Potential for CO Storage in Depleting Oil and Gas Reservoirs ... - Zero

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Potential for CO Storage in Depleting Oil and Gas Reservoirs ... - Zero

Potential for CO 2 Storage in Depleting Oiland Gas Reservoirs in DenmarkMichael Engell-JensenSenior Vice President, Carbon & ClimateOctober 22, 2009


October 24, 20092CO 2 Storage Capacity• More than 750 million tonnes of CO 2 are emitted annually from largestationary sources relatively close to the North Sea• Much of the North Sea geology is potentially suitable for CO 2 storage, butsaline aquifers need exploration, appraisal and development• Certain UK, Norwegian and Danish oil/gas fields are suitable for storage andenhanced recovery techniquesSource: GESTCO


October 24, 20093CO 2 Storage EconomicsStorage(10-25%)(0.5-1.75 $/mscf)Source: Deutsche BankTransport(20-30%)(1-2.1 $/mscf)Source: Booz & Co.Capture(50-60%)(2.4-4.2 $/mscf)


October 24, 20094CO 2 Storage Trilemma:- The 3 C’sContainmentDepletedGas FieldsDepletingGas FieldsEORCapacitySaline aquifersInjectivity(Cost)


October 24, 20095Commercial CO 2 DemandSource: IPCC Special Report on CCS


October 24, 20096Maersk Oil North Sea Licenses


October 24, 20097Maersk Oil Denmark• 50 platforms• 1 subsea completion• 65 pipelines – approx. 800km• 182 oil production wells• 68 gas production wells• 17 gas injection wells• 94 water injection wells• Some 700 onshore employees• Some 500 offshore employeesand 1000 contractors


October 24, 20098CO2 EOR as an Abatement Technology• Advantages• Challenges1. Reduces CCS costs2. Accelerates implementation3. Reduces geological risks4. Provides energy security5. Provides revenues to society1. Uses additional energy2. Oil recovery risks exists3. Increased implementation costs4. Potentially added transport costs5. Long-term liability6. Uses current infrastructure7. Offshore risks are low8. Oil & Gas regulations exist


October 24, 20099How CO2 EOR worksSource: US DoE NETL


Carbon Balance – Existing (Plant to Grid)24MMt CoalPower PlantAtmosphere60MMt CO 2Over a 20 year periodElectricity to grid75GWhCO 2 Emissions Intensity = 0.8kg CO2/kWh


Carbon Balance – CCS (Saline Aquifer)Atmosphere12MMt CO 230MMt CoalPower PlantCO 2Capture4MMt CO 2Geologically Stored58MMt CO 2Electricity to grid75GWhOver a 20 year periodCO 2 Emissions Intensity = 0.2kg CO2/kWhAbatement Efficiency = 75%


Carbon Balance – CCS (EOR & Storage)Atmosphere12MMt CO 230MMt CoalPower PlantCO 2Capture4MMt CO 24.3 MMt CO 2Geologically Stored58MMt CO 2Electricity to grid75GWhOil to market255GWh63 MMt CO 2Over a 20 year periodCO 2 Emissions Intensity = 0.25kg CO2/kWhAbatement Efficiency = 69%


October 24, 200913Thank you.

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