Transocean's Macondo report blames BP for oil spill

Paula DittrickSenior Staff WriterTransocean Ltd., owner of the Deepwater Horizon semisubmersible drilling rig that exploded and sank following the Macondo well blowout on Apr. 20, 2010, said BP PLC used a poor well design and failed to properly confirm critical cement tests.The incident killed 11 people on the semi and resulted in a massive oil spill in the Gulf of Mexico. BP, which operated the Macondo well, issued no immediate response to Transocean's report.In releasing its investigation report on June 22, Transocean reaffirmed its earlier statements that the Deepwater Horizon blowout preventer was maintained properly. The BOP's inability to seal stemmed from circumstances caused by th...

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