Question

Is an oil refinery in the Primary secondary or tertiary stage (I don’t understand)

Answer 1

Oil refineries essentially serve as the second stage in the crude oil production process following the actual extraction of crude oil up-stream, and refinery services are considered to be a down-stream segment of the oil and gas industry.

Hope it help you ✍✍✍

Please mark as brainliest answer ✍✍✍