Stavanger, Norway
Stavanger, Norway

Eni S.p.A. is an Italian multinational oil and gas company headquartered in Rome. It has operations in 79 countries, and is currently Italy's largest industrial company with a market capitalization of 68 billion euros , as of August 14, 2013. The Italian government owns a 30.303% golden share in the company, 3.934% held through the state Treasury and 26.369% held through the Cassa Depositi e Prestiti. Another 2.012% of the shares are held by People's Bank of China. The name "ENI" was initially the acronym of "Ente Nazionale Idrocarburi" . Through the years after its foundation however, it operated in a large number of fields including contracting, nuclear power, energy, mining, chemicals and plastics, refining/extraction and distribution machinery, hospitality industry and even textile industry and news. Wikipedia.

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Zattin M.,University of Padua | Andreucci B.,University of Padua | de Toffoli B.,University of Padua | Grigo D.,ENI S.p.A | And 2 more authors.
Marine and Petroleum Geology | Year: 2016

The Cenozoic evolution of the Barents Sea has been widely debated for its implications on hydrocarbon exploration. In this paper, we provide the first, for the area, apatite (U-Th)/He thermochronology data on Early-Middle Jurassic and Early Cretaceous sandstone reservoir samples obtained from three wells located on the western part of the Barents Shelf. A large range of grain ages have been detected, ranging from 1.58 to 50.65 Ma. These thermochronological data, initially integrated with vitrinite reflectance measurements to properly constrain the burial history evolution, have been modelled on the basis of estimated maximum temperature in order to evaluate the cooling path to present-day temperatures. Outputs from modelling indicate that: 1) the amount of net uplift and denudation is in the order of 1000 m, and 2) the last important phase of exhumation occurred during late Miocene-early Pliocene time, therefore challenging the prevailing idea of substantial uplift linked to the observed shelf-progradation along the margin as a result of the Plio-Pleistocene glaciations. The timing of the distinct exhumation event documented here may be, instead, attributed to different mechanisms. These may include basin inversion widespread on the NW European margin that is probably related to local changes in the North Atlantic spreading vector, while other mechanisms may include thermal and lithospheric-scale anomalies observed at the northwestern corner of the Barents-Svalbard Shelf. © 2016 Elsevier Ltd.

Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: NMP-2007-3.1-3 | Award Amount: 19.08M | Year: 2008

iNTeg-Risk is a large-scale integrating project aimed at improving the management of emerging risks in the innovative industry. This will be achieved by building a new risk management paradigm for emerging risks, which is a set of principles supported by a common language, commonly agreed tools & methods and Key Performance Indicators integrated into a single framework. As main impact, it will reduce time-to-market for the lead market EU technologies and promote safety, security, environmental friendliness and social responsibility as a trade-mark of the advanced EU technologies. The project will improve early recognition and monitoring of emerging risks, seek to reduce accidents caused by them (estimated 75 B/year EU27) and decrease reaction times if major accidents involving emerging risks happen. iNTeg-risk will reach its goals by promoting a EU-wide cross-sectorial life-cycle-based integration across all major disciplines, methods and tools as well as through integration of all relevant stakeholders. The project will be initiated from an empirical basis of 17 individual emerging risk issues (Emerging Risk Representative industrial Applications), and generalize their solutions addressing new technologies, products/materials, production and policies. The solutions will be validated in a second application cycle, and the overall solution made available to stakeholders in the form of the iNTeg-Risk platform: a one-stop shop for EU solutions addressing emerging risks. It will feature issues of early recognition and monitoring of emerging risks, communication, governance, pre-standardization, education & training, dissemination, as well as new tools such as Safetypedia, Atlas of Emerging Risks, Reference Library... The project has a solid industry leadership and involves the leading EU R&D institutions. It is coordinated by the European Virtual Institute for Integrated Risk Management, the EEIG guaranteeing the sustainability of the results after the project.

