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Impact Of CO2-WAG Design Optimisation On Coupled CO2-EOR And Storage Projects In Carbonate ReservoirsGreen Open Access

Authors: H. Rodrigues, E. Mackay and D. Arnold
Event name: Fifth CO2 Geological Storage Workshop
Session: Session 6: Demonstration Cases and The Future
Publication date: 21 November 2018
DOI: 10.3997/2214-4609.201802994
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.28Mb )

Summary:
CO2-WAG injection has been applied in offshore Brazilian carbonate reservoirs aiming to improve oil recovery and promote a safe destination to CO2 naturally being produced alongside with hydrocarbon gas. A gas re-utilisation strategy can potentially lead to multiple benefits: residual oil saturation reduction, maintenance of reservoir pressure, avoidance of gas flaring and development of the infrastructure and expertise necessary to make CO2 storage more accessible once oil production is complete, paving the path for a low carbon future, whereas mature basins can be a potential hub for Carbon Capture, Utilisation and Storage (CCUS). This study aims to develop a methodology to design CO2-WAG projects that not only achieve a high Net Present Value (NPV) but also maximizes the capacity and safety of geological CO2 storage.

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