Deepwater Horizon explosion Deepwater Horizon explosion The "Deepwater Horizon" drilling rig explosion was the April 20, 2010, explosion and subsequent fire on the "Deepwater Horizon" semi-submersible Mobile Offshore Drilling Unit (MODU), which was owned and operated by Transocean and drilling for BP in the Macondo Prospect oil field about southeast off the Louisiana coast. The explosion and subsequent fire resulted in the sinking of the "Deepwater Horizon" and the deaths of 11 workers; 17 others were injured. The same blowout that caused the explosion also caused a massive offshore oil spill in the Gulf of Mexico, considered the largest accidental marine oil spill
Deepwater Horizon oil spill a 193-page report on its web site. The report places some of the blame for the accident on BP but also on Halliburton and Transocean. The report found that on 20 April 2010, managers misread pressure data and gave their approval for rig workers to replace drilling fluid in the well with seawater, which was not heavy enough to prevent gas that had been leaking into the well from firing up the pipe to the rig, causing the explosion. The conclusion was that BP was partly to blame, as was Transocean, which owned the rig. Responding to the report, Transocean