Schlumberger in 1985 for $1 billion and French drilling company Forages et Exploitations Pétrolières (Forex) founded in 1942 in German-occupied France for drilling in North Africa. Schlumberger first got a foothold in the company in 1959 and then assumed total control in 1964, and renamed it Forex Neptune Drilling Company. In 2000, Transocean acquired R&B Falcon Corporation, owner of 115 drilling rigs, in a deal valued at $17.7 billion. With the acquisition, Transocean gained control of what at the time was the world's largest offshore operation. Among R&B Falcon's assets was the Deepwater Horizon. R&B Falcon had acquired Cliffs Drilling Company in 1998. In 2005, the company's Discoverer Spirit rig set a world record for the deepest offshore oil and gas well of . In 2007, the US Department of Justice and the Securities and Exchange Commission filed a case against Transocean, alleging violations of the Foreign Corrupt Practices Act. The case alleged that Transocean paid bribes through its freight forwarding agents to Nigerian customs officials. Transocean later admitted to approving the bribes and agreed to pay US$13,440,000 to settle the matter. In 2007, the company merged with GlobalSantaFe Corporation in a transaction that created a company with an enterprise value of $53 billion. Shareholders of GlobalSantaFe Corporation received $15 billion of cash as well as stock in the new company for their shares. Robert E. Rose, who was non-executive chairman of GlobalSantaFe, was made Transocean's chairman. Rose had been chairman of Global Marine prior to its 2001 merger with Santa Fe International Corporation. In 2008, the company moved its headquarters to Switzerland, resulting in a significantly lower tax rate. In September 2009, its Deepwater Horizon rig established a well, the deepest well in history – more than 5,000 feet deeper than its stated design specification. In 2010, Transocean was implicated in the Deepwater Horizon oil spill resulting from the explosion of one of its oil rigs in the Gulf of Mexico that was leased to BP. In 2011, the company acquired Aker Drilling, which owned 4 harsh environment rigs used for drilling near Norway. In 2012, the company sold 38 shallow water rigs and narrowed its focus on high-specification deepwater rigs. In 2013, the company was added to the S&P 500 index. In February 2015, CEO Steven Newman quit following a $2.2 billion quarterly loss. Effective on 30 March 2016, the company delisted its shares from the SIX Swiss