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Storage Appraisal - Appendix A4.1 - Pressure Buildup During CO2 Injection into a Closed Brine Aquifer


Citation Mathias, S.A., González Martinez de Miguel, G.J., Thatcher, K.E. and Zimmerman, R.W. Storage Appraisal - Appendix A4.1 - Pressure Buildup During CO2 Injection into a Closed Brine Aquifer, ETI, 2011. https://doi.org/10.1007/s11242-011-9776-z.
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Author(s) Mathias, S.A., González Martinez de Miguel, G.J., Thatcher, K.E. and Zimmerman, R.W.
Project partner(s) RPS Energy Ltd, Senergy (Lead Coordinator), British Geological Survey, Durham University, Herriot Watt University, Imperial College, University of Edinburgh, Element Energy, Geopressure Technology, Geospatial Research Ltd , Senergy - DB hosting
Publisher ETI
DOI https://doi.org/10.1007/s11242-011-9776-z
Download CCS_CC1001_11.pdf document type
Abstract This document is a supporting document to deliverable MS6.1 UK Storage Appraisal Final Report. It contains Appendix 4.1: Pressure Buildup during CO2 injections into a closed brine aqiofer, and was published as:

Mathias, S.A., González Martínez de Miguel, G.J., Thatcher, K.E, Zimmerman, R.W. (2011).Pressure Buildup During CO2 Injection into a Closed Brine Aquifer. Transp Porous Med, 89: 383–397

CO2 injected into porous formations is accommodated by reduction in the volume of the formation fluid and enlargement of the pore space, through compression of the formation fluids and rock material, respectively. A critical issue is how the resulting pressure buildup will affect the mechanical integrity of the host formation and caprock. Building on an existing approximate solution for formations of infinite radial extent, this article presents an explicit approximate solution for estimating pressure buildup due to injection of CO2 into closed brine aquifers of finite radial extent. The analysis is also applicable for injection into a formation containing multiple wells, in which each well acts as if it were in a quasi-circular closed region. The approximate solution is validated by comparison with vertically averaged results obtained using TOUGH2 with ECO2N (where many of the simplifying assumptions are relaxed), and is shown to be very accurate over wide ranges of the relevant parameter space. The resulting equations for the pressure distribution are explicit, and can be easily implemented within spreadsheet software for estimating CO2 injection capacity.
Associated Project(s) ETI-CC1001: UK Storage Appraisal Project (UKSAP)
Associated Dataset(s) No associated datasets
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