mrjj MM, I think you may stress your multi-cultural background in the work fields for goverment(state owned campany), private company and foreign companies( you're translator and business coordinator, assistant or associate). Also, you may mention that you have some insights in the operation models for each business type.
What's more, energy is a kind of strategic resource such as petroleum and is related to both economic and political issues, so you may highlight the unique point in your essay.