BP Internal Report Said to Find Engineers Misread Test Results
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BP Plc’s internal investigation of the Deepwater Horizon rig disaster found company engineers misinterpreted pressure data that indicated a blowout was imminent, according to a person familiar with the report.
BP managers aboard the Transocean Ltd.-owned rig misread a test of the Macondo well’s stability on April 20 and began replacing drilling fluid, which is heavier than oil and natural gas, with seawater, said the person, who spoke on condition of anonymity because the report’s findings haven’t been publicly released.