BP Biobutanol LLC in 2009. In 2009, BP obtained a production contract during the 2009/2010 Iraqi oil services contracts tender to develop the Rumaila field with joint venture partner CNPC, which contain an estimated of oil, accounting for 12% of Iraq's oil reserves estimated at . In June 2010, the BP/CNPC consortium took over development of the field, which was the epicentre of the 1990 Gulf war. On 1 October 2010, Bob Dudley replaced Tony Hayward as the company's CEO after the Deepwater Horizon oil spill. After the oil spill BP announced a divestment program to sell about $38 billion worth
Ixtoc I oil spill or littoral communities, which were not the subject of this study. 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