"The Ika B-1R-DIR well was successfully connected to the existing INA production system in the northern Adriatic, ensuring the supply of an additional 150,000 cubic meters of natural gas per day into the Croatian gas system," the company said in a filing to the Zagreb bourse.

The annual production of the new well will amount to nearly 55 million cubic meters, (mcm) which currently represents around 7% of INA's total offshore and onshore gas production.