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Oilfield, enhanced oil recovery Pipe network

Enhanced oil recovery

Mott MacDonald's oil and gas consultants offer unparalleled expertise in EOR acquired on award-winning flagship projects in the Middle East. Our vast experience of works on different types of EOR techniques gives us the edge and makes us the partner of choice for EOR projects of any scale and any technique.

Illustrating the diversity of our oil and gas business, we’re delivering key components of an enhanced oil recovery project that will increase production from Oman’s Qarn Alam field by a factor of 25.

What is EOR and its benefits?

Tertiary recovery, also known as enhanced oil recovery (EOR) is a range of production techniques aimed at reducing oil viscosity and improve flow by introducing heat, fluids or gas in the reservoir.

The worldwide average recovery rate from an oilfield is 35%, which means that the majority of oil in a reservoir is not recoverable using traditional recovery methods. Implementing the right EOR technique can increase the recovery factor by up to 60%.

EOR brings clear advantages; by prolonging the life of depleting fields, it defers the capital costs of finding and developing replacement resources.

Our experience

Mott MacDonald has a solid track record on EOR projects covering the three main methods of EOR:

Thermal EOR

We were engineering consultants on the US$1.2 billion Qarn Alam Steam Plant in Oman, the world’s first full-field steam injection project based on thermally assisted gas/oil gravity drainage (TAGOGD) in a fractured carbonate reservoir.

Our project won the Engineering Achievement Award at the 2011 Oil & Gas Middle East Awards.

Chemical EOR

We worked on the Marmul Polymer Flooding Project, the first full-scale polymer project in Oman. With this method water-soluble polymers increase the viscosity of injected water leading to a more efficient displacement of heavy oil. The project won the Enhanced Hydrocarbon Recovery Project Award at the 2010 Oil & Gas Middle East Awards.

Miscible gas

Following a successful CO2 injection pilot project in Abu Dhabi, we are currently involved in large scale CO2 injection projects in the Rumaitha and Bab oilfields for our long-term client ADCO. At high pressure, carbon dioxide dissolves into oil reducing its viscosity.

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