A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956
Historical US crude oil production showing similarity to a Hubbert curve

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.[1] Every oil well and field exhibits similar characteristics of being discovered, the logistics to extract the oil being put in place, a peak or plateau of production, followed by a decline.[2] US domestic oil production peaked in 1970.[3] Global production of oil fell from a high point in 2005 at 74 mb/d, but has since rebounded, and 2011 figures show slightly higher levels of production than in 2005, as the definition of "oil" was changed in 2007 to include synthetic liquids.[4] There is active debate as to how to measure peak oil, and which types of liquid fuels to include. Most of the remaining oil is from unconventional sources. Rough estimates indicate that out of an available 2 trillion barrels of oil, about half has been consumed.

Peak oil is determined by the observed production rates of individual oil wells, projected reserves and the combined production rate of a field of related oil wells. In order to understand physical peak oil, the growing effort for production must be considered. Physical peak oil occurs earlier, because the overall efforts for production have increased, expanding production.[5][6]

The aggregate production rate from an oil field over time usually grows exponentially 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 be applicable to the sum of a nation’s domestic production rate, and is similarly applied to the global rate of petroleum production. 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. The difference between one country reaching peak oil and the world reaching peak oil, though is not incremental but a step change. When production declines in one country, the world can change to another country. When world production declines, there is no where else to turn, and either other sources for oil need to be found, such as synthetic oil, or other sources of energy need to be used, such as renewable energy. Fortunately the world will never run out of energy. Almost all of the energy we use from all sources is from the Sun, and more solar energy reaches the surface of the Earth in an hour than we use in a year. Oil is stored up energy that took millions of years to create. Even though less than 1% of energy was obtained from wind and solar power in 2009, we now know how to use 100% renewable energy, using existing technology.

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 1970.[7] His logistic model, now called Hubbert peak theory, and its variants have described with reasonable accuracy the peak and decline of production from oil wells, fields, regions, and countries,[8] 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 speculators drove oil prices to 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 third world.

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.[9] Pessimistic predictions of future oil production are that either the peak has already occurred,[10][11][12][dead link][13] that oil production is on the cusp of the peak, or that it will occur shortly.[14][15] The International Energy Agency (IEA) says production of conventional crude oil peaked in 2006.[16][17] 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.[18]

Demand for oil

Petroleum: top consuming nations, 1960-2006

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.[19] 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.[20][21][22] A study published in the journal Energy Policy predicted demand would surpass supply by 2015 (unless constrained by strong recession pressures caused by reduced supply).[15]

The world increased its daily oil consumption from 63 million barrels (10,000,000 m3) (Mbbl) in 1980 to 85 million barrels (13,500,000 m3) in 2006.

Energy demand is distributed amongst four broad sectors: transportation, residential, commercial, and industrial.[23][24] In terms of oil use, transportation is the largest sector and the one that has seen the largest growth in demand in recent decades. This growth has largely come from new demand for personal-use vehicles powered by internal combustion engines.[25] This sector also has the highest consumption rates, accounting for approximately 68.9% of the oil used in the United States in 2006,[26] and 55% of oil use worldwide as documented in the Hirsch report. Transportation is therefore of particular interest to those seeking to mitigate the effects of peak oil.

United States crude oil production peaked in 1970. By 2005, imports were twice as great as production.

Although demand growth is highest in the developing world,[27] the United States is the world's largest consumer of petroleum. Between 1995 and 2005, U.S. consumption grew from 17,700,000 barrels per day (2,810,000 m3/d) to 20,700,000 barrels per day (3,290,000 m3/d), a 3,000,000 barrels per day (480,000 m3/d) increase. China, by comparison, increased consumption from 3,400,000 barrels per day (540,000 m3/d) to 7,000,000 barrels per day (1,100,000 m3/d), an increase of 3,600,000 barrels per day (570,000 m3/d), in the same time frame.[28]

As countries develop, industry and higher living standards drive up energy use, most often of oil. Thriving economies, such as China and India, are quickly becoming large oil consumers.[29] China has seen oil consumption grow by 8% yearly since 2002, doubling from 1996-2006.[27] In 2008, auto sales in China were expected to grow by as much as 15-20%, resulting in part from economic growth rates of over 10% for five years in a row.[30]

Although swift, continued growth in China is often predicted, others predict China's export-dominated economy will not continue such growth trends due to wage and price inflation and reduced demand from the United States.[31] India's oil imports are expected to more than triple from 2005 levels by 2020, rising to 5 million barrels per day (790×10^3 m3/d).[32]

The International Energy Agency estimated in January 2009 that oil demand fell in 2008 by 0.3%, and that it would fall by 0.6% in 2009. Oil consumption had not fallen for two years in a row since 1982-1983.[33]

The Energy Information Administration (EIA) estimated that the United States' demand for petroleum-based transportation fuels fell 7.1% in 2008, which is "the steepest one-year decline since at least 1950." The agency stated that gasoline usage in the United States may have peaked in 2007, in part due to increasing interest in and mandates for use of biofuels and energy efficiency.[34][35]

The EIA now expects global oil demand to increase by about 1,600,000 barrels per day (250,000 m3/d) in 2010. Asian economies, in particular China, will lead the increase.[36] China’s oil demand may rise more than 5% compared with a 3.7% gain in 2009, the CNPC said.[37]


World population

Another significant factor on petroleum demand has been human population growth. Oil production per capita peaked in 1979.[38] The United States Census Bureau predicts that the world population in 2030 will be almost double that of 1980.[39] In 2007, author Matt Savinar predicted that oil production in 2030 will have declined back to 1980 levels as worldwide demand for oil significantly out-paces production.[40][41] Physicist Albert Bartlett argues that the decline of the rate of oil production per capita has gone undiscussed because population control is considered politically incorrect by some.[42]

