By Wed Apr 07 2021 The Department of Petroleum Resources (DPR) has revoked four Oil Mining Licences (OML) belonging to Addax Petroleum citing non-development of the assets for several years. The affected licenses include OML 123, 124, 126 and 137. In a chat with journalists yesterday, the Director/Chief Executive Officer of DPR, Sarki Auwalu said the decision was taken in a bid to address production and revenue losses occasioned by the neglect of the assets. According to him, over 50 per cent of assets remain undeveloped after several years, contrary to the principle of Petroleum Act. Auwalu said: “OML 137 holds gas reserves of more than three trillion tcf, adding that reserves have remained flat over the years without any form of development.