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Eni is a major integrated energy company committed to growth in the activities of finding, producing, transporting, transforming and marketing oil and gas.

It is an integrated company that operates across the entire energy chain, employing more than 33,000 people in 69 Countries around the world. Our way of doing business, based on operating excellence, focus on health, safety and the environment, is committed to preventing and mitigating operational risks.

Eni Refining & Marketing has always been committed to researching and producing ultra-high performance lubricants and operates in the industrial market in Italy, Europe and various other Countries.

The Eni lubricant lines for industry are able to meet all the lubrication needs of industrial plants of any type with a quality level to the top of the market.

Eni maintains and reinforces its technical and commercial leadership status in the fields of technology, quality, environmental protection and technical support for its customers.

Its organization is able to support customers for any need regarding lubrication oils and to consolidate a confidential relationship based on integrated technical support services.

Sales assistance The Eni sales network, present on the territory, provides information on the range of lubricating oils and assists customers in all the product procurement phases.

Technical assistance Eni technicians are available to help solving any operative issue and can provide their assistance to arrange lubrication guides, to follow the oil charge monitoring and to offer training courses regarding lubrication.

Laboratory assistance The Eni laboratories give their full assistance to customers for the oil charge control by periodic monitoring in order to guarantee the best operating efficiency of lubricated machineries.

The Eni Research Centre in San Donato Milanese has state-of-the-art laboratories featuring advanced equipment for studying, developing and fully identifying the characteristics of raw materials for high performance lubricants. In line with the company’s marketing strategies, the Eni research involves performing important technical activities in collaboration with important machinery manufacturers, regulatory authorities and several prestigious Italian universities. The Eni Research Centre complies with the UNI EN ISO 9001 standard in relation to the activities of “Applied research, technical support and laboratory analyses in the energy sector: lubricants, additives, bitumens, special products for motor vehicles and for industrial use” and “Production on pilot systems of lubricants, propellants and fuels” (sector EA 34,35 - certificate no. 676).

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    Eni new lubricant solution to improve the efficiency of turbomachinery in Oil & Gas eld - Eni OTE GT 15

    Environmental awareness is increasing everywhere in the world and in every sector of human activities, in fuels field different solutions have been developed to increase the sustainability of products, we can’t say the same thing for lubricants.

    In the lubricants field more attention has been given to environmental impact of lubricant due to leakage or total loss lubrication, for this purpose it has been defined the environmentally acceptable lubricants “EAL”, that is readily biodegradable, not bio-accumulative and with low aquatic toxicity.

    In these last years, a new approach is emerging that concerns the use of lubricant to improve the efficiency of machinery obtaining a reduction of fuel consumption and thus the greenhouse emissions. This approach has been adopted to develop a new class of hydraulic oils with very high viscosity index for earth moving machine; unfortunately the advantage claimed in this field is difficult to be measured due to the size of machine (low power) and the working conditions (not continuous) and conditioned by the operator’s guide, instead in the Oil & Gas eld the energy saving lubricants could play a crucial role to increase the efficiency of turbomachinery where there is a strong commitment of OEMs to increase the efficiency of gas/steam turbines and compressor.



    The continued market demand to have more efficient machines has motivated manufacturers to look for improvements even in area that have never been explored tiIl now, the lubricant, not seen only as ancillary component but as a vital part of the turbine design. Eni, with years of experience in turbine oil field based on proprietary technology in 2010, accepted the challenge to develop an innovative energy saving product and in partnership with Baker Hughes General Electric (BHGE) conceived the idea to work together to increase efficiency of industrial turbomachinery by reducing the losses due to viscous friction on lubricated parts.

    It was commonly known that reducing the oil viscosity the fuel efficiency increases, but this one was the first me that someone was doing it on these machineries.

    Since many years the viscosity of lubricating oil for industrial turbomachinery applica on is a pre- determined parameter and basically an industry standard set on two reference values: 32 cSt and 46 cSt at 40°C. A er extensive discussions, the decision was taken to approach the study of low viscosity oils, 15 cSt and 22 cSt at 40°C in order to achieve the following goals:

    •increase the overall machinery efficiency by reducing the mechanical viscous losses and relevant heat generation;

    •improve bearings lubrication behavior and minimize pad temperature at very high shaft sliding speed of advanced high-performance turbomachinery;

    •reduce the oil flow requirement and optimize design of lube oil systems.

    Aiming to build a rigorous and reliable process, it was defined a development plan which combined the theoretical and analytical study with an extensive experimental activity based on incremental approach from component to machinery system level.

    At the end of this process, after passing all the test, in 2015 Eni launched a low viscosity lubricating oil “energy saving” into the market, features: Eni OTE GT 15, this goal has been possible thanks to Eni deep knowledge in turbine oil eld and the collabora on with BHGE.

    For this reason, Eni OTE GT 15 shows excellent properties: -strong oxidation resistance;
    -the RVPOT is doubled compared to typical value of ISO VG 32;

    -excellent anti-wear properties: despite of its low viscosity:

    - the load capability is comparable to ISO VG 32proved by FZG test;
    - this result is particularly relevant considering that low viscosity could have potentially a negative impact on the anti-scuffing properties;

    -outstanding air release:
    - this means a higher oxidation control, an extended life me of the oil charge and higher protection against deposit formation;
    - in design phase can contribute to the reduction of volume of reservoir.

    -reduction of working temperature of bearing:
    o Eni OTE GT 15 allows an average reduction of 5-6°C of metal bearing temperatures up to 10°C for the ho est, the lower working temperature prolong the life of oil reducing the oxidation and carbon deposit.

    Eni OTE GT 15 is the first energy saving oil for turbomachinery

    The usage of Eni OTE GT 15 on a 30 MW natural gas turbine allows to:
    -reduce CO2 emissions of 240 ton/year;
    -save 120,000 SMC/year of natural gas;

    -reduce mechanical viscous losses from 5% to 15%; -increase the overall machinery efficiency up to 0,3%.

    Reference and outstanding results
    Eni OTE GT 15 has been submitted to BHGE bearing test

    rig and to a final validation test on a full scale machines a BHGE facility on two different trains using Centrifugal Compressor Test Vehicle and the prototype of new GT NOVA LT16:

    •the two tests have highlighted that mechanical power loss reduction varies in a range from 5% to 15% and this means an increase of overall machine effciency up to 0.3%;

    •additional advantage of the OTE GT 15 oil is an average reduction of 5-6°C of metal bearing temperatures up to 10°C for the ho est bearing. A sensitivity has also been made to verify that even under low flow conditions similar pattern is kept.

    As expected, and already pointed out in previous tests, a mechanical losses reduction is observed.

    Smooth running behaviour and operating parameters of machinery and related auxiliary equipment are in line with those recorded with a standard ISO VG 32 oil.
    Eni OTE GT 15 has been formally approved by BHGE against the new specification ITN00000014.


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