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eni in the United States2015

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eni in theUnited States

• Start-up of East Breaks 112 field(1996).

| 1999/2000• Acquisition of working interests in the Macaroni andEuropafields(1999) withfirstproduction in3Q1999and1Q2000 respectively.• Acquisition of British Borneo (2000),includingoperatorship oftheAlleghenyand Morpethdeepwaterfields (100%),andanexploration leaseportfolioofover 100blocks.•PartneringwithExxonMobil andTexacotoexploreover 300leases.

| 2002/2003• Start-up of operated production in King Kong and Yosemite gasfields,whicharetied backtoAlleghenyTLP.•Start-upoftheMedusafield (eni25%).

| 2004• enimakes3commercial discoveries:AlleghenySouth (operated),UlyssesandNorth BlackWidow;alldeveloped onafasttrackbasis.

| 2005• eniacquires103leasesfrom ArmstrongontheNorth SlopeofAlaska.• Production start-up of the K2 (operated)andUlyssesfields.

| 2006• Production startup from theAlleghenySouth andNorthBlack Widowdiscoveries.•Newgasdiscoveries: LonghornandLonghorn North(botheni operated 75%)incentralMississippi Canyonarea.•Alaskadevelopmentactivity progresses: sanctioned the developmentofthe Ooogurukfield(eni 30%) andstart-upoftheappraisal

phaseoftheNikaitchuqfield (eni30%).

| 2007• eniacquiresallGOM assets of Dominion and reaches a net production of approximately110,000boe/d (60%operated).Themain producingfieldsacquired areDevil’sTower,Tritonand Goldfinger(75%operated), andFrontRunner(37.5%).• eniacquiresanadditional 70%stakeandoperatorship ofNikaitchuqprojectin AlaskafromAnadarko.•Start-upof3gasfields connected to Independence Hub:SanJacinto(53.3% operated),Spiderman (36.7%)andQ(50%).•Sanctioneddevelopment ofLonghornfield(75% operated)andPegasus field(58%operated).

| 1967/1968• First period of eniexploration intheUS.

| 1979/1981• Opening of eniExploration &Productionoffices inNewYork.•Start-upofactivitywith TexacoonCaliforniaand Texasonshore.•Transferofexploration andproductionoffices to Houston and subsequent increase of eni’sactivityby acquiringexplorationleases offshoreTexasandLouisiana.

| 1991/1993•Acquisitionof5fields (3operated)fromFreeport McMoRan(1991).•Saleofallonshoreassets(1993).• enifullyconcentratesits activityintheoffshore(1993).

| 1994/1996•Start-upofGrandIsle102 field(1994).

| 2008 GOM:

• eni sanctions the developmentofAppaloosa (operated100%)and LonghornPhaseII(operated 75%)intheGreater LonghornArea.• eniacquiredtheCrystal Platformas“host”forthe LonghornandAppaloosa projects.• Start-up of production from Pegasusfield(operated 58%);tiedintoAllegheny TLP(100%).• eni participates in discoveries atKodiak(25%)and Stones(15%).

Alaska:• Commenced production from the Oooguruk field(30%).• enisanctionsthedevelopment, commencesdrilling,and acquires3-Dseismic(OBC) fordevelopmentoptimization oftheNikaitchuqfield

(operated100%)onthe NorthSlope.Nikaitchuqis thefirstdevelopmentproject operatedbyeniinAlaska.• eniacquires18leasesinthe ChukchiSeaFederalLease Sale(4operated100%,14 non-operated40%).

| 2009• eniproductioncapacity in the US amounts to 120,000boe/daywith80% inDeepwaterGOM,15% inShelfGOM,3%inBarnett Shaleand2%inAlaska. enioperatesover55% ofitsequityproduction.

GOM: • eniholdsinterestsin 369leasesinGOM(269 Deepwaterand100Shelf).• eniupgradestheCrystal Platform,renamingitCorral Platform(75%operated), and commences production fromLonghornandLonghorn

PhaseII(both75%operated).• Production starts up at Thunderhawkfield(eni25%).• eni participates in discoveries atHeidelberg(12.5%), appraisalwellsatHadrian (25%),andKodiak(25%).•ParticipatesinSt.Malo tobedevelopedas Jack/St.Maloproject.

Alaska:• eniholdsinterestsin172 leasesinAlaskaofwhich 89arelocatedinfederal offshore waters of the Beaufort Sea and Chukchi Seaand83arestate onshoreleases.

Barnett Shale – Onshore Texas:• eniacquiresa27.5%interest fromQuicksilverResources Inc.intheAlliancearea,Fort WorthBasin,Texas.•Alliancemarkseni’sfirst

entryintoanonshoreUS unconventionalgasplay.

| 2010• eni production in the US amountstojustover 100,000boe/daywith72% inDeepwaterGOM,14% inShelfGOM,7%inBarnett Shale(onshoreTexas)and 7%inAlaska.eni operates approximately65%ofits equityproduction.

