The oil and gas industry is involved in a global supply-chain that includes domestic and international transportation, ordering and inventory visibility and control, materials handling, import/export facilitation and information technology. Thus, the industry offers a classic model for implementing supply-chain management techniques. In a supply-chain, a company is linked to its upstream suppliers and downstream distributors as materials, information, and capital flow through the supply-chain. The purpose of this paper is to investigate the role of supply-chain management in the oil and gas industry. This paper also discusses the application of the Uniform Commercial Code (UCC) to supply-chain management issues. Then, several strategies are examined for improving supply-chains in the oil and gas industry. Finally, two case studies are introduced to show how improving supply-chain logistics in the oil and gas industry can improve efficiency and the bottom line.