My Bachelor is in computer sciences. I want to work in oil, gas chemicals, metals and petrochemical companies. Which major will be the best combination with CS?
What about chemical engineering?
chemical would be a good option. some unis offer oil and gas engineering but is normally difficult to get into. Geomatical engineering also deals a bit with oil and gas.
electrical goes best with CS.
you will count as a full computer nerd that way
and most EE's nowadays tend to work in the computer business anways.