The Atlantis oil field is the third largest oil field in the Gulf of Mexico. The field was discovered in 1998 and is located at the Green Canyon blocks 699, 700, 742, 743, and 744 in United States federal waters in the Gulf of Mexico about from the coast of Louisiana. The oil field lies in water depths ranging from . The subsea structure of Atlantis has long been the target of safety critics. Reserves The Atlantis oil field has estimated ultimate reserves of about . The supermajor BP owns a 56% interest in the field in conjunction with BHP Billiton Petroleum Deepwater which owns a 44% interest. History The oil field was discovered in 1998 by the Ocean America semi-submersible, mobile drilling rig operating in a water depth of . The discovery was later confirmed by wells drilled by GSF C.R. Luigs and Glomar Explorer. Production started in October 2007. Production The field is expected to produce about of oil and of gas. The Atlantis field has been developed with a semi-submersible production platform, Atlantis PQ, designed by GVA Consultants and built by Daewoo Shipbuilding & Marine Engineering in South Korea. In addition to the semi-submersible platform, field development uses a network of wet-tree subsea wells. The subsea elements of the Atlantis field were designed and fabricated by PS Fabricators. It is one of the largest to undergo systems integration testing (SIT) on land, also at PS Fabricators SIT site. This includes positioning the components as they would be positioned subsea, pressure testing, pig testing, etc. The system itself is rigorously tested to ensure its safety subsea. Safety practices Food and Water Watch lawsuit On 17 May 2010, consumer group Food & Water Watch, with former BP contractor Kenneth Abbott, filed a complaint in the United States district court, seeking to stop production on the platform Atlantis PQ until safety documents are produced. The suit was dropped by the plaintiff and re-file naming BP as a defendant, as required once BP became involved. According to Food & Water Watch, BP failed to supplement its document production with new information regarding Atlantis's suspension the second quarter of 2012, which caused much of the company's $3.7 billion loss in profits that quarter. US government scrutiny The Deepwater Horizon drilling rig explosion has given new impetus to a number of Congressional Representatives to pressure the Minerals Management Service (MMS) to investigate safety