Investigation Report
Synthetic-Based Mud Release During Drilling
11-24-2012 11:30 G21444 KC/875 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionLoss of containmentMechanical failure
- Drilling
- Pollution reporting
- Upstream oil and gas
- Offshore installation
Summary
An investigation examines a synthetic-based mud release of approximately 14 barrels during drilling on Ensco 8500 at Keathley Canyon Block 875. Analysis identified wiper-seal failure and probable packer debonding. Energising the secondary packer stopped further discharge; no visible sheen or recoverable quantity was reported. The first-page incident details conflict with the narrative.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Pollution reporting.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.