The Peak Oil story got some things right. Back in 1998, Colin Campbell and Jean Laherrère wrote an article published in Scientific American called, “The End of Cheap Oil.” In it they said:
Our analysis of the discovery and production of oil fields around the world suggests that within the next decade, the supply of conventional oil will be unable to keep up with demand.
There is no single definition for conventional oil. According to one view, conventional oil is oil that can be extracted by conventional methods. Another holds it to be oil that can beextracted inexpensively. Other authors list specific types of oil that require specialized techniques, such as very heavy oil and oil from shale formations, that are considered unconventional.