Energy major Reliance Industries said on Friday one of its units signed a deal with Colombian state oil firm Ecopetrol for two deepwater blocks in Colombia.

Under the deal, Ecopetrol will take a 20% stake in the Borojo North Block 42 and the Borojo South Block 43, which together cover an area of about 8,000 sq km in water depths ranging from 60-1,500m, Reliance said in a statement.

Reliance's unit will hold the rest of the stake in the blocks and will be their operator. The deal is subject to approval from Colombia's upstream regulator.