Gas is extracted from wells under the sea using a drilling platform.
Worldwide gas production in 2014 was 3460.6 billion cubic metres (bcm) - enough to supply the entire UK population for almost 53 years*.
*based on 2014 average usage
The sector employs around 32,000 people to find and bring this gas to the surface, with over three times as many jobs supported through the supply chain.
The industry encompasses large companies such as ConocoPhillips, Shell and Centrica down to small companies running a single well to extract gas. Almost half of the gas used in the UK comes from wells in the seas around the British Isles.
For more information
The International Association of Oil & Gas Producers: http://www.iogp.org
Oil & Gas UK: http://www.oilandgasuk.co.uk