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CLIMIT-Forskning, utvikling og demo av CO2-håndtering

In-situ imaging of CO2 flow, storage and entrapment in subsurface aquifers and hydrocarbon reservoirs

Tildelt: kr 7,6 mill.

Collaboration between 7 Universities in France, UK, USA, Canada and Norway and 5 research and oil companies will emphasize research aimed at Goal #3 for the Climit Program Objectives; to contribute to safe long term CO2 storage. Emphasis will be on experi mental verification of CO2 flow and CO2 storage in porous rocks by dynamic in-situ fluid saturation imaging (MRI and nuclear tracer imaging) of 1)CO2 trapping mechanisms in aquifers 2)CO2 trapping in oil reservoirs 3)CO2 trapping by hydrate layers, 4)Impa cts on leakage from heterogeneities and fractures, 5)Capillary entrapments, 6)CO2-rock interactions and compaction and 7)Interaction of technology for CO2 in EOR combined with methods for long term CO2 sequestration. Improved understanding of CO2 based EO R will be obtained by the use of complementary in-situ imaging techniques, applying nuclear tracer imaging and high spatial resolution MRI in core plugs and larger blocks of rock of various sizes, combined with numerical simulations of the experiments. Th e modelling work will, in addition to production history matching, be performed with detailed simulation of in-situ fluid movements and front propagations; to improve the validation of the numerical models and reveal how CO2 flows in porous rocks. Pore sc ale modelling will be used for fluid flow in aquifers and in oil reservoirs. Improved understanding of CO2 sequestration and improved oil recovery by CO2 injection will be obtained by interaction between the combined effects on the in-situ oil recovery me chanisms during sequentially CO2 stimulated production followed by CO2 storage. Visualization of in-situ CO2 flow and CO2 storage to determine CO2 migration in different rocks at different initial saturations of water and /or hydrocarbons; at different pr essure and temperature conditions, will provide new fundamental knowledge about how CO2 safely can be stored in subsurface porous rocks.

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CLIMIT-Forskning, utvikling og demo av CO2-håndtering