KIEV, Aug. 18 - Ukrgazvydobuvannia, without increasing investment, will annually reduce gas production by up to one billion cubic meters (bcm), Oleh Prokhorenko, chairman of the country's largest gas producing company, said in an exclusive interview with Interfax-Ukraine.

According to Prokhorenko, most of the company's wells were drilled during the Soviet era and therefore are constantly losing money and performance.