Mitsui Oil Exploration Mitsui Oil Exploration It was one of 17 Mitsui companies that were spun off on July 19, 1969. Its core areas are Thailand, where it drills principally in the Gulf of Thailand in conjunction with Chevron, and Vietnam and Cambodia. In the United States Mitsui's subsidiary is MOEX USA Corp and is headquartered in 9 Greenway Plaza in Houston. In September 2007 it established subsidiary MOEX Offshore 2007 LLC which entered into a partnership with BP for drilling in the Gulf of Mexico. On April 20, 2010, its rig the Deepwater Horizon exploded and sank, causing a massive oil spill.
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