Introduction
Crude oil prices behave much as any other commodity with wide price swings in times of shortage or oversupply. The crude oil price cycle may extend over several years responding to changes in demand as well as OPEC and non-OPEC supply.
The U.S. petroleum industry's price has been heavily regulated through production or price controls throughout much of the twentieth century. In the post World War II era U.S. oil prices at the wellhead averaged $24.20 per barrel adjusted for inflation to 2006 dollars. In the absence of price controls the U.S. price would have tracked the world price averaging $26.16. Over the same post war period the median for the domestic and the adjusted world price of crude oil was $18.53 in 2006 prices. That means that only fifty percent of the time from 1947 to 2006 have oil prices exceeded $18.53 per barrel. (See note in box on right.)
Until the March 28, 2000 adoption of the $22-$28 price band for the OPEC basket of crude, oil prices only exceeded $24.00 per barrel in response to war or conflict in the Middle East. With limited spare production capacity OPEC abandoned its price band in 2005 and was powerless to stem a surge in oil prices which was reminiscent of the late 1970s.
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| *World Price - The only very long term price series that exists is the U.S. average wellhead or first purchase price of crude. When discussing long-term price behavior this presents a problem since the U.S. imposed price controls on domestic production from late 1973 to January 1981. In order to present a consistent series and also reflect the difference between international prices and U.S. prices we created a world oil price series that was consistent with the U.S. wellhead price adjusting the wellhead price by adding the difference between the refiners acquisition price of imported crude and the refiners average acquisition price of domestic crude. |
The very long term view is much the same. Since 1869 US crude oil prices adjusted for inflation have averaged $21.05 per barrel in 2006 dollars compared to $21.66 for world oil prices.
Fifty percent of the time prices U.S. and world prices were below the median oil price of $16.71 per barrel.
If long term history is a guide, those in the upstream segment of the crude oil industry should structure their business to be able to operate with a profit, below $16.71 per barrel half of the time. The very long term data and the post World War II data suggest a "normal" price far below the current price. Pre Embargo Period Crude Oil prices ranged between $2.50 and $3.00 from 1948 through the end of the 1960s. The price oil rose from $2.50 in 1948 to about $3.00 in 1957. When viewed in 2006 dollars an entirely different story emerges with crude oil prices fluctuating between $17 - $18 during the same period. The apparent 20% price increase just kept up with inflation. From 1958 to 1970 prices were stable at about $3.00 per barrel, but in real terms the price of crude oil declined from above $17 to below $14 per barrel. The decline in the price of crude when adjusted for inflation was amplified for the international producer in 1971 and 1972 by the weakness of the US dollar. OPEC was formed in 1960 with five founding members Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. Two of the representatives at the initial meetings had studied the the Texas Railroad Commission's methods of influencing price through limitations on production. By the end of 1971 six other nations had joined the group: Qatar, Indonesia, Libya, United Arab Emirates, Algeria and Nigeria. From the foundation of the Organization of Petroleum Exporting Countries through 1972 member countries experienced steady decline in the purchasing power of a barrel of oil. Throughout the post war period exporting countries found increasing demand for their crude oil but a 40% decline in the purchasing power of a barrel of oil. In March 1971, the balance of power shifted. That month the Texas Railroad Commission set proration at 100 percent for the first time. This meant that Texas producers were no longer limited in the amount of oil that they could produce. More importantly, it meant that the power to control crude oil prices shifted from the United States (Texas, Oklahoma and Louisiana) to OPEC. Another way to say it is that there was no more spare capacity and therefore no tool to put an upper limit on prices. A little over two years later OPEC would, through the unintended consequence of war, get a glimpse at the extent of its power to influence prices. Middle East Supply Interruptions Yom Kippur War - Arab Oil Embargo In 1972 the price of crude oil was about $3.00 per barrel and by the end of 1974 the price of oil had quadrupled to over $12.00. The Yom Kippur War started with an attack on Israel by Syria and Egypt on October 5, 1973. The United States and many countries in the western world showed support for Israel. As a result of this support several Arab exporting nations imposed an embargo on the countries supporting Israel. While Arab nations curtailed production by 5 million barrels per day (MMBPD) about 1 MMBPD was made up by increased production in other countries. The net loss of 4 MMBPD extended through March of 1974 and represented 7 percent of the free world production. If there was any doubt that the ability to control crude oil prices had passed from the United States to OPEC it was removed during the Arab Oil Embargo. The extreme sensitivity of prices to supply shortages became all too apparent when prices increased 400 percent in six short months. From 1974 to 1978 world crude oil prices were relatively flat ranging from $12.21 per barrel to $13.55 per barrel. When adjusted for inflation the price over that period of time world oil prices were in a period of moderate decline. Crises in Iran and Iraq Events in Iran and Iraq led to another round of crude oil price increases in 1979 and 1980. The Iranian revolution resulted in the loss of 2 to 2.5 million barrels per day of oil production between November, 1978 and June, 1979. At one point production almost halted. While the Iranian revolution was the proximate cause of what would be the highest prices in post-WWII history, its impact on prices would have been limited and of relatively short duration had it not been for subsequent events. Shortly after the revolution production was up to 4 million barrels per day. Iran weakened by the revolution was invaded by Iraq in September, 1980. By November the combined production of both countries was only a million barrels per day and 6.5 million barrels per day less than a year before. As a consequence worldwide crude oil production was 10 percent lower than in 1979. The combination of the Iranian revolution and the Iraq-Iran War cause crude oil prices to more than double increasing from from $14 in 1978 to $35 per barrel in 1981. Twenty-six years later Iran's production is only two-thirds of the level reached under the government of Reza Pahlavi, the former Shah of Iran. Iraq's production remains about 1.5 million barrels below its peak before the Iraq-Iran War.
Crude Oil Prices 1869-2007
Click on graph for larger viewCrude Oil Prices 1869-2007
Click on graph for larger viewThe results are dramatically different if only post-1970 data are used. In that case U.S. crude oil prices average $29.06 per barrel and the more relevant world oil price averages $32.23 per barrel. The median oil price for that time period is $26.50 per barrel.
If oil prices revert to the mean this period is likely the most appropriate for today's analyst. It follows the peak in U.S. oil production eliminating the effects of the Texas Railroad Commission and is a period when the Seven Sisters were no longer able to dominate oil production and prices. It is an era of far more influence by OPEC oil producers than they had in the past. As we will see in the details below influence over oil prices is not equivalent to control.
Post World War IIWorld Events and Crude Oil Prices 1947-1973
Click on graph for larger viewMiddle East, OPEC and Oil Prices 1947-1973
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U.S. and World Events and Oil Prices 1973-1981
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OPEC Oil Production 1973-2007
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Iraq Oil production 1973-2007