By Andrew Walker
Economics correspondent, BBC News
Ministers from major gas exporting countries are meeting in Doha, Qatar, amid speculation that they may be planning to set up a cartel.
Some major gas producers want to set up a cartel to control prices
The informal grouping, called the Gas Exporting Countries Forum, includes Russia, Iran and Kazakhstan.
Some of its leaders have expressed interest in forming a cartel similar to Opec to control production and price.
Gas accounts for about 20% of the fuel used globally for heating, cooking and generating electricity.
The forum is a rather informal grouping with a variable membership but it accounts for something like 70% of known reserves.
Officials in the European Union, which is becoming increasingly dependent on Russian gas, have expressed concern about the possibility of a cartel.
But many analysts are sceptical about whether it could work.
Most gas trade is through regional pipelines so there is not the same kind of global market that a cartel could seek to control as there is for oil, which is transported more by sea.
And there are long-term contracts for supplying gas - up to 30 years - which would also be a barrier to any attempt to cut production in order to push prices higher.