Modelling of Kinetic Interface Sensitive Tracers for Two-Phase Systems

Tatomir, Alexandru; Maier, Friedrich; Schaffer, Mario; Licha, Tobias; Sauter, Martin

doi:10.1007/978-3-642-37849-2_6

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…The mathematical model is implemented in COMSOL Multiphysics™. Several models capable of addressing the KIS tracers in multiphase flow in porous-media systems were developed in the past (Tatomir et al, 2013(Tatomir et al, , 2015(Tatomir et al, , 2018Tatomir, Halisch, et al, 2016;Tatomir, Jyoti, & Sauter, 2016). Besides the immiscible two-phase flow models, a compositional model investigating the KIS tracer application in supercritical CO 2 brine fluid systems was developed in the DuMu X simulator (Flemisch et al, 2011;Tatomir et al, 2015).…”

Section: Mathematical Modeling and Interpretation Of The Resultsmentioning

confidence: 99%

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Tatomir,

Gao,

Abdullah

et al. 2023

Water Resources Research

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By employing kinetic interface sensitive (KIS) tracers, we investigate three different types of glass‐bead materials and three natural porous media systems to quantitatively characterize the influence of the porous‐medium grain‐, pore‐size and texture on the specific capillary‐associated interfacial area (FIFA) between an organic liquid and water. By interpreting the breakthrough curves (BTCs) of the reaction product of the KIS tracer hydrolysis, we obtain a relation for the specific IFA and wetting phase saturation. The immiscible displacement process coupled with the reactive tracer transport across the fluid–fluid interface is simulated with a Darcy‐scale numerical model. Linear relations between the specific capillary‐associated FIFA and the inverse mean grain diameter can be established for measurements with glass beads and natural soils. We find that the grain size has minimal effect on the capillary‐associated FIFA for unconsolidated porous media formed by glass beads. Conversely, for unconsolidated porous media formed by natural soils, the capillary‐associated FIFA linearly increases with the inverse mean grain diameter, and it is much larger than that from glass beads. This indicates that the surface roughness and the irregular shape of the grains can cause the capillary‐associated FIFA to increase. The results are also compared with the data collected from literature, measured with high resolution microtomography and partitioning tracer methods. Our study considerably expands the applicability range of the KIS tracers and enhances the confidence in the robustness of the method.

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Section: Mathematical Modeling and Interpretation Of The Resultsmentioning

confidence: 99%

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Tatomir,

Gao,

Abdullah

et al. 2023

Water Resources Research

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“…Joekar-Niasar et al (2008) used pore-scale network models to generate computationally − − surfaces. These can be approximated by using polynomial expression [23], [24]:…”

Section: Mathematical and Numerical Modelmentioning

confidence: 99%

Modelling of kinetic interface sensitive tracers reactive transport in 2D two-phase flow heterogeneous porous media

et al. 2019

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Fluid-fluid interfacial area plays an important role for mass- and energy-transfer processes across the interface which is relevant in several hydrogeological and engineering applications, e.g. enhanced oil-gas recovery, CO2 storage in geological formations, unconventional geothermal systems, contaminant removal, etc. Kinetic interface sensitive tracers were designed to determine the size of the interface between two fluids by undergoing hydrolysis at the fluid-fluid interface. This study investigates by means of numerical modelling the influence of heterogeneity on the KIS tracer breakthrough curves in six idealized scenarios (S1-S6). It is an extension of the previous work conducted in “one-dimensional” column experiments by Tatomir et al. (2018) [1]. The changes in interfacial area are created by inclusion of heterogeneities at the Darcy-scale. The results show that KIS tracers can be used in two-dimensional experimental setup and can provide information about the size and dynamic evolution of interfacial area. Therefore, this is a first step for the dimensioning of an experimental flume.

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“…Detection and quantification of the CO 2 -brine fluid-fluid interface could be realized using kinetic interface sensitive (KIS) tracers as described in Schaffer et al (2013). Several mathematical models for immiscible 2-phase flow and KIS tracer transport in porous media were developed in Tatomir et al (2013Tatomir et al ( , 2014 and Tatomir et al (2015), whereas the latter also considers compositional effects. In Tatomir et al (2015) a 2-phase four -component flow and transport model is realized with a kinetic mass transfer of tracers between the two fluids, taking the dissolution of CO 2 and brine into account.…”

mentioning

confidence: 99%

“…The modelling approaches by Tatomir et al (2013Tatomir et al ( , 2014 and Tatomir et al (2015) require the a priori knowledge of the fluid-fluid-solid system-specific p c -S w -a wn constitutive relationship (Tatomir et al, 2013).…”

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confidence: 99%

Development of a numerical workflow based on <i>μ</i>-CT imaging for the determination of capillary pressure–saturation-specific interfacial area relationship in 2-phase flow pore-scale porous-media systems: a case study on Heletz sandstone

Peche¹,

Halisch²,

Tatomir³

et al. 2016

Solid Earth

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Abstract. In this case study, we present the implementation of a finite element method (FEM)-based numerical porescale model that is able to track and quantify the propagating fluid-fluid interfacial area on highly complex microcomputed tomography (µ-CT)-obtained geometries. Special focus is drawn to the relationship between reservoir-specific capillary pressure (p c ), wetting phase saturation (S w ) and interfacial area (a wn ). The basis of this approach is highresolution µ-CT images representing the geometrical characteristics of a georeservoir sample. The successfully validated 2-phase flow model is based on the Navier-Stokes equations, including the surface tension force, in order to consider capillary effects for the computation of flow and the phase-field method for the emulation of a sharp fluid-fluid interface.In combination with specialized software packages, a complex high-resolution modelling domain can be obtained. A numerical workflow based on representative elementary volume (REV)-scale pore-size distributions is introduced. This workflow aims at the successive modification of model and model set-up for simulating, such as a type of 2-phase problem on asymmetric µ-CT-based model domains. The geometrical complexity is gradually increased, starting from idealized pore geometries until complex µ-CT-based pore network domains, whereas all domains represent geostatistics of the REV-scale core sample pore-size distribution. Finally, the model can be applied to a complex µ-CT-based model domain and the p c -S w -a wn relationship can be computed.

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Modelling of Kinetic Interface Sensitive Tracers for Two-Phase Systems

Cited by 5 publications

References 13 publications

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Modelling of kinetic interface sensitive tracers reactive transport in 2D two-phase flow heterogeneous porous media

Development of a numerical workflow based on <i>μ</i>-CT imaging for the determination of capillary pressure–saturation-specific interfacial area relationship in 2-phase flow pore-scale porous-media systems: a case study on Heletz sandstone

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Modelling of Kinetic Interface Sensitive Tracers for Two-Phase Systems

Cited by 5 publications

References 13 publications

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Estimation of Capillary‐Associated NAPL‐Water Interfacial Areas for Unconsolidated Porous Media by Kinetic Interface Sensitive (KIS) Tracer Method

Modelling of kinetic interface sensitive tracers reactive transport in 2D two-phase flow heterogeneous porous media

Development of a numerical workflow based on &lt;i&gt;μ&lt;/i&gt;-CT imaging for the determination of capillary pressure–saturation-specific interfacial area relationship in 2-phase flow pore-scale porous-media systems: a case study on Heletz sandstone

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Development of a numerical workflow based on <i>μ</i>-CT imaging for the determination of capillary pressure–saturation-specific interfacial area relationship in 2-phase flow pore-scale porous-media systems: a case study on Heletz sandstone