Oil production per capita has declined from 5.26 barrels per year (0.836 m3/a)in 1980 to 4.44 barrels per year (0.706 m3/a) in 1993,[39][43] but then increased to 4.79 barrels per year (0.762 m3/a) in 2005.[39][43] In 2006, the world oil production took a downturn from 84.631 to 84.597 million barrels per day (13.4553×10^6 to 13.4498×10^6 m3/d) although population has continued to increase. This has caused the oil production per capita to drop again to 4.73 barrels per year (0.752 m3/a).[39][43]

One factor that has so far helped ameliorate the effect of population growth on demand is the decline of population growth rate since the 1970s. In 1970, the population grew at 2.1%. By 2007, the growth rate had declined to 1.167%.[44] However, oil production was, until 2005, still outpacing population growth to meet demand. World population grew by 6.2% from 6.07 billion in 2000 to 6.45 billion in 2005,[39] whereas according to BP, global oil production during that same period increased from 74.9 to 81.1 million barrels (11.91×10^6 to 12.89×10^6 m3), or by 8.2%.[45] or according to EIA, from 77.762 to 84.631 million barrels (12.3632×10^6 to 13.4553×10^6 m3), or by 8.8%.[43]

Agricultural effects and population limits

Since supplies of oil and gas are essential to modern agriculture techniques, a fall in global oil supplies could cause spiking food prices and unprecedented famine in the coming decades.[46][note 1] Geologist Dale Allen Pfeiffer contends that current population levels are unsustainable, and that to achieve a sustainable economy and avert disaster the United States population would have to be reduced by at least one-third, and world population by two-thirds.[47][48]

The largest consumer of fossil fuels in modern agriculture is ammonia production (for fertilizer) via the Haber process, which is essential to high-yielding intensive agriculture. The specific fossil fuel input to fertilizer production is primarily natural gas, to provide hydrogen via steam reforming. Given sufficient supplies of renewable electricity, hydrogen can be generated without fossil fuels using methods such as electrolysis. For example, the Vemork hydroelectric plant in Norway used its surplus electricity output to generate renewable ammonia from 1911 to 1971.[49]

Iceland currently generates ammonia using the electrical output from its hydroelectric and geothermal power plants, because Iceland has those resources in abundance while having no domestic hydrocarbon resources, and a high cost for importing natural gas.[50]

Limited demand substitution between energy sources

Beyond the steady rise of world energy demand, World Pensions Council (WPC) research suggests that most experts and policy makers expect oil and natural gas to improve their global market position vis-a-vis renewable and nuclear energy, notably because of the “natural bottlenecks hindering the exploitation of renewable energy sources such as the biofuel vs. food on the table paradox in California and Latin America, the rapid denuclearization of Japan and Germany and the natural limitations of hydro and geo supplies in Europe and the Americas” [51]

Supply of oil

Overall supply levels

According to the IEA's Oil Market Report dated 13 December 2011, global oil supply had risen to a record high of 90.0 mb/day by November 2011. Of this, oil supply from OPEC nations represented only 30.68 mb/day (34.1% of the total).[52]


Growing gap between discovery and production
All the easy oil and gas in the world has pretty much been found. Now comes the harder work in finding and producing oil from more challenging environments and work areas.
— William J. Cummings, Exxon-Mobil company spokesman, December 2005[53]
It is pretty clear that there is not much chance of finding any significant quantity of new cheap oil. Any new or unconventional oil is going to be expensive.
— Lord Ron Oxburgh, a former chairman of Shell, October 2008[54]

To pump oil, it first needs to be discovered. The peak of world oilfield discoveries occurred in 1965[55] at around 55 billion barrels (8.7×109 m3)(Gb)/year.[56] According to the Association for the Study of Peak Oil and Gas (ASPO), the rate of discovery has been falling steadily since. Less than 10 Gb/yr of oil were discovered each year between 2002-2007.[57] According to a 2010 Reuters article, the annual rate of discovery of new fields has remained remarkably constant at 15-20 Gb/yr.[58]


Proven oil reserves, 2009.
2004 U.S. government predictions for oil production other than in OPEC and the former Soviet Union.

Total possible conventional crude oil reserves include all crude oil with 90-95% certainty of being technically possible to produce (from reservoirs through a wellbore using primary, secondary, improved, enhanced, or tertiary methods), all crude with a 50% probability of being produced in the future, and discovered reserves which have a 5-10% possibility of being produced in the future. These are referred to as 1P/Proven (90-95%), 2P/Probable (50%), and 3P/Possible (5-10%).[59] This does not include liquids extracted from mined solids or gasses (oil sands, oil shales, gas-to-liquid processes, or coal-to-liquid processes).[60]

Many current 2P calculations predict reserves to be between 1150-1350 Gb, but because of misinformation, withheld information, and misleading reserve calculations, it has been reported that 2P reserves are likely nearer to 850-900 Gb.[11][15] Reserves in effect peaked in 1980, when production first surpassed new discoveries, though creative methods of recalculating reserves have made this difficult to establish exactly.[11]

Current technology is capable of extracting about 40% of the oil from most wells. Some speculate that future technology will make further extraction possible,[61][verification needed] but this future technology is usually already considered in Proven and Probable (2P) reserve numbers.

In many major producing countries, the majority of reserves claims have not been subject to outside audit or examination. Most of the easy-to-extract oil has been found.[53] Recent price increases have led to oil exploration in areas where extraction is much more expensive, such as in extremely deep wells, extreme downhole temperatures, and environmentally sensitive areas or where high technology will be required to extract the oil. A lower rate of discoveries per explorations has led to a shortage of drilling rigs, increases in steel prices, and overall increases in costs due to complexity.[62][63]

Concerns over stated reserves

[World] reserves are confused and in fact inflated. Many of the so-called reserves are in fact resources. They're not delineated, they're not accessible, they’re not available for production.
Sadad I. Al-Husseini, former VP of Aramco, presentation to the Oil and Money conference, October 2007.[12]

Al-Husseini estimated that 300 billion barrels (48×10^9 m3) of the world's 1,200 billion barrels (190×10^9 m3) of proven reserves should be recategorized as speculative resources.[12]

Graph of OPEC reported reserves showing refutable jumps in stated reserves without associated discoveries, as well as the lack of depletion despite yearly production.

