Investigation Report
Oil Release from Shut-In Subsea Well
05-08-2022 11:30 G-31534 MC 940 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionHydrocarbon releaseMechanical failureWell integrity
- ROV operationsWell intervention
- Process pipework and pipelinesRemotely operated vehicleValve
- Emergency responseEnvironmental monitoring and quality assuranceEnergy and process isolationPollution reporting
- Upstream oil and gas
- Marine watersSubsea
Summary
BSEE investigates an oil release from Shell’s shut-in subsea VA007 well at Mississippi Canyon 940. ROV diagnostics and valve closures stopped the leak; subsequent e-line work identified parted production tubing at a coupling. The spill was estimated at seven barrels over several days. The reason for tubing failure remained unknown.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Well integrity; well life cycle integrity.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Well intervention; workover; well servicing.
Classifications: Process pipework and pipelines; process piping.
Classifications: Remotely operated vehicle; ROV; underwater robot.
Classifications: Valve; valves.
Classifications: Emergency response; emergency preparedness.
Classifications: Environmental monitoring and quality assurance.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Pollution reporting.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Subsea; underwater worksite.