Investigation Report
Wellhead Gas Leaks During Production Restoration After Hurricane
10-31-2008 14:30 G01146 VR/245 Surface Equipment Failure or Procedures
- BSEE
- Investigation Report
- Unknown
- Hydrocarbon releaseMechanical failureWell controlWell integrity
- Inspection and maintenancePressure testing
- ValveWellhead
- Energy and process isolationWell-barrier testing
- Upstream oil and gas
- Offshore installation
Summary
Investigation of wellhead gas leaks during restoration of platform production after Hurricane Ike. Stretched flange studs compromised seals, while Well G-4’s SCSSV initially failed to seal. The report describes flaring, component replacement and testing, and recommends post-event inspections, isolation and wellhead pressure tests before reopening SCSSVs.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Well control; kick control; loss of well control.
Classifications: Well integrity; well life cycle integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Valve; valves.
Classifications: Wellhead; well head.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Well-barrier testing; well barrier verification.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.