Gas produced during the extraction or processing of petroleum, primarily consisting of methane and ethane; used as fuel or chemical raw material

An area containing deposits of both petroleum and natural gas

A well drilled for the extraction of crude oil and natural gas; includes production wells as well as injection wells used to pump water or gas into a reservoir

The ratio of the volume of natural gas produced to the volume of crude oil produced.

A colorless and flammable liquid fuel refined from crude oil or natural gas; commonly used for heating, cooking, or as vehicle fuel