The scientific study of peak oil began in the 1950′s, when Shell geophysicist M. King Hubbert reported on the evolution of production rates in oil and gas fields. In a 1956 paper Hubbert suggested that oil production in a particular region would approximate a bell curve, increasing exponentially during the early stages of production before eventually slowing, reaching a peak when approximately half of a field had been extracted, and then going into terminal production decline. Hubbert applied his methodology to oil production for the Lower 48 US states and offshore areas. He estimated that the ultimate potential reserve of the Lower 48 US states and offshore areas was 150 billion barrels of oil. Based on that reserve estimate, the 6.6 million barrels per day (bpd) extraction rate in 1955, and the 52.5 billion barrels of oil that had been previously produced in […]