Knotty Head
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Knotty Head is the deepest oil well drilled in the Gulf of Mexico. It is drilled in 3,500 feet of water and 30,589 feet below the sea floor. It is owned jointly by Chevron, Anadarko Petroleum Corporation, BHP Billiton and Nexen Inc. with each having 25% of the share. Initially, the well was estimated to hold 350 million to one billion barrels of oil, but additional tests have cut that estimate down to 200 million to 500 million. [1]