Investigation Report
Drilling Mud Leak Through Riser Flex-Joint Test Port
02-09-2007 08:00 G26313 GC/468 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionLoss of containmentMechanical failure
- DrillingInspection and maintenance
- Energy and process isolation
- Upstream oil and gas
Summary
Investigation of synthetic-based drilling mud leakage through a riser flex-joint test port. The report attributes the leak to failure of a manufacturer-installed threaded plug, with tar-related internal pressure suggested as a possible contributor. It describes ROV inspection, well shut-in, drill-pipe isolation and flex-joint replacement, with total mud loss estimated at 862 barrels.
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: Energy and process isolation; isolation; energy isolation.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.