2001
Both Reliance and Reliance Petroleum Ltd. achieve the status of India's two largest companies in terms of all major financial parameters. In 2001-02, Reliance Petroleum is merged with Reliance Industries.
2002
In one of the largest gas discoveries in the world, Reliance discovers gas deposits at the Krishna Godavari basin, which is a first for a private sector company in India.
The in-place volume of natural gas is found to be in excess of 7 trillion cubic feet, equivalent to about 1.2 billion barrels of crude oil.
2002-03
Reliance purchases a majority stake in Indian Petrochemicals Corporation Ltd, India's second largest petrochemicals company, from the Indian government. It's later merged with RIL in 2008.