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SUSTAINABILITY
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Water Management
The growing areas that are susceptible to desertification, the demographic increase or the pollution of the water needed by entire communities and territories have determined a different approach toward water resources.
Water is a local resource and the impact on water is determined not only by the quantity used but also by the availability and quality of resources, in addition to the dependency on it by communities and areas rich in biodiversity.
Eni has reduced fresh water consumption while it has expanded activities in the production and transformation of oil products.
This result was possible thanks to the adoption of eco-efficient technologies (closed cycles and use of sea water and of substitute systems in the industrial cooling processes).
In 2009, the consumption of fresh water decreased by approximately 5% (from 220 to 209 mln/m3) in line with the reduction objectives set out for the next four years. Eni is estimating to reach another 10% reduction in the withdrawal of fresh water and to maintain the amount of recycled water at a fixed 30%.
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Petrolchemicals -
Exploration & Production
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Gas transmission
In the petrochemical sector, one of the most relevant projects is to be conducted at the Mantua. The project entails two initiatives aimed at reducing by approximately 17 mln m3/year the water withdrawal from the Mincio river; the work is to be completed in 2011 and will bring a 20% reduction in the consumption of fresh water by Eni's petrochemical operations.
In the Exploration & Production sector, specific interventions are underway in order to contain the consumption of fresh/salty water in particularly sensitive areas (Libya and Congo).
Still in the Exploration & Production sector, the practice of produced water re-injection, used to maintain pressure in the reservoirs, allows for a reduction in the impact from contaminated waters and avoids having to withdraw fresh water.
In 2009, some projects were completed, some other projects began operations in Bouri, Abu Attifel, Wafa (Libya), in Belaym (Egypt) and in Ogbainbiri (Nigeria), for a total of 6.2 million m3 re-injected in 2009 and a smaller consumption, by 1.1 million m3, of brackish water. In Indonesia, all the production water used in 2009 at the sites of Badak, Nilam and Semberah were re-injected into the reservoirs and in 2009 the project was extended also to the fields of Pamaguan and Mutiara.
Other projects in Egypt, Indonesia, Algeria and Congo are at an advanced phase, while the projects in Italy and Kazakhstan have just started.
In 2009, the overall expenditure related to water-injection projects was 127 million Euros and it is estimated that, thanks to an additional expenditure of 181 million Euros, 65% of the water extracted with the oil is going to be re-injected (against 44% in 2009) thus avoiding water discharges of roughly 12 million m3.
Produced water from oil/gas production
| 2007 | 2008 | 2009 | |
| Extracted | 48.34 | 52.,93 | 59.66 |
| Re-injected | 14.72 | 14.88 | 23.31 |
In 2009, the gas sector has completed the construction of phyto-treatment plants at the facilities of Enna and Terranova.
Sergaz, in Tunisia, has started monitoring the consumption of drinkable water and a project for the recovery of treated water for the irrigation of green areas.
In addition, the trend already observed last year is being confirmed with roughly a 22.4% reduction in the withdrawal of fresh water, due mainly to less use of water at the headquarters.