One difficulty in forecasting the date of peak oil is the opacity surrounding the oil reserves classified as 'proven'. Many worrying signs concerning the depletion of proven reserves have emerged in recent years.[64][65] This was best exemplified by the 2004 scandal surrounding the 'evaporation' of 20% of Shell's reserves.[66]

For the most part, proven reserves are stated by the oil companies, the producer states and the consumer states. All three have reasons to overstate their proven reserves: oil companies may look to increase their potential worth; producer countries gain a stronger international stature; and governments of consumer countries may seek a means to foster sentiments of security and stability within their economies and among consumers.

Major discrepancies arise from accuracy issues with OPEC's self-reported numbers. Besides the possibility that these nations have overstated their reserves for political reasons (during periods of no substantial discoveries), over 70 nations also follow a practice of not reducing their reserves to account for yearly production. Analysts have suggested that OPEC member nations have economic incentives to exaggerate their reserves, as the OPEC quota system allows greater output for countries with greater reserves.[61]

Kuwait, for example, was reported in the January 2006 issue of Petroleum Intelligence Weekly to have only 48 billion barrels (7.6×10^9 m3) in reserve, of which only 24 were fully proven. This report was based on the leak of a confidential document from Kuwait and has not been formally denied by the Kuwaiti authorities. This leaked document is from 2001,[67] so the figure includes oil that has been produced since 2001, roughly 5-6 billion barrels (950×10^6 m3),[28] but excludes revisions or discoveries made since then. Additionally, the reported 1.5 billion barrels (240×10^6 m3) of oil burned off by Iraqi soldiers in the First Persian Gulf War[68] are conspicuously missing from Kuwait's figures.

On the other hand, investigative journalist Greg Palast argues that oil companies have an interest in making oil look more rare than it is, to justify higher prices.[69] This view is contested by ecological journalist Richard Heinberg.[70] Other analysts argue that oil producing countries understate the extent of their reserves to drive up the price.[71]

In November 2009, a senior official at the IEA alleged that the United States had encouraged the international agency to manipulate depletion rates and future reserve data to maintain lower oil prices.[72] In 2005, the IEA predicted that 2030 production rates would reach 120,000,000 barrels per day (19,000,000 m3/d), but this number was gradually reduced to 105,000,000 barrels per day (16,700,000 m3/d). The IEA official alleged industry insiders agree that even 90 to 95,000,000 barrels per day (15,100,000 m3/d) might be impossible to achieve. Although many outsiders had questioned the IEA numbers in the past, this was the first time an insider had raised the same concerns.[72] A 2008 analysis of IEA predictions questioned several underlying assumptions and claimed that a 2030 production level of 75,000,000 barrels per day (11,900,000 m3/d) (comprising 55,000,000 barrels (8,700,000 m3) of crude oil and 20,000,000 barrels (3,200,000 m3) of both non-conventional oil and natural gas liquids) was more realistic than the IEA numbers.[13]

The EUR reported by the 2000 USGS survey of 2,300 billion barrels (370×10^9 m3) has been criticized for assuming a discovery trend over the next twenty years that would reverse the observed trend of the past 40 years. Their 95% confidence EUR of 2,300 billion barrels (370×10^9 m3) assumed that discovery levels would stay steady, despite the fact that discovery levels have been falling steadily since the 1960s. That trend of falling discoveries has continued in the ten years since the USGS made their assumption. The 2000 USGS is also criticized for introducing other methodological errors, as well as assuming 2030 production rates inconsistent with projected reserves.[11]

Unconventional sources

Syncrude's Mildred Lake mine site and plant near Fort McMurray, Alberta

Unconventional sources, such as heavy crude oil, oil sands, and oil shale are not counted as part of oil reserves. However, with rule changes by the SEC,[73] oil companies can now book them as proven reserves after opening a strip mine or thermal facility for extraction. These unconventional sources are more labor and resource intensive to produce, however, requiring extra energy to refine, resulting in higher production costs and up to three times more greenhouse gas emissions per barrel (or barrel equivalent) on a "well to tank" basis or 10 to 45% more on a "well to wheels" basis, which includes the carbon emitted from combustion of the final product.[74][75]

While the energy used, resources needed, and environmental effects of extracting unconventional sources has traditionally been prohibitively high, the three major unconventional oil sources being considered for large scale production are the extra heavy oil in the Orinoco Belt of Venezuela,[76] the Athabasca Oil Sands in the Western Canadian Sedimentary Basin,[77] and the oil shales of the Green River Formation in Colorado, Utah, and Wyoming in the United States.[78][79] Energy companies such as Syncrude and Suncor have been extracting bitumen for decades but production has increased greatly in recent years with the development of Steam Assisted Gravity Drainage and other extraction technologies.[80]

Chuck Masters of the USGS estimates that, "Taken together, these resource occurrences, in the Western Hemisphere, are approximately equal to the Identified Reserves of conventional crude oil accredited to the Middle East."[81] Authorities familiar with the resources believe that the world's ultimate reserves of unconventional oil are several times as large as those of conventional oil and will be highly profitable for companies as a result of higher prices in the 21st century.[82] In October 2009, the USGS updated the Orinoco tar sands (Venezuela) recoverable "mean value" to 513 billion barrels (8.16×1010 m3), with a 90% chance of being within the range of 380-652 billion barrels (103.7×10^9 m3), making this area "one of the world's largest recoverable oil accumulations".[83]

Unconventional resources are much larger than conventional ones.[84]

