Petro River Oil Corp. to discover and develop oil and gas reserves in proven oil and gas basins, announced the acquisition of an additional 5.63% interest in an international, offshore exploration project in the North Sea through Horizon Energy Acquisition, LLC, a newly-formed company of which the Company owns a 14.5455% membership interest and has a right to appoint one member to the three-member board of managers. The Company already holds an indirect 5.63% interest in the same assets through its investment in Horizon Energy Partners, LLC. The UK Project includes three (3) Seaward Production Licenses (P2300, P2329, and P2427, collectively, the"Licenses"), encompassing approximately 455,000 net acres with the potential of being awarded a fourth license adjacent to the Licenses comprising approximately 150,000 net acres. Horizon Energy is a sponsor of a new 3D seismic survey to be commenced in the second quarter of 2019 that will image a portion of the Licenses.