Chapter 7:
Future Trends in Energy Supplies

Oil supplies may not last forever. But oil will be available for use long beyond our children's lifetimes. While no one can accurately predict oil's relative supply and demand, even in the near future, several theorists have attempted to predict when and how the world will run out of oil. The most notable theorist on this subject is M. King Hubbert.

Project World Demand for Energy by Type
Chart courtesy of Earth Science World and Exxon-Mobil


Hubbert's Peak

Hubbert's Peak Hubbert started out in the 1950's claiming that oil is a naturally occurring resource which will not last forever - production will rise to a point that cannot be sustained and then die down to a point of total depletion. This, to most, seems a fairly obvious assumption. Understanding his theories, one can conclude that once Hubbert's Peak has been reached, half of the world's oil reserves will have been depleted. This is also the case for a field with several wells. When one takes what has already been produced from the field and what can potentially be produced for the field combined this number becomes its ultimate potential. Its peak in production would be placed at the ultimate divided by two. The only way to precisely determine the ultimate for the world's oil reserves is to count them when they have been depleted

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The problem with determining the peak in world production is one must use estimates to determine ultimate world production. There are three main numbers or concepts used to do this: 1) cumulative production or what is known as reserved production; 2) knowable, undiscovered production; or 3) what is predictable from past trends. From these concepts, we can estimate that ultimate equals cumulative production plus reserved production plus undiscovered production. However, due to each country's different analysis for total production of oil and gas, determining the ultimate world oil production is relatively impossible. A Dr. C.J. Campbell took the time to understand how each country counts its oil and gas production and predicted that the ultimate world recovery is 1.8 trillion barrels of oil.

Projected US Oil Production
Chart courtesy of Earth Science World and Exxon-Mobil



Each country will have its peak. Hubbert predicted that the United States would reach its peak in the 1970's and it appeared to do so. The country was depending on Texas for the bulk of its oil and when the Texas Railroad Commission announced in 1971 that Texas was at 100 percent production. That is when the Organization of Petroleum Exporting Countries (OPEC) was created to control the supply of oil and gas for the world market and drove the Texas oil industry into the ground for a few years.

Hubbert suggested that it will take many years to completely deplete the world's supply of oil. However, he also suggested that each country will have its peak and then experience decreasing production from there. We are already seeing that some Middle Eastern countries may be peaking today with their production approaching 100 percent of capacity. So, what does this mean for our industries? Cheap oil production in the Middle East will likely be a thing of the past in the next 10 to 20 years, sparking a feverous interest in alternative fuels.



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While there is no denying that there is a finite amount of oil and gas on this planet, new technologies and recovery methods continue to increase the percentage of an existing field's recoverable oil and gas. At the same time, while the rate of discovery of new fields declines, we are getting better at finding them by digging deeper and in more isolated areas. Who's to say there will not be yet more advances that once again tip the scales in favor of more supply than demand?

Alternative Energy Sources

A theorist by the name of Walter Yongquist exposed several myths surrounding alternative energy sources. The first myth states that alternative energy sources can readily replace oil. Yongquist asserts that this is simply not true. Every means of transportation including airplanes and cars is powered by carbon-based fuels. When carbon based fuel is no longer used, every airplane and car will need to be replaced and this will cost trillions of dollars to do. He states that 97 percent of the world's 600 millions cars are powered by gasoline or diesel fuel. That means that when the oil and gas is depleted, 582 million cars will have to be replaced by cars that run on alternative sources of energy. He also felt is was a myth to assume that alternative sources of energy can just be plugged into our present day economic system and our lifestyles will continue as usual. If we were to make better use of our most renewable source of energy, the sun, our current lifestyles would be impeded due to our modes of transportation being limited to necessity travel and not for recreational purposes as well. No longer would things look the way they do; however, each building and mode of transportation would have huge solar panels stretched across it. He claims that changing forms of energy would drastically change our lifestyles and standards of living. A third myth is that alternative energy sources are environmentally benign. This simply is not true. For a liquid version of coal to be used, huge mining endeavors would be taken on to fulfill the world's necessity of coal. If plants were used in the form of biomass to fuel the world, the value of soil would be compromised. Each type of alternative fueling brings its own environmental problems. A final myth claims that using biomass types of fuel (plants) can be a lifesaver to a fuel crisis. This is not true due to the huge costs in converting plants to liquid fuel and the detriment this would create in replacement of fuel crops. We can already see this effect with corn prices doubling in 2006, as more and more corn is converted to ethanol.

