Investigation Report
BOP Stack Disconnected and Fell During Marine Riser Running
06-14-2008 21:22 G19409 AC/815 Incident >$25K - Dropped BOP
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failure
- Drilling
- Blowout preventerValve
- Positive retention and reliable securing
- Upstream oil and gas
- Offshore installationSubsea
Summary
Investigation of a BOP stack disconnecting during marine riser running on the Noble Clyde Boudreaux and falling approximately 1,400 feet to the seabed. The report identifies probable locking-circuit and wiring faults, discusses possible valve leakage and connector contamination, and records redundant locking measures and connector replacement.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Valve; valves.
Classifications: Positive retention and reliable securing.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Classifications: Subsea; underwater worksite.