Peak oil – Wiki Article

Peak oil is the point in time when the maximum rate of petroleum extraction is reached, after which the rate of production is expected to enter terminal decline. Global production of oil fell from a high point in 2005 at 74 mb/d, but has since rebounded setting new records in both 2011 and 2012. There is active debate as to when global peak oil will occur, how to measure peak oil, and which types of liquid fuels to include.

The aggregate production rate from an oil field over time usually grows until the rate peaks and then declines—sometimes rapidly—until the field is depleted. This concept is derived from the Hubbert curve, and has been shown to sometimes be applicable to the sum of a nation’s domestic production rate, and similarly to the global rate of petroleum production. However, the discovery of new fields, the development of new production techniques and the exploitation of unconventional supplies can disrupt this correlation. Peak oil is often confused with oil depletion; peak oil is the point of maximum production, while depletion refers to a period of falling reserves and supply.

M. King Hubbert created and first used the models behind peak oil in 1956 to accurately predict that United States oil production would peak between 1965 and 1971. His logistic model, now called Hubbert peak theory, and its variants have described with reasonable accuracy the peak and decline of production from regions, and countries, and has also proved useful in other limited-resource production-domains. According to the Hubbert model, the production rate of a limited resource will follow a roughly symmetrical logistic distribution curve (sometimes incorrectly compared to a bell-shaped curve) based on the limits of exploitability and market pressures.

Some observers, such as petroleum industry experts Kenneth S. Deffeyes and Matthew Simmons, predict negative global economy implications following a post-peak production decline—and oil price increase—due to the high dependence of most modern industrial transport, agricultural, and industrial systems on the low cost and high availability of oil. Predictions vary greatly as to what exactly these negative effects would be.

In 2008 oil prices reached a record high of $145/barrel. Governments sought alternatives to oil, particularly the use of ethanol, but that had the unintended consequence of creating higher food prices, particularly in the developing countries. Throughout the first two quarters of 2008, there were signs that a global recession was being made worse by a series of record oil prices.

Optimistic estimations of peak production forecast the global decline will begin after 2020, and assume major investments in alternatives will occur before a crisis, without requiring major changes in the lifestyle of heavily oil-consuming nations. These models show the price of oil at first escalating and then retreating as other types of fuel and energy sources are used. Pessimistic predictions of future oil production are that either the peak has already occurred, that oil production is on the cusp of the peak, or that it will occur shortly. In 2013 the International Energy Agency (IEA) projected that global oil production capacity would grow 8.4 mb/d over the next 5 years.

Demand for oil

The demand side of peak oil is concerned with the consumption over time, and the growth of this demand. World crude oil demand grew an average of 1.76% per year from 1994 to 2006, with a high of 3.4% in 2003–2004. After reaching a high of 85.6 million barrels (13,610,000 m3) per day in 2007, world consumption decreased in both 2008 and 2009 by a total of 1.8%, due to rising fuel costs. Despite this lull, world demand for oil is projected to increase 21% over 2007 levels by 2030 (104 million barrels per day (16.5×10^6 m3/d) from 86 million barrels (13.7×10^6 m3)), due in large part to increases in demand from the transportation sector.