Investigation Report
Statoil - Visund - Investigation of well-control incident
Statoil - Visund - Investigation of well-control incident
- Havtil
- Investigation Report
- Unknown
- Barrier managementMechanical failureWell controlWell integrity
- DrillingPressure testing
- Blowout preventerValve
- Competence and trainingPreventive maintenanceRisk assessmentWell-barrier testing
- Upstream oil and gas
- Offshore installation
Summary
Investigation of a well kick during washing at Visund A examines liner-barrier verification, BOP configuration and jammed kelly cock valves that obstructed conventional well killing. Control was restored after the valves opened. Findings address maintenance, risk assessment and exercises; direct and underlying causes remained uncertain.
Classifications: Barrier management; safety barrier management.
Classifications: Mechanical failure; equipment failure.
Classifications: Well control; kick control; loss of well control.
Classifications: Well integrity; well life cycle integrity.
Classifications: Drilling; well drilling.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Valve; valves.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Risk assessment; hazard assessment.
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.