Cyprus said it has received expressions of interest from Eni, Total, Statoil, ExxonMobil and Qatar Petroleum in a licensing round for offshore hydrocarbon blocks.
Croatia has signed contracts with a local firm and one Canadian company that had been awarded onshore oil and gas exploration blocks in the north and east of the country.
The Oil and Gas Authority (OGA) is expected to confirm the remaining licences of the 28th offshore round today.
The final tally will bring a close to one of the most active bids in 50 years.
Mexico has successfully auctioned two of the first seven blocks made available in the first of its historic oil and gas tenders.
The North American country has opened up the industry, which had long been nationalised, for the first time since 1938.
Both of the contracts have been awarded to a consortium of Sierra Oil & Gas, Premoer Oil and Talos Energy.