Investigation Report
Synthetic-Based Mud Discharged During Transfer to Platform Rig
09-04-2018 02:17 G31418 ST 311 Pollution / Overboard Drilling Fluid
- BSEE
- Investigation Report
- Unknown
- Environmental protectionLoss of containmentMechanical failure
- DrillingFluid transferPressure testing
- HoseValve
- Functional testingJob safety analysisOperating and work procedures
- Upstream oil and gas
- Marine watersOffshore installation
Summary
BSEE investigates an accidental discharge of approximately 517 barrels of synthetic-based mud during transfer to a platform rig. A butterfly-valve gasket failed while a secondary dry-break valve was absent. The report identifies missing written requirements and inspection provisions, and records additional gate valves and planned pre-transfer low-pressure testing.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Hose; flexible hose.
Classifications: Valve; valves.
Classifications: Functional testing; function test.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Offshore installation; offshore platform; offshore rig.