Investigation Report
Kill-Line Gooseneck Disconnection Released Mud During BOP Flushing Preparations
03-12-2010 13:30 G26265 MC/540 Pollution - Other
- BSEE
- Investigation Report
- Unknown
- Environmental protectionLoss of containmentMechanical failure
- DrillingInspection and maintenanceROV operations
- Process pipework and pipelinesRemotely operated vehicle
- Operating and work proceduresOperational supervisionPositive retention and reliable securing
- Upstream oil and gas
- Marine waters
Summary
Investigation of a kill-line gooseneck disconnection during preparations to flush BOP lines, releasing approximately 48 barrels of synthetic-base mud into Gulf waters. ROV inspection identified the disconnection. The report attributes it to an absent retainer pin and tugger-line tension, with supervisory and make-up procedure failures contributing.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Process pipework and pipelines; process piping.
Classifications: Remotely operated vehicle; ROV; underwater robot.
Classifications: Operating and work procedures.
Classifications: Operational supervision.
Classifications: Positive retention and reliable securing.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.