Record Details
Pore-scale observations of supercritical CO₂ drainage in Bentheimer sandstone by synchrotron x-ray imaging
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Pore-scale observations of supercritical CO₂ drainage in Bentheimer sandstone by synchrotron x-ray imaging |
| Names |
Herring, Anna L.
(creator) Andersson, Linnea (creator) Newell, D. L. (creator) Carey, J. W. (creator) Wildenschild, Dorthe (creator) |
| Date Issued | 2014-06 (iso8601) |
| Note | To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/international-journal-of-greenhouse-gas-control. |
| Abstract | This work utilizes synchrotron-based x-ray computed microtomography (x-ray CMT) imaging to quantify the volume and topology of supercritical carbon dioxide (scCO₂) on a pore-scale basis throughout the primary drainage process of a 6 mm diameter Bentheimer sandstone core. Experiments were performed with brine and scCO₂ at 8.3 MPa (1200 psi) and 37.5°C. Capillary pressure–saturation curves for the scCO₂-brine system are presented and compared to the ambient air-brine system, and are shown to overlay one another when pressure is normalized by interfacial tension. Results are analyzed from images with a voxel resolution of 4.65 μm; image-based evidence demonstrates that scCO₂ invades the pore space in a capillary fingering regime at a mobility ratio M = 0.03 and capillary number Ca = 10[superscript −8.6] to an end-of-drainage brine saturation of 9%. We provide evidence of the applicability of previous two-dimensional micromodel studies and ambient condition experiments in predicting flow regimes occurring during scCO₂ injection. |
| Genre | Article |
| Topic | Supercritical CO₂ |
| Identifier | Herring, A. L., Andersson, L., Newell, D. L., Carey, J. W., & Wildenschild, D. (2014). Pore-scale observations of supercritical CO₂ drainage in Bentheimer sandstone by synchrotron x-ray imaging. International Journal of Greenhouse Gas Control, 25, 93-101. doi:10.1016/j.ijggc.2014.04.003 |
