The global map of oil resources seems, for the first glance, complicated and tough to analysis. However, it gradually becomes easier to understand by taking a closer look at its contents.

This study we will introduce the oil movement between different countries worldwide. It also highlights the relationship between oil production and oil refinement.

The study refers to a strange phenomenon emphasizing the current trend adopted by many oil exporting countries to export   crude oil , though it would be more economically feasible to export refined and processed oil.