BG Group
In 2011, the British oil and gas firm entered into an initial agreement with India's state-owned Gujarat State Petroleum Corp to explore supplying as much as 2.5 million tonnes of LNG per year.
The Financial Times reported that BG will sign a final deal on Wednesday confirming the full value of the contract and the date of its commencement.
The deal could be worth $20 billion although the ultimate value would depend on the fluctuating price of LNG, FT said citing analysts.
BG could not be reached for comment outside normal working hours.