Ecopetrol, Permian Basin and Occidental Petroleum

One such company is Occidental Petroleum (NYSE: OXY), Berkshire Hathaway's sixth-largest holding. Don't get me wrong: Occidental Petroleum appears to be a well-run company. Buffett has expressed ...
Ecopetrol is the largest company in Colombia and one of the main integrated energy companies in the American continent, with more than 18,000 employees. In Colombia, it is responsible for more ...
Ecopetrol SA engages in the exploration, development, and production of crude oil and natural gas. It operates through the following segments: Exploration and Production, Transportation and ...