While Yongquist may be correct in calling each of these premises myths, the equation will surely change if the price of oil skyrockets. Change is usually not an instantaneous process, but rather a gradual evolution that occurs over time.



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Types of Alternative Vehicular Fuel

One type of alternative fuel is biodiesel. Biodiesel is a diesel fuel replacement made from vegetable oils or animal fats. It contains methyl ester; so, most vehicles do not need to change engines to be able to use it. Claims are made that bio-diesel reduces carbon dioxide emissions by up to 80 percent and also reduces the black smoke associated with fuel combustion by up to 75 percent. It's claimed that using biodiesel eliminates the smell of smoke emission and further emits a smell of doughnuts or popcorn depending of the type of oil used in the fuel. It also is biodegradable and assists with the lubrication of engines and can be mixed with normal fuel. The only downside of this type of fuel is the amount of vegetable oils and animal fats needed to ensure enough fuel for all diesel vehicles in the country. Biodiesel can also soften rubbers overtime causing problems with plastic and rubber hoses contained in engines.

The second type of alternative fuel is ethanol, which is a clear, colorless liquid formed from distilling starchy crops such as barley, wheat and corn. This is a gasoline-like biofuel. Bioethanol is a form of ethanol produced from trees and grasses and can be used in the same ways that traditional ethanol is used. Ethanol can be used without many additional costs since it is nearly as cheaply produced than gasoline. Vehicles are not required to make extreme changes to be able to run on ethanol and it is better for the environment than petroleum emissions. Similarly to the biomass fuel, however, it is difficult to imagine how the additional quantity of crops that must be grown to satisfy potential demand. Clearly farmers could not keep up with demand if ethanol was only as the sole basis for vehicular fuel.

Indian Electric CarThe third type of alternative fuel is electricity which can be used for certain types of battery operated vehicles and also fits in the no combustion category. The only waste products of this type of vehicle are heat and water. The primary problem with this type of fuel (mainly generated from fossil fuels) is the limited battery charge meaning that cars can only travel a small distance without having to "plug up" and recharge their batteries. A vehicle of this type would have to be plugged into a source of electricity every night in order to run it during the day. Solar powered electrical cells can fuel a car that has panels fixed on the vehicle to collect sunlight. This type of transportation has not been sold commercially to date; however, solar powered machinery and homes will enjoy a greater share of the market as the price of oil and gas continues to increase. Most houses can be covered in solar panels and it will provide all the electricity needed except for the air conditioning.



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An external combustion type of vehicle would be one that was fueled by steam, coal or organic waste. However, coal can be used to produce gasoline or diesel The process is highly expensive and is not worth it to most countries due to a limited coal supply. Coal is dangerous to mine and it is also a fossil fuel which will eventually run out just as petroleum will. In World War II, when the Germans were cut off from the oil and gas industry through embargos, they used the country's rich supply of coal to produce gasoline for their vehicles. Steam power is also a version of the external combustion vehicle. The Stanley Steamer was created and it effectively used steam just like steam boats would to power the car. However, steam powered automobiles require a burner and are slow. Gasoline powered automobiles continue to be much more efficient.

In the end everything comes down to supply and demand. If the price of oil and gas continues to rise, say doubling, and doubling again, the economics of alternative fuels will improve, and mass production technology will be employed to make vehicles that can take advantage of them, perhaps as cheaply as the vehicles we buy today.










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