New Delhi, April 9 (Inditop.com) Mukesh Ambani-promoted Reliance Industries Ltd (RIL) Friday said it has signed a $1.7 billion joint venture agreement with US-based Atlas Energy Inc for extracting shale gas in America.

Reliance will acquire a 40 percent “undivided interest” in about 300,000 net acres of undeveloped leasehold held by Atlas in the core area of the Marcellus Shale in Pennsylvania, the company said in a statement.

Reliance will pay $339 million in cash upon closing and an additional $1.36 billion in the form of a drilling carry.

Atlas will serve as the development operator for the joint venture, the statement added.

The deal is likely to be closed by this month-end.

Shale gas is natural gas stored in organic, sedimentary rocks. It is considered an unconventional source of energy.