Marathon Pipe Line LLC (MPL) operates 199 aboveground petroleum storage tanks at 35 different locations across the U.S. These tanks are used to meet customer demand by ensuring that there are enough petroleum liquids available to keep the pipelines in motion. A tank farm is simply a collection of storage tanks located on the same site.
Crude oil and refined products are stored in tanks at pipeline origination points awaiting shipment. Crude oil is then delivered to refinery storage tanks in preparation for processing. Refined products are ultimately delivered to terminal storage tanks and then distributed to the consumer. Some storage tanks are used to gather crude oil from production wells, while other tanks are used to store seasonally refined products that only become available for sale during certain times of the year. In addition, MPL uses some tanks to store brine that is used to displace product in the operation of caverns.