The Deepwater Horizon oil spill is an oil spill in the Gulf of Mexico which flowed unabated for three months in 2010, and continues to seep . It is the largest accidental marine oil spill in the history of the petroleum industry. The spill stemmed from a sea-floor oil gusher that resulted from the 20 April 2010, explosion of Deepwater Horizon, which drilled on the BP-operated Macondo Prospect. The explosion killed 11 men working on the platform and injured 17 others. On 15 July 2010, the gushing wellhead was capped, after it had released about 4.9 million barrels of crude oil. An... estimated 53,000 barrels per day escaped from the well just before it was capped. It is believed that the daily flow rate diminished over time, starting at about 62,000 barrels per day and decreasing as the reservoir of hydrocarbons feeding the gusher was gradually depleted. On 19 September 2010, the relief well process was successfully completed, and the federal government declared the well "effectively dead".
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| Occurred: |
April 20, 2010
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| Location: | Gulf of Mexico |