The petroleum industry is highly specialised. Over the centuries, it has developed many standard petroleum arrangements and contracts that are not familiar to all across the industry - and even less to the outside world. Each has its own detailed terms and provisions. This new edition uniquely combines an encyclopaedia with commentary on both midstream and downstream activities. The topics it covers include energy policies; the relevant players in the sector - from governmental authorities to national oil companies; gas storage; the regulatory and contractual frameworks governing gas and sales agreements; liquefied natural gas; pipelines; distribution networks; and refineries. It has also been expanded with new chapters covering topics such as: Shipping; Antitrust; Third-party access; Taxation; and ESG. This approach enables all those involved in the petroleum industry to master the necessary legal terms in one publication. Chapters are written by leading experts from across the globe to provide the best industry practices and standards. The encyclopaedia will serve as a valuable tool for lawyers, industry professionals, consultants and academics who are interested in understanding the key legal terms and provisions of the oil and gas industry.