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dc.contributor.authorKim, Seunghee
dc.contributor.authorSantamarina, Carlos
dc.date.accessioned2015-08-23T10:33:12Z
dc.date.available2015-08-23T10:33:12Z
dc.date.issued2015-09-19
dc.identifier.citationGeometry-coupled reactive fluid transport at the fracture scale -Application to CO 2 geologic storage 2015:n/a Geofluids
dc.identifier.issn14688115
dc.identifier.doi10.1111/gfl.12152
dc.identifier.urihttp://hdl.handle.net/10754/575506
dc.description.abstractWater acidification follows CO2 injection and leads to reactive fluid transport through pores and rock fractures, with potential implications to reservoirs and wells in CO2 geologic storage and enhanced oil recovery. Kinetic rate laws for dissolution reactions in calcite and anorthite are combined with Navier-Stokes law and advection-diffusion transport to perform geometry-coupled numerical simulations in order to study the evolution of chemical reactions, species concentration and fracture morphology. Results are summarized as a function of two dimensionless parameters: the Damköhler number Da which is the ratio between advection and reaction times, and the transverse Peclet number Pe defined as the ratio between the time for diffusion across the fracture and the time for advection along the fracture. Reactant species are readily consumed near the inlet in a carbonate reservoir when the flow velocity is low (low transverse Peclet number and Da>10-1). At high flow velocities, diffusion fails to homogenize the concentration field across the fracture (high transverse Peclet number Pe>10-1). When the reaction rate is low as in anorthite reservoirs (Da<10-1) reactant species are more readily transported towards the outlet. At a given Peclet number, a lower Damköhler number causes the flow channel to experience a more uniform aperture enlargement along the length of the fracture. When the length-to-aperture ratio is sufficiently large, say l/d>30, the system response resembles the solution for 1-D reactive fluid transport. A decreased length-to-aperture ratio slows the diffusive transport of reactant species to the mineral fracture surface, and analyses of fracture networks must take into consideration both the length and slenderness of individual fractures in addition to Pe and Da numbers.
dc.language.isoen
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.1111/gfl.12152
dc.rightsThis is the peer reviewed version of the following article: Kim, Seunghee, and J. Carlos Santamarina. "Geometry-coupled reactive fluid transport at the fracture scale-Application to CO2 geologic storage." Geofluids (2015), which has been published in final form at http://doi.wiley.com/10.1111/gfl.12152. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectCO2 geologic storage
dc.subjectMineral dissolution
dc.subjectReactive fluid transport
dc.subjectRock fracture
dc.subjectNavier-Stokes law
dc.titleGeometry-coupled reactive fluid transport at the fracture scale -Application to CO 2 geologic storage
dc.typeArticle
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentEnergy Resources and Petroleum Engineering
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalGeofluids
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Civil and Environmental Engineering; Western New England University; Springfield Massachusetts USA
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personSantamarina, Carlos
refterms.dateFOA2016-08-19T00:00:00Z
dc.date.published-online2015-09-19
dc.date.published-print2016-05


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