Saudi Arabia holds the title as the world's largest producer and exporter of total petroleum liquids, and the country's national corporation, Saudi Aramco retains the most proven reserves and production of hydrocarbons worldwide. Only behind Russia as the largest crude oil producer, Saudi Arabia has an estimated 267 billion barrels of proven oil reserves, including 2.5 billion in the Saudi-Kuwaiti Neutral Zone, and 253 trillion cubic feet (Tcf) of proven natural gas reserves. Impressively, more than half of Saudi Arabia's oil reserves are sourced from only eight fields.
Supply chain management encompasses demand and supply planning, suppliers, inventory, warehouse and logistics management. It covers all processes related to raw materials and associated information from sourcing to end users. There are various certification exams developed for supply chain professionals, namely APIC's certification (Certified Supply Chain Professional or CSCP), ISCEA'S certification (Certified Supply Chain Manager or CSCM), and the CISCM certificate (Chartered Supply Chain Management Professional or CSCMP).