Despite the large quantities of oil available in non-conventional sources, Matthew Simmons argues that limitations on production prevent them from becoming an effective substitute for conventional crude oil. Simmons states that "these are high energy intensity projects that can never reach high volumes" to offset significant losses from other sources.[85] Another study claims that even under highly optimistic assumptions, "Canada's oil sands will not prevent peak oil," although production could reach 5,000,000 bbl/d (790,000 m3/d) by 2030 in a "crash program" development effort.[86]

Moreover, oil extracted from these sources typically contains contaminants such as sulfur and heavy metals that are energy-intensive to extract and can leave tailings - ponds containing hydrocarbon sludge - in some cases.[74][87] The same applies to much of the Middle East's undeveloped conventional oil reserves, much of which is heavy, viscous, and contaminated with sulfur and metals to the point of being unusable.[88] However, recent high oil prices make these sources more financially appealing.[61] A study by Wood Mackenzie suggests that within 15 years all the world’s extra oil supply will likely come from unconventional sources.[89]

Synthetic sources

Currently, two companies SASOL and Shell, have synthetic oil technology proven to work on a commercial scale. Sasol's primary business is based on CTL (coal-to-liquid) and GTL (natural gas-to-liquid) technology, producing US$4.40 billion in revenues (FY2009). Shell has used these processes to recycle waste flare gas (usually burnt off at the refinery) into usable synthetic oil.

A 2003 article in Discover magazine claimed that thermal depolymerization could be used to manufacture oil indefinitely, out of garbage, sewage, and agricultural waste. The article claimed that the cost of the process was $15 per barrel.[90] A follow-up article in 2006 stated that the cost was actually $80 per barrel, because the feedstock that had previously been considered as hazardous waste now had market value.[91]

A 2007 news bulletin published by Los Alamos Laboratory proposed that hydrogen (possibly produced using hot fluid from nuclear reactors to split water into hydrogen and oxygen) in combination with sequestered CO2 could be used to produce methanol, which could then be converted into gasoline. The press release stated that in order for such a process to be economically feasible, gasoline prices would need to be above $4.60 "at the pump" in U.S. markets. Capital and operational costs were uncertain mostly because the costs associated with sequestering CO2 are unknown.[92] Another problem is that an energy source will be required for both carbon capture and water splitting processes.


OPEC Crude Oil Production 2002-2006 (in 1,000s barrels/day). Source: Middle East Economic Survey

The point in time when peak global oil production occurs defines peak oil. This is because production capacity is the main limitation of supply. Therefore, when production decreases, it becomes the main bottleneck to the petroleum supply/demand equation.

World wide oil discoveries have been less than annual production since 1980.[11] According to several sources, worldwide production is past or near its maximum.[10][11][12][14] World population has grown faster than oil production. Because of this, oil production per capita peaked in 1979 (preceded by a plateau during the period of 1973-1979).[38]

The increasing investment in harder-to-reach oil is a sign of oil companies' belief in the end of easy oil.[53] Additionally, while it is widely believed that increased oil prices spur an increase in production, an increasing number of oil industry insiders are now coming to believe that even with higher prices, oil production is unlikely to increase significantly beyond its current level. Among the reasons cited are both geological factors as well as "above ground" factors that are likely to see oil production plateau near its current level.[93]

Recent work points to the difficulty of increasing production even with vastly increased investment in exploration and production, at least in mature petroleum regions. A 2008 Journal of Energy Security analysis of the energy return on drilling effort in the United States points to an extremely limited potential to increase production of both gas and (especially) oil. By looking at the historical response of production to variation in drilling effort, this analysis showed very little increase of production attributable to increased drilling. This was due to a tight quantitative relationship of diminishing returns with increasing drilling effort: as drilling effort increased, the energy obtained per active drill rig was reduced according to a severely diminishing power law. This fact means that even an enormous increase of drilling effort is unlikely to lead to significantly increased oil and gas production in a mature petroleum region like the United States.[94]

Worldwide production trends

World oil production growth trends were flat from 2005 to 2008. According to a January 2007 International Energy Agency report, global supply (which includes biofuels, non-crude sources of petroleum, and use of strategic oil reserves, in addition to crude production) averaged 85.24 million barrels per day (13.552×10^6 m3/d) in 2006, up 0.76 million barrels per day (121×10^3 m3/d) (0.9%), from 2005.[95] Average yearly gains in global supply from 1987 to 2005 were 1.2 million barrels per day (190×10^3 m3/d) (1.7%).[95] In 2008, the IEA drastically increased its prediction of production decline from 3.7% a year to 6.7% a year, based largely on better accounting methods, including actual research of individual oil field production throughout the world.[96]

Oil field decline
Texas oil production has declined 72% since peaking in 1972

Of the largest 21 fields, at least 9 are in decline.[97] In April 2006, a Saudi Aramco spokesman admitted that its mature fields are now declining at a rate of 8% per year (with a national composite decline of about 2%).[98] This information has been used to argue that Ghawar, which is the largest oil field in the world and responsible for approximately half of Saudi Arabia's oil production over the last 50 years, has peaked.[61][99] The world's second largest oil field, the Burgan field in Kuwait, entered decline in November 2005.[100]

According to a study of the largest 811 oilfields conducted in early 2008 by Cambridge Energy Research Associates (CERA), the average rate of field decline is 4.5% per year. The IEA stated in November 2008 that an analysis of 800 oilfields showed the decline in oil production to be 6.7% a year, and that this would grow to 8.6% in 2030.[101] There are also projects expected to begin production within the next decade that are hoped to offset these declines. The CERA report projects a 2017 production level of over 100 million barrels per day (16×10^6 m3/d).[102]

Kjell Aleklett of the Association for the Study of Peak Oil and Gas agrees with their decline rates, but considers the rate of new fields coming online—100% of all projects in development, but with 30% of them experiencing delays, plus a mix of new small fields and field expansions—overly optimistic.[103] A more rapid annual rate of decline of 5.1% in 800 of the world's largest oil fields was reported by the International Energy Agency in their World Energy Outlook 2008.[104]

