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Midstream hero image


Midstream is the essential segue between the exploration and production (upstream) and refining oil  products and marketing (downstream) and includes pipelines and other transportation (shipping), and storage.


Geopolitics and the need to transport oil and gas over long distances to markets with high demand continues to drive growth in the development of pipelines. These enormously complex and capital intensive 'midstream' projects require a detailed knowledge of the sector as well as an international presence.


Given the global growth in demand for energy and the volatility of the energy markets generally, storage (on–and offshore) is increasing seen as an essential tool to bring enhanced security of supply and stability to energy markets.



Shipping and off-shore finance is an increasing important part of the energy supply chain as companies look to transport oil and gas over long distances to markets with high demand.  An increasing appetite for ultra deep water oil and gas exploration is also fuelling the demand for ships such as FPSOs, drillships and other offshore support vessels
Allen and Overy are pioneers in this market advising a broad range of clients including IOCs, NOCs, independents, governments, funder (equity, debt, ECAs) banks, lessors, lessees, and ship owners on the full range of ship financing techniques, EPIC and chartering arrangements.
The range of vessels on which we have advised is broad including: FPSOs, LNG carriers, drill ships, rigs, wind turbine installation ships, chemical tankers, ship conversions and VLCCs. We provide our clients with the right legal advice and structures, whatever the vessel type, and ensure this is appropriate to the market in which it will operate.

News and insights

Silo with crows sitting on the hand rails with blue sky background

News: 27 March 2024

Allen & Overy advises on the sale of majority stake in GasNet

Allen & Overy is advising Macquarie Asset Management (Macquarie), on behalf of managed funds, on the disposal of its 55.21% indirect interest in GasNet, the Czech Republic’s largest gas distribution…

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Equipment, cables and piping as found inside of a modern industrial power plant

News: 20 February 2024

Allen & Overy advises Uniper on sale of Hungarian gas fired power plant Gönyű to Veolia

Allen & Overy is advising the international energy company Uniper SE, Düsseldorf ("Uniper") on its sale of 100% of shares in its subsidiary Uniper Hungary Energetikai Kft. ("Uniper Hungary").

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interior of a modern industrial warehouse

News: 08 February 2024

Allen & Overy advises on a EUR650 million bond by Italgas

Italgas S.p.A. has placed a new bond issue, due 8 February 2029, for a nominal amount of EUR650 million intended for institutional investors. Allen & Overy has advised the joint bookrunners on the…

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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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