Ukrtransgaz checked all border gas measuring stations, except of the Russian Sudzha.
In October, the company filed an application with the National Energy and Utilities Regulatory Commission for certification.
Turkey conducts unauthorized drilling in the territorial waters of Cyprus.
The Ukrainian company is trying to recover $2.56 billion from Gazprom in various jurisdictions for gas shortages.
The lawsuit concerns amendments to the EU Gas Directive.
The volume of oil refining at Kremenchuk refinery is 190-240 thousand tons/month this year.