Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Upstream definition

What does Upstream mean? In legal practice, “upstream” describes exploration and production (E&P) activities: acquiring rights to search for petroleum, conducting seismic and appraisal, drilling and field development, and producing hydrocarbons to the point of export or entry into midstream infrastructure. It is a widely used commercial and regulatory descriptor rather than a defined statutory term, appearing across contracts, regulatory guidance and transaction documents. Typical upstream documents include petroleum licences and leases, assignments and farm-out agreements, joint operating agreements (JOAs), drilling and oilfield services contracts, security and project finance instruments, and decommissioning arrangements. Key legal issues include title to petroleum in situ and on production,...

Journal of World Energy Law and Business: curated index and summaries of recent international energy law, regulation and transactions articles (Lexis+ subscribers only)

Published by a LexisNexis Energy expert

Practice notes

Relevant articles

The Journal of World Energy Law and Business (JWELB) serves as the official publication of The Association of International Energy Negotiators (AIEN) (previously The Association of International Petroleum Negotiators (AIPN)) and carries pieces on legal, commercial and policy matters within the international energy sector, covering Upstream oil and gas transactions, finance, taxation, regulation, dispute management, alternative energy resources, energy policy and security, and international energy organisations.

These works, addressing both domestic and international topics, may interest energy lawyers and are accessible via links from this page. These articles are available solely to Lexis+® Subscribers.

Publication Date Article Jurisdiction Brief description of article

1 December 2024 — Good Oilfield Practice: its history and evolution — J World Energy Law Bus (2024) 17 (6): 351 — World. Good Oilfield Practice defines the standards by which oil and gas operators conduct their activities. The article delivers a thorough historical examination from origins more than a century ago to today’s modern global industry. It has continually developed to embrace all facets of the oil and gas industry, reflecting the risk, complexity and uncertainty inherent in the industry’s operations...

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Web page updated on 21/05/2026

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