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dc.contributor.authorVogt, Sarah J.
dc.contributor.authorShaw, C. A.
dc.contributor.authorManeval, James E.
dc.contributor.authorBrox, T. I.
dc.contributor.authorSkidmore, Mark L.
dc.contributor.authorCodd, Sarah L.
dc.contributor.authorSeymour, Joseph D.
dc.identifier.citationVogt SJ, Shaw CA, Maneval JE, Brox TI, Skidmore ML, Codd SL, Seymour JD, "Magnetic resonance measurements of flow-path enhancement during supercritical CO2 injection in sandstone and carbonate rock cores," Journal of Petroleum Science and Engineering, 2014 122: 507–514.en_US
dc.description.abstractSandstone and carbonate core samples were challenged with a two-phase supercritical CO2 and brine mixture to investigate the effects of chemical processes on the physical properties of these rocks during injection of CO2. The experiments were monitored in real-time for pressure, temperature, and volumetric rate discharge. Pore geometry and connectivity were characterized before and after each experimental challenge using magnetic resonance (MR) imaging and two-dimensional MR relaxation correlations. Quartz arenite sandstone cores were largely unaffected by the challenge with no measurable change in effective permeability at moderate and high temperatures (~50 °C and ~95 °C) or brine concentrations (~1 g/L and ~10 g/L). In contrast, a carbonate core sample showed evidence of significant dissolution leading to a six-fold increase in effective permeability. MR images and relaxation measurements revealed a marked increase in the volume and connectivity of pre-existing pore networks in the carbonate core. We infer that the increase in permeability in the carbonate core was enhanced by focused dissolution in the existing pore and fracture networks that enhanced fast-flow paths through the core.en_US
dc.description.sponsorshipU.S. Department of Energy (DE-FC26-04NT42262); U.S. DOE (DE-FG02-08ER46527); U.S. NSF MRI program; M.J. Murdock Charitable Trusten_US
dc.titleMagnetic resonance measurements of flow-path enhancement during supercritical CO2 injection in sandstone and carbonate rock coresen_US
mus.citation.journaltitleJournal of Petroleum Science and Engineeringen_US
mus.identifier.categoryChemical & Material Sciencesen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentMicrobiology & Immunology.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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