What types of products are the various compounds of petroleum separated into during the refining process and on what physical property is this separation based?
What are petrochemicals and what are some examples of them?
What is a "trap"?
What is a "cap rock"?
Why are a trap and cap rock necessary in the formation of oil and gas deposits?
What are the characteristics of a of rock that makes a good cap rock?
In what form does trapped oil usually exist?
Generally, how are oil reserves distributed around the world?
What percentage of the world's oil reserves are located in the US?
Which region of the world contains the majority of the world's oil reserves?
At current and projected use rates, approximately how long will the known world oil reserves last?
How abundant is oil relative to the other fossil fuels?
What is the general distribution of known US oil reserves?
At current and projected use rates, approximately how long will the known US oil reserves last?
What are the two methods by which production wells in an oil field recover oil?
How did the percent of the world's energy needs that are met by oil change during the 20th century?
Approximately what percent of oil can be recovered by primary production methods?
Approximately, what percent of oil can be recovered by enhanced recovery methods?
What types of environmental problems can be caused by the combustion of oil?
Approximately how much carbon dioxide is released for every gallon of gasoline burned in an automobile?
What is acid deposition and how does the combustion of oil contribute to it?
What types of environmental problems can be caused by the production and transport and oil?
What is conventional natural gas?
What in unconventional natural gas?
Generally, how are natural gas reserves distributed around the world?
What percentage of the world's natural gas reserves are located in the US?
At current and projected use rates, approximately how long will the known world natural gas reserves last?
How abundant is natural gas relative to the other fossil fuels?
What is the general distribution of known US natural gas reserves?
At current and projected use rates, approximately how long will the known US natural gas reserves last?
What is natural gas used for?
Approximately what percent of the world's energy needs are met by natural gas?
How did the percent of the world's energy needs that are met by natural gas change during the 20th century?
What is cogeneration?
What is liquefied petroleum gas?
What is liquefied natural gas?
What environmental problems are associated with the use of natural as?
How do the emissions that result from the combustion of natural gas compare to those resulting from the combustion of coal or oil?
What environmental problems are associated with the extraction and transport of natural gas?