Deepwater Horizon oil spill and Halliburton placed all blame on BP. On 9 November 2010, a report by the Oil Spill Commission said that there had been "a rush to completion" on the well and criticised poor management decisions. "There was not a culture of safety on that rig," the co-chair said. The National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling released a final report on 5 January 2011. The panel found that BP, Halliburton, and Transocean had attempted to work more cheaply and thus helped to trigger the explosion and ensuing leakage. The report stated that "whether purposeful or
Ixtoc I oil spill Ixtoc I oil spill Ixtoc I was an exploratory oil well being drilled by the semi-submersible drilling rig "Sedco 135" in the Bay of Campeche of the Gulf of Mexico, about northwest of Ciudad del Carmen, Campeche in waters deep. On 3 June 1979, the well suffered a blowout resulting in one of the largest oil spills in history. Mexico's state-owned oil company Pemex (Petróleos Mexicanos) was drilling a deep oil well when the drilling rig "Sedco 135" lost drilling mud circulation. In modern rotary drilling, mud is circulated down the drill pipe and back up the well bore to