This week’s domestic crude oil production estimate incorporates a re-benchmarking that affected estimated volumes by less than 50,000 barrels per day, which is about 0.3% of this week’s estimated production total. The petroleum supply situation in the context of historical information and selected prices. The Strategic Petroleum Reserve (SPR) is the world's largest supply of emergency crude oil. The federally-owned oil stocks are stored in huge underground salt caverns along the coastline of the Gulf of Mexico. Since its inception in 1983, the IEA's Oil Market Report (OMR) has become recognised as one of the world’s most authoritative and timely sources of data, forecasts and analysis on the global oil market – including detailed statistics and commentary on oil supply, demand, inventories, prices and refining activity, as well as oil trade for OECD and selected non-OECD countries.