Gujarat Natural Resources Ltd is a BSE listed Indian company. The company, through its subsidiaries, engaged in the exploration and production of oil and gas properties in Gujarat, India. It holds 30% participating interest in six producing oil and gas fields in the Cambay Basin, Gujarat. Gujarat Natural Resources Ltd was incorporated in the year 1991. The company was formerly known as Lesha Energy Resources Limited and changed its name to Gujarat Natural Resources Limited in March 2010. Gujarat Natural Resources Limited is based in Ahmedabad, India. GNRL acquired Heramac through its acquisition of Sigma Oil and Gas Pvt. Ltd (SOGPL) in June 2009. Heramec holds stakes in 6 early stage production and 2 exploration assets in the Cambay basin.