Ghinassi M.,University of Padua | Ielpi A.,Laurentian University | Aldinucci M.,Eni Norge AS | Fustic M.,University of Calgary
Sedimentary Geology | Year: 2016

Classical models developed for ancient fluvial point bars are based on the assumption that meander bends invariably increase their radius as meander-bend apices migrate in a direction transverse to the channel-belt axis (i.e., meander bend expansion). However, many modern meandering rivers are also characterized by down-valley migration of the bend apex, a mechanism that takes place without a significant change in meander radius and wavelength. Downstream-migrating fluvial point bars (DMFPB) are the dominant architectural element of these types of meander belts. Yet they are poorly known from ancient fluvial-channel belts, since their disambiguation from expansional point bars often requires fully-3D perspectives. This study aims to review DMFPB deposits spanning in age from Devonian to Holocene, and to discuss their main architectural and sedimentological features from published outcrop, borehole and 3D-seismic datasets. Fluvial successions hosting DMFPB mainly accumulated in low accommodation conditions, where channel belts were affected by different degrees of morphological (e.g., valleys) or tectonic (e.g., axial drainage of shortening basins) confinement. In confined settings, bends migrate downstream along the erosion-resistant valley flanks and little or no floodplain deposits are preserved. Progressive floor aggradation (e.g., valley filling) allow meander belts with DMFPB to decrease their degree of confinement. In less confined settings, meander bends migrate downstream mainly after impinging against older, erosion-resistant channel fill mud. By contrast, tectonic confinement is commonly associated with uplifted alluvial plains that prevented meander-bend expansion, in turn triggering downstream translation. At the scale of individual point bars, translational morphodynamics promote the preservation of downstream-bar deposits, whereas the coarser-grained upstream and central beds are less frequently preserved. However, enhanced preservation of upstream-bar deposits can be controlled by aggradation at the scale of the entire meander belt. Despite their different preservation potential, the sedimentology of downstream-bar deposits is overall similar to that of expansional bars, since a downstream decrease in grain size and dominance of upbar-directed palaeoflows are observed in both cases. Bar-tail deposits are instead distinctive of DMFPB, specifically when channel-flow impinges at high angle against river outer banks. There, fine-grained counter-point bars or coarse-grained eddy-accretion deposits can accumulate. Channel belts dominated by DMFPB develop cross-sectional configurations featuring two main marginal trenches, commonly filled with bar tail deposits. © 2016 Elsevier B.V.

Salimi S.,Eni Norge AS | Ghalambor A.,Oil States International | Hayer H.,IUST
SPE - European Formation Damage Conference, Proceedings, EFDC | Year: 2014

This paper presents the simulation results of acidizing process in naturally fractured reservoir (NFR) by application of advanced numerical technique. Accurately predicting fracture and matrix flow is often critical to assessing well productivity in naturally fractured reservoirs. Fracturing with acid (usually hydrochloric acid [HCI]) is an alternative to propped fractures in acid-soluble formations such as dolomites and limestones. Computational Fluid Dynamics (CFD) is a computational technology that enables study of the dynamics of materials that flow. The CFD code is used to simulate the fluid flow through the fracture and matrix. The model is based on coupled multiphysics phenomena such as Darcy's law in porous media, reaction flow equation for the fracture and fracture growth by acid dissolution. Reaction flow in the fracture is controlled by diffusion and convection terms. The model simulates the impact of fracture geometry, acid properties, fracture width, matrix permeability on the acidizing process. The results show that diffusion and convection terms will control the transport of acid through the fracture (as there are limits to this process), when the mass transfer coefficient (Kg) is higher than 10e-5 m2/sec, the mechansim of acid trasnport will be controlled by convection term on the fracture surface. Physically ,this means that acid transport to wall by diffussion term is negligible. When the fracture width is higher than 200 micron (0.00002 m), the acid will react with the most of the surface of the fracture and it will be dissolved by acid considerably. The mass transfer coefficient will also play an important role during acidizing process as the results show. The results of this study were used as guidelines to design a more effective acid job by predicting the acid penetration and acid volume for matrix acidizing in naturally fractured reservoirs. Furthermore, the contrasts in job design for lithology of the carbonate formation are also presented. Copyright 2014, Society of Petroleum Engineers.

