Conversation so far:
what is oil and gas downstream upstream and midstream
The terms upstream, downstream, and midstream oil and gas production refer to an oil or gas company's location in the supply chain.
which oil and gas production category is closer to the consumer
The closer an oil and gas company is to supplying consumers with petroleum products, the further downstream it is said to be in the industry.

Question: what are examples
Self-contained rewrite: what are example of downstream oil and gas companies