Jadestone Energy Inc., formerly Mitra Energy Inc., is an oil and gas company that is engaged in exploration, appraisal and pre-development activities in the Philippines, Vietnam and Indonesia. The Company's Stag oilfield is located in the Western Australia. It operates Production Sharing Contracts (PSCs) in Vietnam, which include Blocks 05-1b & 1c PSC, covering an area of over 920 square kilometers in the Nam Con Son basin; Block 51 PSC, covering an area of over 2,900 square kilometers on the northeast margin of the Malay Basin; Block 46/07 PSC, which is located adjacent to Block 51; Block 45 PSC, which is situated adjacent to both Block 51 and Block 46/07; Block 127 PSC, which is located at the southern end of the Phu Khanh Basin, and Block MVHN/12KS PSC, which is located in the southeast of Hanoi. It holds interests in two Service Contracts (SCs) in Philippines, including Block SC 56 and Block SC 57. It holds interests in PSCs, such as Bone PSC and Sibaru PSC, in Indonesia.