Mexico announced that its giant Cantarell Field entered depletion in March 2006,[105] due to past overproduction. In 2000, PEMEX built the largest nitrogen plant in the world in an attempt to maintain production through nitrogen injection into the formation,[106] but by 2006, Cantarell was declining at a rate of 13% per year.[107]

Alaska's oil production has declined 70% since peaking in 1988

OPEC had vowed in 2000 to maintain a production level sufficient to keep oil prices between $22–28 per barrel, but did not prove possible. In its 2007 annual report, OPEC projected that it could maintain a production level that would stabilize the price of oil at around $50–60 per barrel until 2030.[108] On 18 November 2007, with oil above $98 a barrel, King Abdullah of Saudi Arabia, a long-time advocate of stabilized oil prices, announced that his country would not increase production to lower prices.[109] Saudi Arabia's inability, as the world's largest supplier, to stabilize prices through increased production during that period suggests that no nation or organization had the spare production capacity to lower oil prices. The implication is that those major suppliers who had not yet peaked were operating at or near full capacity.[61]

Commentators have pointed to the Jack 2 deep water test well in the Gulf of Mexico, announced 5 September 2006,[110] as evidence that there is no imminent peak in global oil production. According to one estimate, the field could account for up to 11% of U.S. production within seven years.[111] However, even though oil discoveries are expected after the peak oil of production is reached,[112] the new reserves of oil will be harder to find and extract. The Jack 2 field, for instance, is more than 20,000 feet (6,100 m) under the sea floor in 7,000 feet (2,100 m) of water, requiring 8.5 kilometers (5.3 mi) of pipe to reach. Additionally, even the maximum estimate of 15 billion barrels (2.4×10^9 m3) represents slightly less than 2 years of U.S. consumption at present levels.[113]

A proposed arctic wilderness zone would make off limits all exploration above and below the 65th parallels, the mean Arctic/Antarctic circles. There is about a 30 day to 3 year supply of oil north of the arctic circle. Environmentalists ask if it is worth the risk, as it does not fundamentally change the need to stop using oil.[114]

Control over supply

Entities such as governments or cartels can reduce supply to the world market by limiting access to the supply through nationalizing oil, cutting back on production, limiting drilling rights, imposing taxes, etc. International sanctions, corruption, and military conflicts can also reduce supply.

Nationalization of oil supplies

Another factor affecting global oil supply is the nationalization of oil reserves by producing nations. The nationalization of oil occurs as countries begin to deprivatize oil production and withhold exports. Kate Dourian, Platts' Middle East editor, points out that while estimates of oil reserves may vary, politics have now entered the equation of oil supply. "Some countries are becoming off limits. Major oil companies operating in Venezuela find themselves in a difficult position because of the growing nationalization of that resource. These countries are now reluctant to share their reserves."[115]

According to consulting firm PFC Energy, only 7% of the world's estimated oil and gas reserves are in countries that allow companies like ExxonMobil free rein. Fully 65% are in the hands of state-owned companies such as Saudi Aramco, with the rest in countries such as Russia and Venezuela, where access by Western European and North American companies is difficult. The PFC study implies political factors are limiting capacity increases in Mexico, Venezuela, Iran, Iraq, Kuwait, and Russia. Saudi Arabia is also limiting capacity expansion, but because of a self-imposed cap, unlike the other countries.[116] As a result of not having access to countries amenable to oil exploration, ExxonMobil is not making nearly the investment in finding new oil that it did in 1981.[117]

Cartel influence on supply

OPEC is an alliance between 12 diverse oil producing countries (Algeria, Angola, Ecuador, Iran, Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia, the United Arab Emirates, and Venezuela) to control the supply of oil. OPEC's power was consolidated as various countries nationalized their oil holdings, and wrested decision-making away from the "Seven Sisters," (Anglo-Iranian, Socony-Vacuum, Royal Dutch Shell, Gulf, Esso, Texaco, and Socal) and created their own oil companies to control the oil. OPEC tries to influence prices by restricting production. It does this by allocating each member country a quota for production. All 12 members agree to keep prices high by producing at lower levels than they otherwise would. There is no way to verify adherence to the quota, so every member faces the same incentive to ‘cheat’ the cartel.[118] Washington kept the oil flowing and gained favorable OPEC policies mainly by arming, and propping up Saudi regimes. According to some, the purpose for the second Iraq war is to break the back of OPEC and return control of the oil fields to western oil companies.[119]

Alternately, commodities trader Raymond Learsy, author of Over a Barrel: Breaking the Middle East Oil Cartel, contends that OPEC has trained consumers to believe that oil is a much more finite resource than it is. To back his argument, he points to past false alarms and apparent collaboration.[71] He also believes that peak oil analysts are conspiring with OPEC and the oil companies to create a "fabricated drama of peak oil" to drive up oil prices and profits. It is worth noting oil had risen to a little over $30/barrel at that time. A counter-argument was given in the Huffington Post after he and Steve Andrews, co-founder of ASPO, debated on CNBC in June 2007.[120]

See also


Energy policy



Further information


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  1. A list of over 20 published articles and books from government and journal sources supporting this thesis have been compiled at Dieoff.org in the section "Food, Land, Water, and Population."


