Cuba on Tuesday announced plans to drill five deepwater oil wells in the Gulf of Mexico beginning this summer, expressing confidence that its efforts will be rewarded with major new energy finds.

"We're about to move to the drilling phase," said Manuel Marrero, an official with the government authority tasked with overseeing Cuba's oil sector.

"We're all really hopeful that we will be able to discover large reserves of oil and gas," said Marrero, who added that the ventures would be undertaken with the help of unspecified foreign companies.

He said the deepwater wells were to be drilled between 2011 and 2013, and would be in waters ranging in depth between 400 meters (a quarter mile) and 1,500 meters (1.6 miles). He did not specify which countries would be among the foreign partners working with Havana on the project.