Essar Oil subsidiary, Essar Oil and Gas Exploration and Production (EOGEPL) has entered into a gas sale and purchase agreement (GSPA) with state-run GAIL for a 15-year term. GAIL won the bid for the contract floated by EOGEPL. The deal will help monetize EOGEPL’s complete CBM production from the Raniganj East block. The Essar subsidiary has already concluded drilling of 346 out of the 500 CBM wells.