Investigation Report
Gas Release Following Sand Damage to Well Equipment
10-06-2010 13:00 G02391 HI A 571 Damage >25K
- BSEE
- Investigation Report
- Unknown
- Functional safetyHydrocarbon releaseMechanical failure
- Inspection and maintenance
- Gas detectorProcess pipework and pipelinesValve
- Pressure relief
- Upstream oil and gas
Summary
Investigation of sand damage and a subsequent gas release from well A-15 at HI-A571. Sand damaged the choke and pressure-relief discharge piping, blocked pressure-sensing lines and impeded safety-valve closure. Manual wing-valve closure stopped the leak. Investigators also found a gas-detection shutdown relay bypassed and identified inadequate monitoring for continued sand production.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Pressure relief; overpressure protection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.