Judge approves Transocean's plea deal in oil spill

U.S. District Judge Jane Triche Milazzo accepted Transocean's plea and imposed the agreed-upon sentence during a hearing Thursday. The Swiss-based drilling company could have withdrawn from the deal if she had rejected it.

Milazzo said she had received no letters objecting to the settlement.

Transocean agreed last month to plead guilty to a misdemeanor charge of violating the Clean Water Act. The company also agreed to pay $1 billion in civil penalties. A different judge will decide whether to accept that part of the settlement.

Transocean owned the rig Deepwater Horizon, which exploded and sank over BP's Macondo well in April 2010. The accident killed 11 men and sparked the nation's worst offshore oil disaster.

Much of the $1.4 billion Transocean agreed to pay will fund environmental-restoration projects and spill-prevention research and training.

BP separately agreed to pay a record $4 billion in criminal penalties and has pleaded guilty to manslaughter and other criminal charges related to the spill. The deal with BP PLC, which U.S. District Judge Sarah Vance approved last month, doesn't resolve the federal government's civil claims against the London-based oil company.

Last week's court filing says the failure by BP rig supervisors and Transocean crew members to properly investigate abnormally high pressure readings during a crucial safety test, called a negative test, was a "proximate cause" of the blowout and spill. But it was BP that determined whether and how the testing would be conducted, the filing adds.