Pipeline and storage:
Oil is moved through the pipelines by pump stations along the pipeline. Natural gas is slightly pressurized to liquids and moved through the pipelines. Usually oil pipelines are buried and its made from carbon steel or plastic tubes. Today Companies use oil storage as a strategic tool to increase profits in the global market. Some of companies can purchase oil to low price and wait until prices rise before selling. A 'contango' is a condition in the oil market where it is expected that people will be willing to pay more in the future than at the current price.