 In 1946, Magnolia Petroleum (now ExxonMobil) drilled at a site off the coast, erecting a platform in of water off St. Mary Parish, Louisiana.In early 1947, Superior Oil erected a drilling and production platform in of water some off Vermilion Parish, La.But it was Kerr-McGee Oil Industries (now Occidental Petroleum), as operator for partners Phillips Petroleum (ConocoPhillips) and Stanolind Oil & Gas (BP) that completed its historic Ship Shoal Block 32 well in October 1947, months before Superior actually drilled a discovery from their Vermilion platform farther offshore.