating and work procedures.
Classifications: Positive retention and reliable securing.
Classifications: Risk assessment; hazard assessment.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.