Investigation Report
Hydrocarbons Discharged Through Produced Water System During Well Restart
06-07-2021 13:00 G09868 MC 778 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionHydrocarbon release
- Environmental monitoring and quality assurancePollution reporting
- Upstream oil and gas
- Marine waters
Read at BSEEOpens the document on bsee.gov
Summary
BSEE investigated a Thunder Horse pollution event during restart of the long-shut-in S5 well. Float-cell capacity was exceeded during ramp-up, and an estimated four barrels of hydrocarbons entered the Gulf of Mexico through produced-water discharge over four days. Sampling supported the estimate; BP planned a slower initial liquid-rate ramp-up.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Environmental monitoring and quality assurance.
Classifications: Pollution reporting.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.