Offshore transport, conditioning and storage of Carbon Dioxide
A comprehensive method to evaluate the suitability of existing offshore infrastructure for the transport and storage of carbon dioxide
C.P.W. Christiaanse (TU Delft - Mechanical Engineering)
Bendiks-Jan Boersma – Mentor
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Abstract
This report presents the first simple and comprehensive method to effectively compare different infrastructure configurations for reservoirs that have been found suitable for long-term storage of carbon dioxide. Modelling the different transport phenomena along the chain, this study identified a fixed set of input parameters and used them to evaluate the differences between existing and new infrastructure. The report then explores how these differences affect the conditioning steps the CO2 must undergo before injection.The model was then applied to a a test case, the P18-2 natural gas reservoir 30km north-west of the Hague. The results for this test case show that an auxiliary pumping step is required for supercritical injection at the desired pressure. Subsequently, the results are used to develop a conceptual design for a module that can either be installed on a new platform or retrofitted to existing offshore production facilities, allowing them to be used for conditioning and injection of CO2. Last, the economic feasibility analysis demonstrates that reusing existing infrastructure can reduce the costs of transport and storage of CO2 by over 50%.