Gas flare
（重定向自Flare stack）
![Flare stack at the Shell Haven refinery in England.](/Images/godic/202501/13/Shell_haven_flare5315.jpg")
![North Dakota Flaring of Gas](/Images/godic/202501/13/North_Dakota_Flaring_of_Gas5315.JPG")
![Schematic flow diagram of an overall vertical, elevated flare stack system in an industrial plant.](/Images/godic/202501/13/FlareStack_System5315.png")
![Flaring of associated gas from an oil well site in Nigeria.](/Images/godic/202501/13/Niger_Delta_Gas-Flares5315.jpg")
A gas flare, alternatively known as a flare stack, is a gas combustion device used in industrial plants such as petroleum refineries, chemical plants, natural gas processing plants as well as at oil or gas production sites having oil wells, gas wells, offshore oil and gas rigs and landfills.