GOM: • eniholdsinterestin355 leasesinGOM(266in Deepwaterand89Shelf).• Commenced Triton developmentwell (operated75%).•ParticipatedinHeidelberg appraisalwell(12.5%).•RigonlocationforHadrian Northwell(25%);Hadrian developmentprogressed(25%).•Jack/St.MaloProject sanctionedfordevelopment.

Alaska:• eniholdsinterestsin151 leasesinAlaska,89are

eni leasehold

eni operated eni non-operated

fields

oil gas

eni leasehold

eni operated

eni non-operated

deepwater fields

oil gas

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locatedinFederaloffshore waters of the Beaufort Sea andChukchiSea,62are Stateonshoreleases.•Continueddevelopment drillingatOoogurukfield, Alaska(30%).•Concludedinstallationand commissioningoffacilities atNikaitchuqfieldin preparationforearly2011 productionstart-up(100% operated).Development drillingcontinuesat Nikaitchuqfield.•SealiftNikaitchuqprocess modulesfromLouisiana toAlaska’sNorthSlope.• eniisthefirstmajoroil companytoown100%of aNorthSlopeproduction facility-Nikaitchuqfield.

Barnett Shale - Onshore Texas:•Increasedleasehold positioninAllianceProject throughexerciseofAMI opportunities.

| 2011 GOM:

•DiscoveryatHadrian NorthProspect,KC919.• eniparticipatesfor25% WIinfirstexploratorywell atHadrianNorthsincethe GOMdrillingmoratorium waslifted.ExxonMobil operatestheprojectwith 50%WIandPetrobras participateswith25%WI.•Firstoilproductionfrom eni’s100%ownedAppaloosa fieldlocatedinMC459,460 and portions of 503 and 504.Appaloosaproduces from the eni operated (75%)Corral.• eniacquiresinterestinleases offsettingHadrianNorth blocksthroughunitization ofHadrianNorth(KC919) andLucius(Anadarko operated)withcross assignment between the partiesinallleases.•HadrianSouth/Lucius PHA: Hadrian South

(KC919,963&964)owners (ExxonMobiloperator, eni 30%)enteredintoaProduction HandlingAgreementwith Luciuswherebygasproduced fromtheHadrianSouthfield willbeprocessedthroughthe plannedLuciussparfacility.• enisanctionsLuciusProject.•Successfulcompletionofthe Triton#2developmentwell which was spud pre-Macondo andthensuspended.Welltied backtoDevil’sTowerSpar. First production from the wellinOctober2011 (enioperates75%).

Alaska: •Firstoilflowedfrom Nikaitchuqfieldonshore inJanuary–threeyearsafter projectsanction.Thefieldis expectedtoyield220million barrelsofoilover30years.•Firstoilflowsfromoffshore SpyIslandinNikaitchuq fieldinNovember.

| 2012 GOM:

•FirstoilfromDevilsTower SouthwestinMarch,2012.•Completedcontractfor DiamondOceanVictory semisubmersibledrillingrig (waterdepthcapability6,500’) for1yearwith41-yearoptions.•Plansfor10majordeepwater developmentoperations (3operated)and3major deepwaterexploration operations(1operated)along with5shelfdevelopment operations.

Alaska:•NikaitchuqProjectonAlaska’s NorthSlopeplansfor17wells (7onshoreand10offshore) andtheconclusionofonshore developmentdrilling.

Barnett Shale - Onshore Texas:• eni’snetproductioninthe projectreached9,600boed.

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| 2013 GOM:

• eni sanctioned MedusaRedevelopment (eni25%),EuropaA9 Project(eni32%) andHeidelbergProject (eni12.5%).• eni sanctionedLonghorn PhaseIII(eniop.100%), asinglewellprogramtied backtotheexistingCorral Platformviaexisting Longhornsubsea infrastructure,aimedto increasetherecoverable reservesofthefield.• eni sanctioned Pegasus PhaseII(eniop.85%) inMarch2013,aimingto increaserecoverable reserveswithasinglesubsea welltie-back.eni succeeded inhavingthefirstoilon October2013,asplanned.• enioperatedfirstexploration well(OddJobMC214)post Macondo and participated in firstNorphletwell(Swordfish).• eni’sHealth,Safety,and Environment Management System(HSEMS)hasbeen found to be in conformance with the requirements set forthbyISO14001:2004 andOHSAS18001:2007 internationalstandards and is granted the respective certifications.

Leon Valley-Onshore Texas:• eniconcludestransaction withQuicksilverinPecos County,Texastoacquire 50%workinginterestin95 leasescoveringapproximately 61,000acresinthePermian BasininWestTexasfor anunconventionaloilplay opportunityinBoneSprings.

