Start up Gran Tierra Energy Furthers Agenda with Global IDEAS Deployment

LIVINGSTON, NJ – October 25, 2005 IDEAS International, Inc, a leading supplier of financial and logistics systems to international oil & gas operations, announced today that Calgary, Canada based Gran Tierra Energy has licensed the IDEAS international oil and gas venture management solution for it’s operations in Argentina and for it’s Calgary Headquarters. Gran Tierra is an international oil and gas exploration and production company, founded in Canada and focused on South America. Its vision and mandate is to move aggressively and purposefully to build a substantial international presence and record of success.

About Gran Tierra Energy:

Gran Tierra Energy is a new company on a mission - to create substantial value, sensibly - in international oil & gas exploration and development. Our business model is based on four principles - qualified & experienced people, technical excellence, common sense and integrity.

About IDEAS:

IDEAS International, Inc., a US corporation, is a multinational software development company serving a worldwide client base from offices in the U.S. and overseas. Founded in 1982, IDEAS International has two decades of experience providing software solutions and associated professional services to world-class leaders in industry and government.

Contacts:

IDEAS International, Inc

Lucie Atamian, Director, Global Sales

973.993.8000 ext 239

luciea@ideasintl.com

Gran Tierra Energy Inc.
Tenth Floor, 610 - 8th Avenue S.W.
Calgary, AB, Canada T2P 1G5
fax (403) 537-7440