  1. "peak oil definition from Financial Times Lexicon". Financial Times Lexicon. 2012. http://lexicon.ft.com/Term?term=peak-oil. Retrieved May 21, 2012.
  2. Campbell, Colin J (2012). "Understanding Peak Oil". The Association for the Study of Peak Oil and Gas. http://www.peakoil.net/about-peak-oil. Retrieved May 21, 2012.
  3. Energy Information Administration United States Federal Government
  4. International Energy Statistics
  5. The energy agriculture connect, pp.36-38. Retrieved 18 Feb 2012, by Nicol-André Berdellé, 4 February 2012
  6. Real energy and agriculture, original document. Retrieved 18 Feb 2012, by Nicol-André Berdellé, 16 October 2011
  7. Hubbert, Marion King (June 1956). "Nuclear Energy and the Fossil Fuels 'Drilling and Production Practice'" (PDF). Spring Meeting of the Southern District. Division of Production. American Petroleum Institute. San Antonio, Texas: Shell Development Company. pp. 22–27. http://www.hubbertpeak.com/hubbert/1956/1956.pdf. Retrieved 18 pril 2008.
  8. Script error
  9. "CERA says peak oil theory is faulty". Energy Bulletin (Cambridge Energy Research Associates (CERA)). 14 November 2006. Archived from the original on 22 June 2008. http://web.archive.org/web/20080622222111/http://www.energybulletin.net/22381.html. Retrieved 27 July 2008.
  10. 10.0 10.1 Deffeyes, Kenneth S (19 January 2007). "Current Events - Join us as we watch the crisis unfolding". Princeton University: Beyond Oil. http://www.princeton.edu/hubbert/current-events.html. Retrieved 27 July 2008.
  11. 11.0 11.1 11.2 11.3 11.4 11.5 Script error
  12. 12.0 12.1 12.2 12.3 Cohen, Dave (31 October 2007). "The Perfect Storm". Association for the Study of Peak Oil and Gas. http://www.aspo-usa.com/archives/index.php?option=com_content&task=view&id=243&Itemid=91. Retrieved 27 July 2008.
  13. 13.0 13.1 Kjell Aleklett, Mikael Höök, Kristofer Jakobsson, Michael Lardelli, Simon Snowden, Bengt Söderbergh (9 November 2009). "The Peak of the Oil Age". Energy Policy. Archived from the original on 2011-07-26. http://web.archive.org/web/20110726171422/http://www.tsl.uu.se/uhdsg/Publications/PeakOilAge.pdf. Retrieved 15 November 2009.
  14. 14.0 14.1 Script error
  15. 15.0 15.1 15.2 Script error
  16. Rudolf, John Collins (November 14, 2010). "Is ‘Peak Oil’ Behind Us?". The New York Times. http://green.blogs.nytimes.com/2010/11/14/is-peak-oil-behind-us/?partner=rss&emc=rss.
  17. "Has the World Already Passed “Peak Oil”? ". National Geographic News. November 9, 2010
  18. Bruno, Joe Bel (8 March 2008). "Oil Rally May Be Economy's Undoing". USA Today. Associated Press. http://www.usatoday.com/money/economy/2008-03-08-3190491488_x.htm. Retrieved 11 July 2009.
  19. BP, Statistical Review of World Energy 2010
  20. "World oil demand 'to rise by 37%'". BBC News. 20 June 2006. http://news.bbc.co.uk/2/hi/business/5099400.stm. Retrieved 25 August 2008.
  21. Script error
  22. International Energy Outlook 2009
  23. Script error
  24. "Global Oil Consumption". United States Energy Information Administration. http://www.eia.doe.gov/pub/oil_gas/petroleum/analysis_publications/oil_market_basics/demand_text.htm#Global%20Oil%20Consumption. Retrieved 27 July 2008.
  25. Wood, John H.; Long, Gary R.; Morehouse, David F. (18 August 2004). "Long-Term World Oil Supply Scenarios: The Future Is Neither as Bleak or Rosy as Some Assert". United States Energy Information Administration. http://www.eia.doe.gov/pub/oil_gas/petroleum/feature_articles/2004/worldoilsupply/oilsupply04.html. Retrieved 27 July 2008.
  26. "Domestic Demand for Refined Petroleum Products by Sector". United States Bureau of Transportation Statistics. http://www.bts.gov/publications/national_transportation_statistics/html/table_04_03.html. Retrieved 20 December 2007.
  27. 27.0 27.1 "International Petroleum (Oil) Consumption Data". United States Energy Information Administration. http://www.eia.doe.gov/emeu/international/oilconsumption.html. Retrieved 20 December 2007.
  28. 28.0 28.1 Script error
  29. "Oil price 'may hit $200 a barrel'". BBC News. 7 May 2008. http://news.bbc.co.uk/2/hi/business/7387203.stm. Retrieved 11 July 2009.
  30. Mcdonald, Joe (21 April 2008). "Gas guzzlers a hit in China, where car sales are booming". USA Today. Associated Press. http://www.usatoday.com/money/economy/2008-04-21-2494500625_x.htm. Retrieved 11 July 2009.
  31. O'Brien, Kevin (2 July 2008). "China's Negative Economic Outlook". Seeking Alpha. http://seekingalpha.com/article/83459-china-s-negative-economic-outlook. Retrieved 27 July 2008.
  32. "China and India: A Rage for Oil". Business Week. 25 August 2005. http://www.businessweek.com/stories/2005-09-04/china-and-india-a-rage-for-oil. Retrieved 27 July 2008.
  33. Goldstein, Steve (26 January 2009). "IEA sees first two-year oil demand fall in 26 years". The Wall Street Journal. http://www.marketwatch.com/news/story/iea-forecasts-first-two-year-oil/story.aspx?guid={046FC369-8971-4669-A3E2-F94414A8DA60}. Retrieved 11 July 2009.
  34. Gold, Russell; Campoy, Ana (13 April 2009). "Oil Industry Braces for Drop in U.S. Thirst for Gasoline". The Wall Street Journal. http://online.wsj.com/article/SB123957686061311925.html. Retrieved 21 April 2009.
  35. Associated Press (21 December 2010). "US Gas Demand on Long-Term Decline After Hitting ’06 Peak". Jakarta Globe. http://www.thejakartaglobe.com/naturalresources/us-gas-demand-on-long-term-decline-after-hitting-06-peak/412956. Retrieved 10 January 2011.
