Canada. The Egret K-36 well, drilled jointly by Amoco, Imperial and Skelly in 1973, was a critical milestone in establishment of the basin's hydrocarbon prospectivity. Egret K-36 encountered the prolific oil source rock later assigned the name Egret Member, plus thick tilted beds of porous sandstones of the Jeanne d'Arc and Hibernia formations. Despite this early establishment that all the components needed for an active petroleum system were present, there was a four-year hiatus in drilling in the Jeanne d'Arc Basin following termination of the Adolphus D-50 well in January 1975. The first well spud after the drilling lull proved that giant oil fields could be found in this basin. The Hibernia P-15 discovery well, initiated on May 27, 1979, encountered and test flowed oil from the Jeanne d'Arc, Hibernia and Ben Nevis formations. This well heralded a vibrant era of oil exploration and development that has significantly impacted the economy of the province of Newfoundland and Labrador. Including Hibernia P-15, there have been eighteen officially declared Significant Discoveries in the Jeanne d'Arc Basin and on the adjacent structural high area to the East up to the first quarter of 2012. These are: Hibernia P-15, terminated on 21-Oct-1979 Ben Nevis I-45, terminated 30-Aug-1980 South Tempest G-88, terminated 26-Apr-1981 Hebron I-13, terminated 12-Sep-1981 Nautilus C-92, terminated 19-Feb-1982 North Dana I-43, terminated 15-Jan-1984 Terra Nova K-08, terminated 11-Jun-1984 Trave E-87, terminated 18-Mar-1984 South Mara C-13, terminated 16-Oct-1984 White Rose N-22, terminated 04-Jan-1985 West Ben Nevis B-75, terminated 02-Apr-1985 Mara M-54, terminated 14-May-1985 North Ben Nevis P-93, terminated 01-Nov-1985 Fortune G-57, terminated 09-Sep-1986 East Rankin H-21, terminated 27-Oct-1988 Springdale M-29, terminated 14-May-1989 King's Cove A-26, terminated 17-Jun-1990 West Bonne Bay C-23, terminated 24-Jan-1998 Additionally, the North Amethyst K-14 exploration well, terminated on November 12, 2006 was declared a Commercial Discovery and was awarded a Production Licence effective November 19, 2007 by the Canada-Newfoundland and Labrador Offshore Petroleum Board, a joint federal-provincial regulatory agency. As of early 2012, there are four oil producing fields in the Jeanne d'Arc Basin: Hibernia, Terra Nova, White Rose, and North Amethyst. North Amethyst is the first tie-back field in the Jeanne d'Arc Basin, with production tied into the White Rose Field facilities. The Hibernia oilfield has also been expanded into the Hibernia South Extension area. A number of adjacent fault blocks that comprise the composite Hebron oil field are expected to host the next hydrocarbon production facility. Notes