Petreco S.A.R.L., a subsidiary of Scotland-based Melrose Resources Plc., will invest more than $65 M in the commercial development of Bulgaria`s Galata gas field. Luxembourg-based Petreco and its daughter firm Petreco Bulgaria signed a 25-year concession agreement with Bulgaria`s State Energy Agency and will start development as soon as they seal sales contracts with local consumers. This year`s gas consumption in BG is estimated at 3.6 B cubic meters. Texaco Inc. and Enterprise Oil discovered the Galata deposit in 1993.