  36. Alexander Kwiatkowski (11 February 2010). "IEA Raises 2010 Oil Demand Estimate on Recovery, Asia". Bloomberg News. http://www.bloomberg.com/apps/news?pid=20601207&sid=apjXWXtwrjuE.
  37. Baizhen Chua (4 February 2010). "China May Renew Record for Crude Oil Imports in 2010". Bloomberg.com. http://www.bloomberg.com/apps/news?pid=20601207&sid=aHHwv15vY_Do.
  38. 38.0 38.1 Script error
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  40. Savinar, Matt. "Are We 'Running Out'? I Thought There Was 40 Years of the Stuff Left". Life After the Oil Crash. http://www.lifeaftertheoilcrash.net/. Retrieved 20 December 2007.
  41. Mieszkowski, Katharine (22 March 2006). "The oil is going, the oil is going!". Salon.com (Salon Media Group). http://www.salon.com/news/feature/2006/03/22/peakoil/. Retrieved 8 March 2008.
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  43. 43.0 43.1 43.2 43.3 "International Petroleum (Oil) Production Data". United States Energy Information Administration. http://www.eia.doe.gov/emeu/international/oilproduction.html. Retrieved 31 March 2008.
  44. "The World Factbook". United States Central Intelligence Agency. 20 March 2008. https://www.cia.gov/library/publications/the-world-factbook/geos/xx.html. Retrieved 31 March 2008.
  45. Script error
  46. Goodchild, Peter (29 October 2007). "Peak Oil And Famine:Four Billion Deaths". Countercurrents. http://www.countercurrents.org/goodchild291007.htm. Retrieved 21 August 2008.
  47. Pfeiffer, Dale Allen (2004). "Eating Fossil Fuels". From The Wilderness Publications. http://www.fromthewilderness.com/free/ww3/100303_eating_oil.html. Retrieved 21 August 2008.
  48. P. Crabbè, North Atlantic Treaty Organization. Scientific Affairs Division (2000). "Implementing ecological integrity: restoring regional and global environmental and human health". Springer. p.411. ISBN 0-7923-6351-5
  49. Script error
  50. Hirsch, Tim (24 December 2001). "Iceland launches energy revolution". BBC News. http://news.bbc.co.uk/2/hi/science/nature/1727312.stm. Retrieved 23 March 2008.
  51. M. Nicolas Firzli & Vincent Bazi (Q3 2012). "The Drivers of Pension & SWF Investment in Energy- Focusing on Natural Gas". Revue Analyse Financière, volume 44, pp. 41-43 (.). http://worldpensions.org/uploads/Pension___SWF_Investment_in_Energy___Revue_Analyse___July_2012.pdf. Retrieved 7 July 2012.
  52. "IEA's Oil Market Report, 13 December 2011" (Press release). IEA. 13 December 2011. http://omrpublic.iea.org/. Retrieved 15 January 2012.
  53. 53.0 53.1 53.2 Donnelly, John (11 December 2005). "Price rise and new deep-water technology opened up offshore drilling". The Boston Globe. http://www.boston.com/news/world/articles/2005/12/11/price_rise_and_new_deep_water_technology_opened_up_offshore_drilling/. Retrieved 21 August 2008.
  54. "The Next Crisis: Prepare for Peak Oil". The Wall Street Journal. February 11, 2010.
  55. Campbell, C. J. (December 2000). "Peak Oil Presentation at the Technical University of Clausthal". energycrisis.org. http://energycrisis.org/de/lecture.html. Retrieved 21 August 2008.
  56. Script error
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  58. Christopher Johnson (11 February 2010). "Oil exploration costs rocket as risks rise". Reuters. http://www.reuters.com/article/idUSTRE61A28X20100211. Retrieved 9 September 2010.
  59. Webber, John (2007-9). "UK Oil Reserves and Estimated Ultimate Recovery 2007". Department of Energy and Climate Change. https://www.og.decc.gov.uk/information/bb_updates/chapters/Table4_3.htm. Retrieved 11 July 2009.
  60. Herbert, Jozef (16 July 2007). "Oil industry report says demand to outpace crude oil production". Associated Press. BLNZ. http://www.blnz.com/news/2007/07/16/Study_Demand_outpace_crude_supply_pply.html. Retrieved 11 July 2009.
  61. 61.0 61.1 61.2 61.3 61.4 Maass Peter (21 August 2005). "The Breaking Point". New York Times. http://www.nytimes.com/2005/08/21/magazine/21OIL.html. Retrieved 26 August 2008.
  62. "Briefing: Exxon increases budget for oil exploration". International Herald Tribune. 7 March 2007. http://www.nytimes.com/2007/03/07/business/worldbusiness/07iht-ibrief.4834735.html. Retrieved 26 August 2008.
  63. "Shell plans huge spending increase". International Herald Tribune. 14 December 2005. http://www.nytimes.com/2005/12/14/business/worldbusiness/14iht-shell.html. Retrieved 26 August 2008.
  64. Boxell, James (10 October 2004). "Top Oil Groups Fail to Recoup Exploration". The New York Times (Energy Bulletin). Archived from the original on 21 May 2008. http://web.archive.org/web/20080521144405/http://www.energybulletin.net/2470.html. Retrieved 26 August 2008.
  65. Gerth, Jeff (24 February 2004). "Forecast of Rising Oil Demand Challenges Tired Saudi Fields". The New York Times. Archived from the original on 9 March 2008. http://web.archive.org/web/20080309103717/http://www.nytimes.com/2004/02/24/business/24OIL.html. Retrieved 26 August 2008.
  66. Morsfeld, Carl (10 October 2004). "How Shell blew a hole in a 100-year reputation". The Times. http://business.timesonline.co.uk/tol/business/article991863.ece. Retrieved 26 August 2008location=London.
  67. Darwish, Badrya (16 June 2008). "What lies beneath?". Kuwait Times. http://www.kuwaittimes.net/read_news.php?newsid=MjM0ODI5MzU=. Retrieved 26 August 2008.
