The problem with crude oil is
that it contains hundreds of different types of
hydrocarbons mixed together. The crude oil is
processed first on field sites called batteries.
These are tanks with saltwater and sand, and the
natural gas bubbles to the top which cleans the oil.
The gas is either captured to be used or flared out.
The oil sits in the middle of the tank where it is
then piped out to tanks. The sand used in the
process is taken to landfills. The saltwater is
reinjected into the tank to keep the pressure up.
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