Coral South is the first Eni project for the development of gas resources that were discovered in the Rovuma Basin, in deep waters offshore Mozambique. The technological centrepiece of the project is the Coral Sul FLNG (Floating Liquid Natural Gas) liquefaction plant, a ship 432 metres long and weighing over 200,000 tonnes, the equivalent of two aircraft carriers. The living module is as tall as a nine-storey building and can house up to 350 people. The internal decks inside the hull and on deck house the facilities for extracting, treating and liquefying natural gas, along with the tanks in which LNG (liquefied natural gas) will be stored while awaiting the LNG carriers that will transport it to the mainland. The FLNG vessel is moored about 200 km off the coast of Mozambique and is connected to six subsea wells at a depth of about 2,000 metres, which in turn penetrate up to 3,000 metres below the ocean floor to reach the rocks saturated with natural gas of which the Coral field is composed. From there, gas flows up along flexible pipes to the ship.
The Coral Sul FLNG ship was designed and built according to the most advanced sustainability criteria. Starting from the design phase, thanks to a systematic analysis of energy efficiency, solutions to minimise CO2 emissions were adopted, for example by means of gas turbines that have reduced emissions in comparison to similar ones, variable-speed electric engines, low-loss, high-voltage electric transformers, maximized system waste heat recovery (WHR) efficiency, boiler exhaust WHR, high-efficiency gas treatment. These technologies integrate and they are aimed at decreasing the energy used to liquefy the gas and minimising the impact on the environment, which places Eni's FLNG ship above the benchmark in its sector in terms of energy efficiency. Overall, Coral Sul FLNG's energy consumption is significantly lower than the industry average: 256 kWh per tonne of LNG produced instead of 275/400 kwh/ton of such units in operation today. This is the result of the expertise of an international team of technicians and engineers from three different continents: Asia, Africa and Europe.
The Coral South project provides a major new source of natural gas to help secure global supplies. Alone, the Coral field feeding the Coral Sul FLNG ship has an estimated reserve of about 500 billion cubic metres of natural gas. Considering the entire Coral, Mamba and Agulha geological complex, a “Supergiant”, the reserve contains an estimated 2.4 trillion cubic metres of gas. Processed and distributed as LNG, this gas will help to increase market availability and will be an important economic development lever for Mozambique.
PRESS RELEASE | Mozambique’s first LNG cargo departs from Coral Sul FLNG, offshore the Rovuma basin on 13th November 2022
Natural gas is a key energy source to accompany the technological development process along the decarbonization pathway. Although it is of fossil origin, it produces about half the carbon dioxide emissions released by coal – which is still the main fuel used to generate electricity and the largest source of CO₂ in the world - and is much less polluting. Liquefied natural gas transported by sea by LNG carriers represents a small revolution because it makes it possible to distribute gas all over the world, contributing to a diversification of sources and security of supply whilst speeding up the energy transition. Power plants fuelled by natural gas are the most efficient way to provide electricity on demand when weather conditions reduce the energy supply from renewable sources such as wind and sun.
Two augmented reality features to discover what Coral Sul FLNG looks like and where the gas that will be transformed into LNG comes from.
Inside Coral South
Get ready for an immersive experience with the support of augmented reality. Step aboard the Coral Sul FLNG ship and explore the field under the seabed.
Interactive content to learn more about the characteristics and strengths of the project.
Coral South in detail
An interactive feature with 3D reconstructions, videos and figures: browse our special report and discover how the great project offshore Mozambique came into being and how it operates.
Coral South LNG is the best expression of our expertise in large international projects.
Technological excellence
Established technologies and cutting-edge solutions to maximise efficiency and sustainability.
A global vision
A project led by Eni involving the producing country and major international players
Time to market
Engineering development delivered fast and on time.
Sustainability
Solutions to reduce GHG emissions and value local resources.
Energy security
Safer and more diverse gas supply thanks to the potential of LNG
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