Feb 8 (Reuters) - Gran Tierra Energy Inc (GTE.TO), a Canadian oil and gas exploration company, said year-end total proved oil reserves rose 7 percent to about 23.6 million barrels of oil. Gran Tierra, which has assets in Colombia, Argentina and Peru, said total proved plus probable oil reserves were up 11 percent to about 31 million barrels of oil.
"In 2011, we are focused on continuing growing reserves through exploration drilling in Colombia, Peru and Brazil," the Calgary, Alberta-based company said in a statement.
In the fourth quarter, production averaged about 15,800 barrels of oil per day, net after royalties. (Reporting by Bhaswati Mukhopadhyay in Bangalore; Editing by Jarshad Kakkrakandy)