BP Prudhoe Bay Royalty Trust operates as a grantor trust in the United States. The company holds overriding royalty interests constituting a non-operational interest in minerals in the Prudhoe Bay oil field located on the North Slope in Alaska. The Prudhoe Bay field extends approximately 12 miles by 27 miles and contains approximately 150,000 gross productive acres. As of December 31, 2012, its estimated net remaining proved reserves were 75.517 million barrels of oil and condensate, of which 70.676 million barrels are proved developed reserves and 4.841 million barrels are proved undeveloped reserves. The company was founded in 1989 and is based in Austin, Texas.