Investigation Report
Synthetic-Based Mud Discharges During Drilling
08-08-2015 15:55 G31938 WR 51 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionFunctional safetyHuman factorsLoss of containment
- Drilling
- Alarm management
- Upstream oil and gas
- Marine watersOffshore installation
Summary
Investigates two synthetic-based mud discharges from Diamond Ocean Blackhawk during drilling in Walker Ridge 51. Software altered slip-joint packer alarm limits without crew awareness, while pressure monitoring was inadequate. Interim measures kept both packers energised and required hourly pressure checks and manual limit adjustments pending manufacturer updates.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Human factors; human performance; ergonomics.
Classifications: Loss of containment; containment loss.
Classifications: Drilling; well drilling.
Classifications: Alarm management.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Offshore installation; offshore platform; offshore rig.