Storti F.,University of Parma | Balsamo F.,Third University of Rome | Cappanera F.,ENI S.p.A | Tosi G.,Eni Norge AS
Marine and Petroleum Geology | Year: 2011

Chalk is exposed in the Heidestrasse quarry at Lägerdorf, at the top of the NE-SW trending Krempe salt ridge. Structural data indicate the presence of two joint sets, striking almost parallel and perpendicular to the salt ridge, respectively, and of a set of conjugate extensional faults and fault zones striking NW-SE, i.e. almost perpendicular to the salt ridge. Within the overall NW-SE trend of joints and faults, strike variations occur from the massive chalk exposed in the lower half of the quarry, to the overlying layered chalk. A large variability characterizes the normalized spacing of both joint sets, which does not show any clear trend with layer dip. In situ measurements indicate that the cross-sectional permeability of tight joints increases 1-2 orders of magnitude with respect to the undeformed chalk. We propose that joint and fault azimuthal variability resulted from changes through time of the stress ellipsoid at the top of the salt ridge, while joint spacing variability is associated with the weak mechanical influence of bedding in chalk. Azimuthal variability improves fracture connectivity and, hence, permeability and fluid flow. © 2011 Elsevier Ltd.

Firinu M.,ENI S.p.A | Zappalorto L.,Eni Norge AS
Oilfield Review | Year: 2013

Operators have had difficulties obtaining pressure measurements and samples with conventional wireline formation testers in certain formations and reservoir fluid types. Engineers have recently developed a tool for reliable testing even in challenging environments such as low-mobility formations and heavy oil. Copyright © 2013 Schlumberger.

Dell'Aversana P.,ENI S.p.A | Colombo S.,ENI S.p.A | Ciurlo B.,ENI S.p.A | Leutscher J.,Eni Norge AS | Seldal J.,Eni Norge AS
First Break | Year: 2012

We describe a novel approach to the interpretation of marine controlled source electromagnetic (CSEM) data based on electromagnetic attributes in combination with gravity and seismic data. This integrated approach involves a new electromagnetic attribute of resistor probability, and has been applied in a complex exploration area in the Barents Sea adjacent to an extensive carbonate platform. We used the data recorded by a total of 172 CSEM receivers from two different surveys. Gravity data were also used to highlight large-scale geological features. Integrating seismic, electromagnetic, and gravity information helped to distinguish resistivity anomalies caused by geological variations from those caused by hydrocarbons. Finally, the hydrocarbon distributions in two stacked reservoirs were accurately mapped. Our integrated approach significantly improved the appraisal of the field, reducing the exploration risk in the surrounding area and facilitating the placement of future wells. © 2012 EAGE.

Danielsen B.E.,EMGS ASA | Madsen H.B.,Eni Norge AS
Near Surface Geophysics | Year: 2013

In rock engineering construction projects it is common to make core drillings to quantify rock quality using different classification systems such as weathering and rock quality designation. The classifications are done on a metre scale by a geologist on site. However this is a subjective assessment where the human factor comes into play. Important observations might be overlooked or interpreted incorrectly. Therefore a more objective method is needed. The scope of this paper is to show how even low degrees of weathering of rocks lowers the resistivity, an effect that otherwise might be overlooked by the geologist because the core appears unaltered and is thus not reflected in the standard rock quality measures. This was done by means of thin-section microscopy, point counting and resistivity logging on gneisses and amphibolites from two drill cores done in connection with the construction of the Hallandsås Tunnel, Southern Sweden. The study showed that the resistivity logs can detect even low grades of weathering of amphibolites, which can be important in determining the mechanical properties of the rock. The result suggests that focusing on the transitions between different lithologies is important because the rocks at the lithological contacts are more susceptible to fracturing, water flooding and weathering. This might not be obvious from the regular geological core description but this is indicated by the resistivity logs. © 2013 European Association of Geoscientists & Engineers.

