Journal of Canadian Petroleum Technology
Volume 49, Number 8, August 2010, pp. 15-22

SPE-139429-PA

Simulation and Optimization of Trapping Processes for CO2 Storage in Saline Aquifers

View full textPDF ( 1,303 KB )

DOI  More information 10.2118/139429-PA http://dx.doi.org/10.2118/139429-PA

Citation

  • Nghiem, L., Shrivastava, V., Kohse, B., Hassam, C., and Yang, C. 2009. Simulation and Optimization of Trapping Processes for CO2 Storage in Saline Aquifiers. J Can Pet Technol49 (8): 15-22. SPE-139429-PA. doi: 10.2118/139429-PA.

Discipline Categories

  • 6.11.1 CO2 Sequestration
  • 6.5 Reservoir Simulation

Keywords

  • CO2 storage, trapping mechanism, saline aquifers

Summary

This paper describes the modeling of the main processes for CO2 trapping in saline aquifers, namely solubility trapping, residual gas trapping and mineral trapping. Several important aspects of CO2 storage are presented. It has been found that the total amount of CO2 trapped as a soluble component, and as residual gas, can be enhanced by injecting brine above the CO2 injector. An optimization technique is used to adjust the location and rate of the brine injector to maximize the total amount of CO2 trapping. The security of the trapping process is then evaluated by taking into account the leakage of mobile CO2 through the caprock. For long-term CO2 storage, the conversion of CO2 into minerals is found to depend on the pre-existing minerals in the aquifer that provide the necessary ions for the reactions to occur.

© 2010. Society of Petroleum Engineers

View full textPDF ( 1,303 KB )

History

  • Original manuscript received: 2 April 2009
  • Meeting paper published: 17 June 2009
  • Revised manuscript received: 28 April 2010
  • Manuscript approved: 1 May 2010
  • Published online: 4 August 2010
  • Version of record: 3 August 2010