Gran Tierra Energy Announces Oil Discovery in Peru

Initial Results Indicate 99 feet of Gross Oil Column in Bretaña Norte Exploration Well in Peru; Moqueta-8 Tests 1,600 BOPD in Colombia

Gran Tierra Energy Inc. ("Gran Tierra Energy") (NYSE MKT: GTE) (GTE), a company focused on oil exploration and production in South America, today provided updates for its exploration drilling in Peru and appraisal drilling in Colombia.

"Initial drilling results from the Bretaña Norte 95-2-1XD exploration well in Peru indicate oil-saturated reservoir with a gross oil column of 99 feet that was encountered approximately 48 feet higher than oil discovered at Bretaña-1 approximately four kilometers away. Three cores encompassing 90 percent of the oil-bearing reservoir section were successfully acquired. Oil samples have also been acquired and are being analyzed which, with a testing program that is currently being designed to test reservoir productivity, will assist in determining the commerciality of the discovery.

Published: 12 February 2013
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Cline Mining Announces Appointment of Directors

 Cline Mining Corporation ("Cline" or the "Company") (TSX:CMK) is pleased to announce the appointments, effective immediately, of the Honourable Brian Tobin and Mark Haywood to its Board of Directors.

Mr. Tobin served as a Member of Parliament from 1980 to 1996, and served as Minister of Fisheries and Oceans in the Federal Cabinet from 1993 to 1996. Mr. Tobin served as the Federal Minister of Industry from 2000 to 2002. Previously, he served as the Premier of Newfoundland and Labrador from 1996 to 2000. Mr. Tobin was Executive Chairman and CEO of Consolidated Thompson Iron Mines Ltd. (CLM), an iron ore company, until May 2011, when Mr. Tobin and his team from CLM sold the organization for $4.9 billion to Cliffs Natural Resources Inc. Mr. Tobin is currently senior business advisor with Fraser Milner Casgrain LLP in Toronto, and serves on a number of public company boards, including Chairman of the Board of Directors at Marret Resource Corporation.

Published: 12 February 2013
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Invicta reports 78% increase in oil reserves in 2012

Invicta Energy Corp ("Invicta" or the "Company") (TSXV:VCA) is pleased to announce the results of its independent reserve evaluation prepared by Fekete Associates Inc. ("Fekete") in accordance with National Instrument 51-101 - Standards of Disclosure for Oil and Gas Activities ("NI 51-101") and dated effective December 31, 2012, evaluating the Company's crude oil, natural gas liquids and natural gas reserves (the "Report").  The Report is primarily based on 34 gross (20 net) producing light oil wells at Kindersley, Saskatchewan and 92 gross (50 net) proved undeveloped Kindersley locations.  Invicta has drilled 7 gross (3.6 net) of the proved undeveloped locations so far in 2013.

Published: 11 February 2013
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Petroamerica Announces Successful Las Maracas-7 Production Test Results

Petroamerica Oil Corp. (TSX-V:PTA) ("Petroamerica" or the "Company"), a junior oil and gas company operating in Colombia is pleased to announce the production test results from its Las Maracas-7 well (the "well") in the Las Maracas Field, Los Ocarros Block, Colombia. The well encountered potential net oil pay in the Mirador, main Gacheta and basal Gacheta reservoirs. The basal Gacheta sand and the main Gacheta sand were production tested yielding maximum rates of approximately 1,500 barrels of oil per day ("bopd") and 2,500 bopd, respectively. The well is now on production flowing naturally from the basal Gacheta sand.

Published: 04 February 2013
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Gran Tierra Energy Announces Record 2012 Year-End Reserves

Reserve Additions Replace 205% of Production* on a 1P Company Interest Basis After Producing a Record 8.4 Million Barrels of Oil*

Gran Tierra Energy Inc. (NYSE MKT: GTE; TSX: GTE) ("Gran Tierra Energy"), a company focused on oil exploration and production in South America, today announced the results of a qualified independent reserve evaluation of the company's reserves by GLJ Petroleum Consultants Ltd. ("GLJ") effective December 31, 2012.

Year-end 2012 Highlights, calculated in accordance with United States Securities and Exchange Commission ("SEC") rules (comparisons are to 2011 year-end amounts):

Published: 04 February 2013
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