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Main articles: "Deepwater Horizon explosion and "Deepwater Horizon oil spill

An explosion on the drilling rig Deepwater Horizon occurred on April 20, 2010, killing 11 workers. The Deepwater Horizon sank on April 22, 2010, in water approximately 5,000 feet (1,500 m) deep, and was located resting on the "seafloor approximately 1,300 feet (400 m) (about a quarter of a mile) northwest of the well.[11][12][13]

Following the rig explosion and subsea blowout, BP started a relief well using "Transocean's "Development Driller III on May 2, 2010. The relief well would potentially take up to three months to drill. BP started a second relief well using Transocean's "GSF Development Driller II on May 16, 2010.[14]

The well was successfully sealed off from flow into the sea on August 4, 2010 by a "static kill" (injection of heavy fluids and cement into the "wellhead at the mudline).["citation needed] To further ensure the plugging of the original well, the first relief well established communication with the original wellbore near total depth and injected heavy fluids and cement. These efforts should have completely sealed off the Macondo Prospect well at that point.["citation needed]

See also[edit]


  1. ^ Maass, Peter (2011-09-29). "What Happened at the Macondo Well?". "The New York Review of Books. LVIII (14): 38–41. Archived from the original on 2016-10-01. Retrieved 2011-09-22. 
  2. ^ Casselman, Ben; Gold, Russell (2010-05-27). "Unlikely Decisions Set Stage for BP Disaster". "The Wall Street Journal; "Dow Jones Newswires. Retrieved 2014-02-26. 
  3. ^ a b c "Offshore Field Development Projects: Macondo". Subsea.Org. Retrieved 2010-05-18. 
  4. ^ a b O'Cinneide, Eoin (2011-10-17). "BP, Anadarko in $4bn Macondo settlement". "Upstream Online. NHST Media Group. (subscription required). Retrieved 2011-10-20. 
  5. ^ Klump, Edward (2010-05-13). "Spill May Hit Anadarko Hardest as BP's Silent Partner". "Bloomberg. Retrieved 2010-05-19. 
  6. ^ Escalante, Linda, "The Macondo Oil Spill", "NRDC Switchboard blog, June 7, 2010. Retrieved 2011-06-08.
  7. ^ "Central Gulf of Mexico Planning Area Lease Sale 206 Information". US Minerals Management Service. 2008-08-08. Retrieved 2010-06-06. 
  8. ^ "Macondo Prospect, Gulf of Mexico, USA". Net Resources International. Retrieved 2010-05-18. 
  9. ^ "Documents show BP chose a less-expensive, less-reliable method for completing well in Gulf oil spill". "Orlando Sentinel. Retrieved 2010-05-23. 
  10. ^ Parsons, Paul. "Part 3 - The Macondo Well". The Macondo Well Blowout. 
  11. ^ Robertson, Cambell; Robbins, Liz (2010-04-22). "Oil Rig Sinks in the Gulf of Mexico". "The New York Times. Retrieved 2010-04-22. 
  12. ^ Resnick-Ault, Jessica; Klimasinska, Katarzyna (April 22, 2010). "Transocean Oil-Drilling Rig Sinks in Gulf of Mexico". "Bloomberg. Retrieved April 22, 2010. 
  13. ^ "Deepwater Horizon Incident, Gulf of Mexico". "National Oceanic and Atmospheric Administration, "Office of Response and Restoration. 2010-04-24. Retrieved 2010-04-25. 
  14. ^ "Update on Gulf of Mexico Oil Spill Response - 24 May" (Press release). "BP. 2010-05-24. Retrieved 2010-05-24. 

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