PowerPoint ® Lecture prepared by Gary A. Beluzo FOSSIL FUELS The Lifeblood of the Global Economy 20
PowerPoint® Lecture prepared by Gary A. Beluzo
FOSSIL FUELS The Lifeblood of the Global Economy
20
Copyright © 2007 McGraw-Hill Publishing Company
STUDENT LEARNING OUTCOMES
• Compare and contrast the ways in which the US economy obtains and uses coal, oil, and natural gas.
• Compare and contrast the biological and geological processes that form coal, crude oil, and natural gas.
• Explain why at some point, global oil production will decline over time rather than simply disappear overnight.
• Describe why it is so difficult to estimate the quantity of oil that remains.
• Explain the costs and benefits of efforts to reduce US dependence on imported oil.
• Explain why crude prices tend to fluctuate and why they are so high now.
After reading this chapter, students will be able to
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Déjà vu- All Over Again
• 1973-1974 and 1979-1981 global reduction in oil production
• Cadillac's of the 1950s and 1960s no longer were a status symbol by the late 1970s
• 1986 price collapse reinitiated larger vehicles and lower gas mileage
• But higher prices are back
• Will SUVs suffer a similar fate?
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Past and Present Fossil Fuel Use• Conventional Fossil Fuels
• Coal, oil, and natural gas
• Nonconventional Fossil Fuels• Oil share and tar sands
• More expensive to produce
• May replace conventional fuels
• Coal
• Oil
• Natural Gas
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Changes in U.S. Energy Use
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Fossil Fuel Use by Sector
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Formation of Fossil Fuels• Millions of years ago
• Net primary production of autotrophs
• Large amounts of organic matter in small area
• Organic matter cut off from oxygen
• Rearranged to concentrate energy content
• “Geological accident”
• Fossil Fuel resource base represents less than century of primary production of terrestrial ecosystems
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Coal
• Derived from terrestrial plants millions of years ago
• Estuaries and swamps (mostly woody plants)
• C:H used to rank coals
• Anthracite (9:1)
• Bituminous
• Subbituminous
• Lignite
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Crude Oil and Natural Gas
• Derived from aquatic organisms, mainly plankton
• Shallow marine environments
• Sedimentation
• Kerogen (precursor of oil and natural gas)
• Trapped in sedimentary rocks (oil shale)
• Crude Oil
• Natural Gas
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Coal Mining Techniques
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Crude Oil and Natural Gas Extraction
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Secondary Oil Recovery
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Oil Refinery
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U.S. Natural Gas Pipelines
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U.S. Reserves to Production Ratio
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Yield per Effort of Oil Exploration
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Yield per Effort Explained
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When Will the World Run Out of Oil?
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Hubbert’s Logistic Curve
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Energy Return on Investment
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Net Energy Supply
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U.S. Oil Imports
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Economic Effects of Efforts to Increase Oil Production
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Oil Production from ANWR
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Remaining Supplies of Oil
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Oil Price Regimes
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Control Over Supply
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Changes in Supply and Demand