GTE

Gran Tierra Energy Inc.

An oil and gas explorer that finds and produces crude oil and natural gas from underground reserves, Gran Tierra has long been a major presence in South America's fields. Headquartered in Calgary, Alberta, the firm was renamed in 2005 during a share exchange and has built its business around wells in Colombia, Ecuador, and Canada. Its Spanish name "Gran Tierra" simply means "Great Land" — a fitting nod to the terrain beneath its drilling sites.