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Oil rig
Oil rig

Oil and Gas

Allen & Overy's market leading Oil & Gas practice advises governments and NOCs (National Oil Companies), IOCs (International Oil Companies), Independent Oil and Gas Companies, and funders (debt and equity) on all aspects of the oil and gas supply chain, including upstream (exploration and production), midstream (storage and transportation), downstream (fuels and lubricants, marketing and refining, retail and chemicals) and LNG.

Our integrated practice advises clients on transactions relating to project development, M&A (both public and private), funding (equity, debt and Islamic financing), energy and emissions trading and litigation and arbitration. All of these transactions are supported by our market leading experts in areas such as taxation, antitrust, regulatory, environment and employment, to name but a few.

Key experience


The lenders on a USD1.2bn club facility in favour of ADNOC Global Trading Ltd.

Assa North-Ohaji South Gas Processing Plant

The lenders on a USD260m limited recourse debt financing to fund ANOH Gas Processing Company’s Assa North-Ohaji South midstream gas processing plant project in Nigeria.

Saudi Aramco Gas Pipeline Company

Hassana Investment Company, part of a consortium led by BlackRock Real Assets, on the USD15.5bn lease and leaseback deal with Saudi Arabian Oil Company (Saudi Aramco).

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Occidental Petroleum

The lender on the USD235m financing to support the acquisition of Occidental Petroleum Corporation, upstream oil assets in Colombia.

Baku-Tbilisi-Ceyhan Oil Pipeline

The lenders on the USD400m partial refinancing for the development of the Baku-Tbilisi-Ceyhan 1,768km long 1.0mbbl/day capacity pipeline reaching from Baku, Azerbaijan through Tbilisi, Georgia to Ceyhan, Turkey.

Ichthys LNG

The consortium on the USD8.3bn refinancing to support the development of a subsea projection system, semi-submersible central processing facility, a floating production, storage and off take vessel at the Ichthys Fields in the Browse Basin, Australia.


APAC Oil and Gas Deal of the Year 2020

Ichthys LNG Refinancing – IJGlobal Awards 2021

“One of the leading firms that can advise lenders on international finance in the emerging markets.”

Chambers and Partners Global-wide 2021 – Projects & Energy: Oil & Gas

“Allen & Overy’s international capabilities are excellent.”

Chambers and Partners Global-wide 2021 – Projects & Energy: Oil & Gas

News and insights

Solar panel with city buildings in background

Publications: 25 September 2023

Part 5: Conclusion and potential solutions

What policy and support measures can help close the Net Zero financing gap? And what can different stakeholders do themselves to accelerate progress?

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Publications: 18 November 2022

UK sanctions against Russia: the pressure intensifies

The UK Government has introduced two further packages of sanctions against Russia in quick succession. 

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person climbing ladders

Publications: 04 January 2022

Polish hydrogen strategy

New opportunities for the development of a low carbon hydrogen economy in Poland

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Employee working on a gas utility site

Publications: 16 December 2021

European commission boosts decarbonised gases with new gas package

On December 15, 2021 the European Commission published a proposal for a revised Gas Directive and a revised Gas Regulation.

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