  68. Javed, Ali (1 December 2000). "The Economic and Environmental Impact of the Gulf War on Kuwait and the Persian Gulf". American University Trade and Environment Database. http://www.american.edu/TED/kuwait.htm. Retrieved 18 November 2007.
  69. Palast, Greg (23 May 2006). "No Peaking: The Hubbert Humbug". Guerrilla News Network. http://www.gregpalast.com/madhouse/index.php/32. Retrieved 14 July 2010.
  70. Heinberg, Richard (July 2006). "An Open Letter to Greg Palast on Peak Oil". http://heinberg.wordpress.com/2006/07/01/171-an-open-letter-to-greg-palast-on-peak-oil/. Retrieved 14 July 2010.
  71. 71.0 71.1 Learsy, Raymond J. (4 December 2003). "OPEC Follies - Breaking point". National Review. Archived from the original on 29 June 2008. http://web.archive.org/web/20080629004635/http://www.nationalreview.com/comment/learsy200312040900.asp. Retrieved 26 August 2008.
  72. 72.0 72.1 Macalister, Terry (10 November 2009). "Whistleblower: key oil figures were distorted by US pressure". The Guardian (London): pp. 1–2. http://www.guardian.co.uk/environment/2009/nov/09/peak-oil-international-energy-agency. Retrieved 11 November 2009.
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  75. Duarte, Joe (28 March 2006). "Canadian Tar Sands: The Good, the Bad, and the Ugly". RigZone. http://www.rigzone.com/news/article.asp?a_id=30703. Retrieved 11 July 2009.
  76. "Environmental Challenges of Heavy Crude Oils". Battelle Memorial Institute. 2003. http://www.battelle.org/Environment/publications/envupdates/Fall2003/article9.stm. Retrieved 11 July 2009.
  77. Sexton, Matt (2003). "Tar Sands: A brief overview". http://ffden-2.phys.uaf.edu/102spring2002_Web_projects/M.Sexton/. Retrieved 11 July 2009.
  78. Script error
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  80. Evans, Jon.
    Sand banks: If unconventional sources of oil, such as oil sands, could be transformed into crude we could still have a 300-year supply left. The problem is extracting it.
    Chemistry and Industry 6 November 2006: 18-36. Gale Gerneral OneFile. Web. 5 October 2009. <http://find.galegroup.com>.
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  82. Script error
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  85. Wood, Tim (5 November 2005). "Oil Doomsday is Nigh, Tar Sands Not a Substitute". Resource Investor. http://www.resourceinvestor.com/News/2005/5/Pages/Oil-Doomsday-is-Nigh--Tar-Sands-Not-a-Substitute.aspx. Retrieved 11 July 2009.
  86. Script error
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  89. Hoyos, Carola (18 February 2007). "Study sees harmful hunt for extra oil". Financial Times. http://www.ft.com/cms/s/0/11ba213e-bf7e-11db-9ac2-000b5df10621.html. Retrieved 11 July 2009.
  90. Script error
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  92. Green Freedom: A Concept for Producing Carbon Neutral Synthetic Fuels and Chemicals, Los Alamos National Laboratory, by F. Jeffrey Martin and William L. Kubic, 2007
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  96. Monbiot, George (15 December 2008). "When will the oil run out?". London: The Guardian. http://www.guardian.co.uk/business/2008/dec/15/oil-peak-energy-iea. Retrieved 28 July 2009.
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  103. Aleklett, Kjell (2006). "Review: CERA's report is over-optimistic" (DOC). Association for the Study of Peak Oil and Gas. http://www.peakoil.net/Aleklett/Review_CERA_report_20060808.doc. Retrieved 29 July 2009.
  104. Script error
  105. "Canales: Output will drop at Cantarell field". El Universal. 10 February 2006. http://classic-web.archive.org/web/20080601064106/http://www.eluniversal.com.mx/miami/vi_16934.html. Retrieved 28 July 2009.
  106. Script error[dead link]
  107. Arai, Adriana (1 August 2006). "Mexico's Largest Oil Field Output Falls to 4-Year Low". Bloomberg. http://www.bloomberg.com/apps/news?pid=20601086&sid=aGLn091nIGio. Retrieved 28 July 2009.
  108. Script error
  109. "OPEC Summit Roundup Production hike prospects fade as Abu Dhabi summit looms". Forbes. 18 November 2007. http://www.abcmoney.co.uk/news/182007167301.htm. Retrieved 29 July 2009.
  110. "Chevron Announces Record Setting Well Test at Jack" (Press release). Chevron. 5 September 2006. http://www.chevron.com/news/press/Release/?id=2006-09-05. Retrieved 29 July 2009.
  111. Mufson, Steven (6 September 2006). "U.S. Oil Reserves Get a Big Boost". The Washington Post. http://www.washingtonpost.com/wp-dyn/content/article/2006/09/05/AR2006090500275.html. Retrieved 29 July 2009.
  112. Geyer Greg (19 September 2006). "Jack-2 Test Well Behind The Hype". Association for the Study of Peak Oil and Gas. Archived from the original on 21 January 2008. http://web.archive.org/web/20080121115753/http://aspo-usa.com/index.php?option=com_content&task=view&id=52&Itemid=76. Retrieved 29 July 2009.
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  114. Drilling in the Arctic Ocean- Not Worth the Risk
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  116. McNulty Sheila (9 May 2007). "Politics of oil seen as threat to supplies". Financial Times. http://www.ft.com/cms/s/dd44e336-fe6a-11db-bdc7-000b5df10621.html.
  117. Fox Justin (31 May 2007). "No More Gushers for ExxonMobil". Time magazine. http://www.time.com/time/magazine/article/0,9171,1626994,00.html.
  118. Gaurav Sodhi (24 June 2008). "The myth of OPEC". Australian Financial Review. http://www.cis.org.au/media-information/opinion-pieces/article/302-the-myth-of-opec. Retrieved 21 August 2008.
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