Stepping into the Same River Twice: Field Evidence for the Repeatability of a CO2 Injection Test. (July 2017)

• Record Type: Journal Article
• Authors: Ennis-King, J.; LaForce, T.; Paterson, L.; Black, J.R.; Vu, H.P.; Haese, R.R.; Serno, S.; Gilfillan, S.; Johnson, G.; Freifeld, B.; Singh, R.
• Is Part Of: Energy procedia. Volume 114(2017)
• Page Start: 2760
• Page End: 2771
• Publication Date: 2017-07
• Subjects: CO2 storage -- residual saturation -- field test -- permeability alteration -- geochemistry; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2017.03.1392
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: A single well characterisation test was conducted at the CO2CRC Otway storage site in Victoria, Australia, in 2011 and repeated in 2014. The near-well permeability was found to have declined nearly 60% since the 2011 test, while the residual saturation inferred from a variety of techniques was lower in 2014. There was a significant change in water chemistry, suggesting an alteration of near-well reservoir properties. Possible reasons for these changes are explored, and the implications for other field tests are discussed.