There is blood on many hands, it starts on the steps of City Hall, in the office of the mayor. Pedro Paulo: Nothing is behind schedule when it comes to the Rio de Janeiro Olympics, city hall has prepared to host the Games from an economic and fiscal point of view.
Quick Answer. Petroleum is found in conventional oil fields, such as those in Texas, Saudi Arabia and the North Sea. Petroleum is also found in oil shale deposits, such as the Bakken formation in North Dakota.
There are three basic categories of fossil fuels: coal, petroleum  (or crude oil), and natural gas     More on Fossil Fuels    Fossil fuel is a hydrocarbon deposit occurring within the Earth's  crust, such as petroleum, coal, or natural gas, which when burned  with oxygen produce energy.