Typically, this is done by letting the crude rest in a tank, allowing the water and oil to naturally separate, and then pumping out the layer of water from underneath the oil.
FIND OUT MORE
The Refinery Reference Desk includes content derived from our industry experts as well as from public data sources such as company websites. Nothing herein is intended to serve as investment advice. This material is based on information that we believe to be reliable and adequately comprehensive, but we do not represent that such information is in all respects accurate or complete. McKinsey Energy Insights does not accept any liability for any losses resulting from use of the content.