The oil & gas industry provides over half of our world's power, and plays a critical role in the world economy.
To learn how they are processed, see the illustration below:
After oil/gas is located, a well is drilled and production begins (i.e. oil/gas is brought to the earth's surface through the well).
When the oil/gas surfaces, the oil/gas is first separated from contaminants (e.g. wax, water, etc.), in preparation for transportation to a refinery. Proper heating is important during this process.
The gas is piped to a refinery, and the oil is brought either by truck or pipe to a refinery. Proper heating is important during these processes.
The oil/gas is then refined and delivered to local areas for use.