Technical Note. The Concept of a Computer System for Interpretation of Tight Rocks Using X-Ray Computed Tomography Results

Habrat, Magdalena; Krakowska, P.; Puskarczyk, Edyta; Jędrychowski, Mariusz; Madejski, Paweł

doi:10.1515/sgem-2017-0010

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…Using binarization (threshold method), the pore space was extracted from the image and filtrated against the noise. The second stage was connected with the qualitative and quantitative interpretation of the pore space using poROSE software (poROus materials examination SoftwarE, AGH University of Science and Technology, Kraków, Poland) [29,30]. The scheme of the CT analysis is presented in Figure 1.…”

Section: Computed X-ray Tomography (Ct)mentioning

confidence: 99%

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

Krakowska

Madejski

2019

Energies

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The paper presents results of fluid flow simulation in tight rock being potentially gas-bearing formation. Core samples are under careful investigation because of the high cost of production from the well. Numerical simulations allow determining absolute permeability based on computed X-ray tomography images of the rock sample. Computational fluid dynamics (CFD) give the opportunity to use the partial slip Maxwell model for permeability calculations. A detailed 3D geometrical model of the pore space was the input data. These 3D models of the pore space were extracted from the rock sample using highly specialized software poROSE (poROus materials examination SoftwarE, AGH University of Science and Technology, Kraków, Poland), which is the product of close cooperation of petroleum science and industry. The changes in mass flow depended on the pressure difference, and the tangential momentum accommodation coefficient was delivered and used in further quantitative analysis. The results of fluid flow simulations were combined with laboratory measurement results using a gas permeameter. It appeared that for the established parameters and proper fluid flow model (partial slip model, Tangential Momentum Accommodation Coefficient (TMAC), volumetric flow rate values), the obtained absolute permeability was similar to the permeability from the core test analysis.

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Section: Computed X-ray Tomography (Ct)mentioning

confidence: 99%

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

Krakowska

Madejski

2019

Energies

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“…Zastosowano detektor firmy Hamamatsu HAM C 7942CA-02, który pozwolił uzyskać rozdzielczość obrazu 800 nm. Obrazy tomograficzne były interpretowane jakościowo i ilościowo przy wykorzystaniu programu poROSE (po-ROus materials examination SoftwarE) [3,7]. Program poROSE jest wynikiem prac badawczych prowadzonych wspólnie przez ośrodki naukowe i przemysłowe na materiałach porowatych.…”

Section: Materiał I Metodaunclassified

Parametry geometryczne przestrzeni porowej niskoporowatych piaskowców kambryjskich wyznaczone na podstawie wyników badań laboratoryjnych na próbkach z rdzeni wiertniczych

Krakowska

Krakowie

Puskarczyk

et al. 2018

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“…shale gas, tight sandstones, and tight carbonates). The geometrical model was reproduced using results of computer tomography technique (micro-CT) and developed tools and algorithms (poROSE software) for the analysis of the images of porous materials (Habrat et al , 2017; Krakowska et al , 2018b).…”

Section: Introductionmentioning

confidence: 99%

Permeability determination in tight rock sample using novel method based on partial slip modelling and X-ray tomography data

Madejski

Krakowska

Puskarczyk

et al. 2019

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Purpose The purpose of the paper was the application of computational fluid dynamics (CFD) techniques in fluid flow using Maxwell’s equation for partial slip modelling, estimating the flow parameters, and selecting tangential momentum accommodation coefficient (TMAC) for tight rock samples in permeability calculations. Design/methodology/approach The paper presents a numerical analysis of fluid flow in a low-porosity rock sample by using CFD. Modelling results allowed to determine mass flow rates in a rock sample and to calculate permeability values using a modified Darcy’s equation. Three-dimensional (3D) geometrical model of rock sample generated using computed X-ray tomography was used in the analysis. Steady-state calculations were carried out for defined boundary conditions in the form of pressure drop. The simulations were applied taking into account the slip phenomenon described by Maxwell’s slip model and TMAC. Findings Values of permeability were calculated for different values of TMAC, which vary from 0 to 1. Results in the form of gas mass flow rates were compared with the measured value of permeability for rock sample, which confirmed the high accuracy of the presented model. Practical implications Calculations of fluid flow in porous media using CFD can be used to determine rock samples’ permeability. In slip flow regime, Maxwell’s slip model can be applied and the empirical value of TMAC can be properly estimated. Originality/value This paper presents the usage of CFD, Maxwell’s equation for partial slip modelling, in fluid flow mechanism for tight rock samples. 3D geometric models were generated using created pre-processor (poROSE software) and applied in the raw form for simulation.

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Technical Note. The Concept of a Computer System for Interpretation of Tight Rocks Using X-Ray Computed Tomography Results

Cited by 10 publications

References 19 publications

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

Parametry geometryczne przestrzeni porowej niskoporowatych piaskowców kambryjskich wyznaczone na podstawie wyników badań laboratoryjnych na próbkach z rdzeni wiertniczych

Permeability determination in tight rock sample using novel method based on partial slip modelling and X-ray tomography data

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