Colombia received bids from nearly a score of companies interested in 26 of the 95 oil and natural gas blocks on offer in a bidding round that will conclude next month, the National Hydrocarbons Agency, or ANH, said.
The ANH said a total of 19 companies lodged bids.
Five of the 14 offshore blocks on offer attracted interest from oil majors, which Colombian media said included U.S.-based Anadarko, as well as Spain's Repsol, Norway's Statoil and U.S.-based ExxonMobil, who bid jointly.
The Mines and Energy Ministry said crude production in Colombia averaged 1,008,000 barrels a day in June, up 6 percent from a month earlier.
Since 2010, companies in Colombia's mining and hydrocarbons sectors have paid around 37 trillion pesos (some $19.2 billion) in royalties, President Juan Manuel Santos said in May.
Separately, Colombian state-controlled oil company Ecopetrol said it will not adopt Canadian partner Pacific Rubiales' STAR technology, which is designed to enable more efficient recovery of heavy-crude reserves.
The companies said in a joint statement that they decided to end the STAR pilot project after analyzing the technical reports.
Pacific Rubiales had been seeking to use the technology to double the recovery of heavy-crude reserves at the Quifa field, located in the central province of Meta. EFE