Bjornbom E.,Eni Norge AS | Hansen O.,Eni Norge AS | Melhus M.L.,Eni Norge AS | Klevstad U.,Eni Norge AS
Society of Petroleum Engineers - SPE International Conference and Exhibition on Health, Safety, Security, Environment, and Social Responsibility | Year: 2016

The Goliat field operated by Eni Norge AS, with Statoil Petroleum AS as the only partner, will be the first offshore oil field in the Norwegian Barents Sea and the world's northernmost offshore oil field. The Goliat field is being developed with a geostationary FPSO connected to 8 subsea templates with 22 wells (12 production wells, 7 water injectors and 3 gas injectors). The FPSO is on location and commissioning work is ongoing. The field is located in the south western part of the Barents Sea, relatively close to the coastline. The Barents Sea is a sea area important for a number of fish stocks, sea birds and sea mammals. A number of "Particularly valuable and vulnerable areas" has been identified as part of the work conducted in relation to the update of the "Integrated Management Plan for the Marine Environment of the Barents Sea-Lofoten Area" presented to the Norwegian Parliament in the "White Paper no. 10 (2010 -2011). The area has high political focus, especially on oil spill preparedness and environmental issues. Environmental issues have been highly prioritized through all the project phases, in order to fulfill the frame work conditions set for the sea area by Norwegian Authorities and the specific requirements set by the Norwegian Parliament when approving the Plan for Development and Operation (PDO) for the Goliat field in 2009. The Goliat development project has developed and implemented new solutions, which will result in improved environmental performance. The paper will address how the Goliat development project has implemented environmental BAT (Best Available Technic) solutions in relation to: • Power solution (electrical power from shore in combination with gas turbine on FPSO) • Emission to air reduction measures (mininimize GHG (Green House Gases) and other emissions, improved energy efficiency) • Reduction of discharge to sea (re-injection of produced water, slop tank size, internal drain system, facility design) • Offloading solution (new design) • Environment monitoring solution (leak detection) • Oil spill preparedness (new concepts in coastal areas) The paper is closely linked to previous SPE papers presenting the Goliat field development, such as SPE paper 156773 "Implementation of the oil spill preparedness for the Goliat offshore oil field development - The first oil field development in the Barents Sea" (1), SPE paper 156795 "Coastal Oil Spill Preparedness Improvement Programme (COSPIP) and Memorandum of Understanding - Comprehensive Joint & Industrial project focusing on coastal oil spill challenges" (2) and SPE paper 126598 "EIA for the Goliat Offshore Oil Field Development. World's northernmost offshore oil development?"(3). Copyright 2016, Society of Petroleum Engineers.

Oien K.,Sintef | Nielsen L.,Eni Norge AS
Society of Petroleum Engineers - SPE/APPEA Int. Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges | Year: 2012

The opening of the Barents Sea for oil and gas exploration and development has been a controversial topic of social debate in Norway, particularly due to environmental and fisheries interests. A zero tolerance regime for oil spills has been introduced in this Northern Region, which means that every effort should be made to avoid oil spills. Eni Norge is presently developing the Goliat oil field in the Barents Sea and production is planned to start in 2013. The Goliat field is the very first production oil field in the Barents Sea. SINTEF has developed a method for establishing proactive safety indicators for monitoring of risk of oil spills at the Goliat field. As all possible accident scenarios cannot be foreseen in advance, particularly with new challenges such as oil production in Arctic areas, Eni Norge needs to prepare for the unexpected. This is why a resilience perspective (i.e. capability of recognizing, adapting to, and coping with the unexpected) has been pursued in developing the safety indicators. The potential benefit of the proposed method has been demonstrated using the Deepwater Horizon accident as an evaluation case. The main difference from other similar work is the focus on coping with the unexpected - building on the research on resilience. The information provided in this paper is applicable to any development and use of proactive safety indicators in the oil and gas industry. The first application - also used during the development of the method - is the Goliat oil field in the Barents Sea. The paper presents the conclusions from the evaluation of the safety indicator method using the Deepwater Horizon (DWH) accident as case. The evaluation shows the relevance of this resilience based method, in particular the general resilience issues being a central part of the method. It shows that indicators for the proposed general issues could have provided early warnings for the Deepwater Horizon accident. The significance of the work is the provision of (resilience based) proactive safety indicators to prevent accidents in the future. Copyright 2012, SPE/APPEA International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production.

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