HOUSTON/WASHINGTON (Reuters) - Failure to react to repeated signs of problems with BP Plc's Macondo oil well in the Gulf of Mexico and bypassing basic well control standards caused last year's deadly blowout, the flag state for the drilling rig that exploded and sank said on Wednesday.
The Marshall Islands, where Transocean Ltd registered the doomed Deepwater Horizon rig, also said in a report on its investigation that failure to follow well abandonment plans approved by U.S. regulators played a part.
The rupture and explosion killed 11 workers and spewed more than 4 million barrels of crude into the Gulf in the worst-ever U.S. offshore oil spill.