Dissolution Kinetics of Keg River dolomites and implications for spectra energy's Fort Nelson CCS project

Peter Crockford, Kevin Telmer
2011 Energy Procedia  
The government of British Columbia and Spectra Energy are partnering to explore the potential of CCS in British Columbia to reduce emissions from Spectra Energy's Fort Nelson gas processing facility. This work is part of a site characterization study, which aims to assess the viability of such a project in the province. Dissolution rates of Keg River carbonates immersed in Keg River brines collected in May 2009 were measured. Experimental conditions simulating injection and formation conditions
more » ... were CO 2 at 50 bar and 105°C. Results are higher but within an order of magnitude of literature values at similar pressure temperature conditions with values of Log R up to -8.45 mol⋅cm -2 ⋅s -1 . Experiments showed a strong effect of rock and fluid composition on reaction kinetics. The same experimental materials and conditions but using a synthetic 0.1M NaCl brine produced elevated reaction rates, potentially due to a lack of compositional inhibition that are caused by more complex mixtures. A full reactive transport simulation using these results would help constrain the spatial extent dissolution throughout the saline formation being considered for injection.
doi:10.1016/j.egypro.2011.02.402 fatcat:ky5ihzg2lbhofbdbtlr3pcpcwq