Heritage Oil Plc is a Jersey-based independent oil and gas exploration and production company. It has producing assets in Nigeria and Russia, and exploration assets in Tanzania, Papua New Guinea, Malta, Libya and Pakistan. Activity on the exploration portfolio is focused on Tanzania and Papua New Guinea. It has four licenses in Papua New Guinea, which include Petroleum Prospecting Licence (PPL 319), Petroleum Retention Licence (PRL 13), PPL 337 and PPL 437. PPL 319 and PRL 13 licenses are located onshore and have gross areas of approximately 2,025 and 160 square kilometers. PPL 337 has a gross area of approximately 5,508 square kilometers. PPL 437 has a gross area of approximately 1,530 square kilometers. It has three blocks in Tanzania, which include Rukwa North, Rukwa South and Kyela. It also operates two blocks in Pakistan. Its OML 30 lies onshore within the Niger Delta. The license covers eight producing fields. As on 30 June, 2014, it acquired Energy Investments Global Ltd.