This training provides an overview of the oil and natural gas industry, from the main types of deposits and wells to the different segments within the sector. This training also discusses some of the key methane emission sources in the oil and gas industry, available technologies to reduce emissions, and the positive outcomes of capturing and using methane. The training was developed by the U.S. Environmental Protection Agency (U.S. EPA) in support of voluntary activities to reduce methane emissions under the U.S. EPA’s Natural Gas STAR Program and the Global Methane Initiative (GMI).