What are the two key concepts for this section? What is crude oil (petroleum) and how are oil deposits detected and removed? What percentages of the commercial energy used in the world and in the...

What are the two key concepts for this section? What is crude oil (petroleum) and how are oil deposits detected and removed? What percentages of the commercial energy used in the world and in the United States are provided by conventional crude oil? What is peak production for an oil well or oil field? What is refining? What are petrochemicals and why are they important?