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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 & insights

Microscope image of hydrogen molecules

Publications: 13 MAY 2021

Rise of green hydrogen in the Gulf Cooperation Council (GCC)

In this article, which was published in PFI’s Global Energy Report 2021, Elliott Sawford and Mike Campbell consider how decarbonisation is becoming increasingly urgent globally and how Gulf…

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Building columns

Publications: 25 FEBRUARY 2021

Okpabi: Supreme Court rules that Nigerian communities can sue Shell and its Nigerian subsidiary in England

Okpabi and others (Appellants) v Royal Dutch Shell Plc and another (Respondents) [2021] UKSC 3, 12 February 2021.

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Power plant

Publications: 13 MAY 2020

LNG market outlook and Covid-19 coronavirus

The onset of an oil price war has already led to a significant drop in the oil price and is expected to lead to further volatility in the oil price in the short to medium term. The combination of the…

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Crashing waves

Publications: 22 APRIL 2020

Private equity’s upstream journey

Private equity interest in the E&P industry soared in the wake of the 2014 oil price crash. However, renewed appetite for upstream assets was not only predicted on exploiting commodity cycles.

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