Several BSEE Safety Alerts have just been released. Of particular importance to those interested in deepwater drilling is the attached alert describing two separate Emergency Disconnect Sequence (EDS) incidents.
The EDS (see the diagram above) is a critically important safety protocol that ensures that a well is sealed and the riser and rig are disconnected from the blowout preventer in the event of a well control emergency, unforeseen weather/ocean conditions, loss of power, or positioning system malfunction. Note that the Macondo blowout could have been prevented if the Deepwater Horizon crew had activated the EDS in a timely manner.
The two EDS events cited in the Safety Alert were presumably the March 28, 2025 and March 5, 2024 incidents investigated by BSEE district offices. The drillships were the Stanley Lafosse and the Deepwater Poseidon The investigation reports provide detailed information on these incidents.
Unintended riser disconnects not associated with EDS activations are a related safety and pollution concern that necessitated the issuance of a 2000 Notices to Lessees that was subsequently updated:
Bud's Offshore Energy (BOE) 
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