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Petroleum engineering

field of engineering concerned with the activities related to the production of hydrocarbons, which can be either crude oil or natural gas

Pronunciation
/pəˈtroʊliəm ˌɛnʤəˈnɪrɪŋ/
/pɪˈtrəʊlɪəm ɛnʤɪˈnɪərɪŋ/