Most of the time it is found in association with petroleum.
The recoverable reserves of natural gas (as on 1st April, 2001) are estimated at 638 billion cubic metres.
But this quantity will increase as more and more reserves are discovered at eastern coast namely Krishna, Godavari and Mahanadi basins.
Production of natural gas in 2003-04 was about 31 billion cubic metres.
Gas Authority of India was established in the year 1984 with an aim for processing, transporting, distributing and marketing of natural gas.
The company owns and operates a network of over 5,340 km of natural gas pipeline in the country.