Natural combustible gases

Natural combustible gases consist of methane, ethane, propane and butane, at them there are also carbon dioxide, nitrogen, hydrogen sulfide and. inert gases. Many fields of natural gases lying at a depth of 1,5 km consist almost of one methane (to 96... 97%) with small impurity of its homologs (ethane, propane, butane), nitrogen, argon, sometimes carbon dioxide and hydrogen sulfide. With depth the maintenance of homologs of methane usually grows.