Alaska:• eni continued with the Nikaitchuqfield DevelopmentDrilling includingMulti-Laterals toimproveproduction.

| 2014 GOM:

•Firstoilfromoperated LonghornPhaseIII inFebruary2014.•FirstoilfromEuropa A8andA9Project(eni32%).• eni participated in two deepwaterExploration wells;HolyCross(operated) andK2Wilcox (non-operated).• enisuccessfullynegotiates an increase of working interestatLuciusfrom 5.4%to8.5%duringreserves redeterminationperiod.• enienteredintoaUnitization and Participation Agreement covering the Vernaccia

Prospect.eni was designated asinitialoperatorofthejoint venturearea.eniwilldrillthe initialexploratorywellin2015.

Leon Valley-Onshore Texas:• eni participated in four unconventionaloilwells ofwhich3werecompleted andarecurrentlyproducingoil.

Alaska:• eniachieved25,000 Bbls/dayproduction milestoneatNikaitchuq.

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enihasbeenoperatingintheUSsincethelate1960’sandcarriesoutoilandnaturalgasexplorationandproductionunder the name of eni petroleum.

eni petroleumhasofficesinHouston,TXandAnchorage,AKandashorebaseinPortFourchon,LA,aswellasinterestsinnumerousshelfanddeepwaterfieldsintheGulfofMexico(GOM),NorthSlopeofAlaskaandnon-operatedactivitiesintheshaleoilandgasinWestTexas.Nethydrocarbonproductionhasgrownsignificantlyinrecentyearstoaproductioninexcessof100,000barrelsofoilequivalentperday.

eni petroleum is committed to achieving an incident free workplaceandcreatingaproactiveculturethatvaluesthehealthandsafetyofemployeesandcontractors,protectstheenvironmentandprovidessafetyassurancetostakeholders.

Inaddition,eni’sHSEmanagementsystemhasbeencertifiedinaccordancewiththeinternationallyrecognizedenvironmentalmanagementsystemstandards,ISO14001:2004andOHSAS18001:2007,oneofthefirstsuchawardsintheupstreamenergysectorintheUS.

eni petroleumiscommittedtoprovidingqualityinallaspectsofbusiness,companygrowth,valuedelivery,efficiency,andoutstandingHSEperformance.

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eni spaPiazzaleEnricoMattei,100144Rome-ItalyPh.:+39.06.598.21Fax:+39.06.598.221.41eni.com

Since 2010 eni has been communicating through arttotalentedpeoplearoundtheworldinvariousdisciplines.

ThecoverartismadebyJaredNickerson,aSeattle-basedillustratoranddesigner.Hisspecializationisinvectorillustrationwhich,thankstoitsversatility,canbeusedforallkindsofproducts.

eni at a glanceeniisanintegratedcompanyengagedinalltheenergysupplychain,activein85countrieswithmorethan85,000employees.

eniengagesinoilandnaturalgasexploration,fielddevelopmentandproduction,aswellasinthesupply,tradingandshippingofnaturalgas,LNG,electricity,fuelsandchemicalproducts.

Throughrefineriesandchemicalplants,eniprocessescrudeoilandotheroil-basedfeedstocktoproducefuels,lubricantsandchemicalproductsthataresuppliedtowholesalersorthroughretailnetworksordistributors.

enioperatesinengineering,oilfieldservicesandconstructionbothoffshoreandonshore,focusingontheexecutionoftechnologically-advancedmega-projectsmainlylocatedinfrontierareas.

eni’sstrategies,resourceallocationprocessesandconductingofday-by-dayoperationsunderpinthedeliveryofsustainablevaluetoallofourstakeholders,respectingthecountrieswherethecompanyoperatesandthepeoplewhoworkforandwitheni.Ourwayofdoingbusiness,basedonoperationalexcellence,focusonhealth,safetyandtheenvironment,iscommittedtopreventingandmitigatingoperationalrisks.

Whenimplementingitsstrategyandrunningitsday-to-dayoperations,eni’seffortsareinspiredbythesekeydrivers:cooperation,integration,innovation,excellence,inclusionandresponsibility.In2014eniconfirmeditspresenceintheDowJonesSustainabilityindicesandintheFTSE4Goodindex.

main figures for 2013•Netprofit:€5,160million•Cashflowfromoperations:€10,969million•Dividendspaidtoshareholders:€3,949million•Netborrowings:€15,428million•Leverage:0.25•Hydrocarbonreserves:6.54billionboe•Hydrocarbonproduction:1,619kboe/day•Worldwidegassale:93.17bcm•RetailsalesinEurope:9.69mmtonnes•ServicestationsinEurope:6,386

eni petroleumco.inc.1200SmithStreet,Suite1700Houston,Texas77002-USAPh.:+1.713.393.610.0Fax:+1.713.393.620.5 visit eni.com