 The Tiber Oil Field is a deepwater offshore oil field located in the Keathley Canyon block 102 of the United States sector of the Gulf of Mexico . The deepwater field ( defined as water depth 1 @,@ 300 to 5 @,@ 000 feet ( 400 to 1 @,@ 520 m ) , ) was discovered in September 2009 and it is operated by BP . Described as a " giant " find , it is estimated to contain 4 to 6 billion barrels ( 640 × 10 ^ 6 to 950 × 10 ^ 6 m3 ) of oil in place . Although BP states it is too early to be sure of the size – a " huge " field is usually considered to contain 250 million barrels ( 40 × 10 ^ 6 m3 ) . It required the drilling of a 10 @,@ <unk> m ( 35 @,@ 056 ft ) deep well under 1 @,@ 260 m ( 4 @,@ 130 ft ) of water , making it one of the deepest wells ever drilled at the time of discovery . 
