ExplorationTotalEnergies and OMV Petrom win extension to explore in Black Sea offshore BulgariaBulgaria's energy minister agrees to two-year extension on Block 1-21 Han AsparuhSignature ceremony: Bulgarian Energy Minister Alexander Nikolov signs the extension agreement with representatives of TotalEnergies and OMV Petrom last weekPhoto: BULGARIA GOVERNMENTRob WattsLondon