Micro-CT and FIB–SEM imaging and pore structure characterization of dolomite rock at multiple scales

Devarapalli, Rajakumar; Islam, Amina; Faisal, Fahad; Sassi, Mohamed; Jouiad, Mustapha

doi:10.1007/s12517-017-3120-z

Cited by 48 publications

(19 citation statements)

References 30 publications

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“…e FIB-SEM 3D tomography enables the direct observation of the three-dimensional microstructure at nanoscale resolution through the 3D reconstruction of the sequential sets of 2D images. Furthermore, owing to recent advances in imaging and computer technology, numerical simulation based on FIB-SEM 3D tomography technique is one of the most accurate [27,49,50], phase distribution, crystallographic interfaces, and defect arrangements [26]. However, the quantification errors in the microstructural parameters are inevitable because of the limited sample size and resolutions in the FIB-SEM observation, uncertainty in the image processing (e.g., alignment and segmentation), and the accuracy of the quantification method/model itself applied to the image data [51].…”

Section: D Reconstruction Of Fib-sem Sequential Cross-sectionalmentioning

confidence: 99%

“…erefore, currently, the most common and effective curtain-removal solution is adjusting the milling parameters according to the unique properties of each targeted material or polishing it before milling. Filling the internal pores with additional resin can help recognize the pore region [49,50].…”

Section: Potential Applications Of Fib-sem 3d Tomography In Carbon-bamentioning

confidence: 99%

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FIB-SEM Three-Dimensional Tomography for Characterization of Carbon-Based Materials

Nan

Wang

2019

Advances in Materials Science and Engineering

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A review on the recent advances of the three-dimensional (3D) characterization of carbon-based materials was conducted by focused ion beam-scanning electron microscope (FIB-SEM) tomography. Current studies and further potential applications of the FIB-SEM 3D tomography technique for carbon-based materials were discussed. The goal of this paper is to highlight the advances of FIB-SEM 3D reconstruction to reveal the high and accurate resolution of internal structures of carbon-based materials and provide suggestions for the adoption and improvement of the FIB-SEM tomography system for a broad carbon-based research to achieve the best examination performances and enhance the development of innovative carbon-based materials.

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Section: D Reconstruction Of Fib-sem Sequential Cross-sectionalmentioning

confidence: 99%

Section: Potential Applications Of Fib-sem 3d Tomography In Carbon-bamentioning

confidence: 99%

FIB-SEM Three-Dimensional Tomography for Characterization of Carbon-Based Materials

Nan

Wang

2019

Advances in Materials Science and Engineering

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“…The sequence of images obtained in successive layers can be assembled into a 3D image, similar to those resulting from X-ray CT tomography, and subsequently segmented ( Salzer et al, 2015 ; Liu et al, 2017 ). In the last few years, this approach has been used extensively to investigate the morphological characteristics of dolomite rocks, shales, and clays using BIB alone ( Houben et al, 2013 ), a combination of BIB- and FIB-SEM ( Hemes et al, 2015 ), or the joint use of micro-CT and FIB-SEM ( Devarapalli et al, 2017 ). In soils, FIB-SEM presents a tremendous potential, but its use appears to have been limited so far to observations of microbially induced calcite precipitation in sandy soils ( Li et al, 2017 ) and to obtain high-resolution images of the colonization of soil–root interfaces ( Vidal et al, 2018 ).…”

Section: Progress On the Physical Frontmentioning

confidence: 99%

Emergent Properties of Microbial Activity in Heterogeneous Soil Microenvironments: Different Research Approaches Are Slowly Converging, Yet Major Challenges Remain

et al. 2018

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Over the last 60 years, soil microbiologists have accumulated a wealth of experimental data showing that the bulk, macroscopic parameters (e.g., granulometry, pH, soil organic matter, and biomass contents) commonly used to characterize soils provide insufficient information to describe quantitatively the activity of soil microorganisms and some of its outcomes, like the emission of greenhouse gasses. Clearly, new, more appropriate macroscopic parameters are needed, which reflect better the spatial heterogeneity of soils at the microscale (i.e., the pore scale) that is commensurate with the habitat of many microorganisms. For a long time, spectroscopic and microscopic tools were lacking to quantify processes at that scale, but major technological advances over the last 15 years have made suitable equipment available to researchers. In this context, the objective of the present article is to review progress achieved to date in the significant research program that has ensued. This program can be rationalized as a sequence of steps, namely the quantification and modeling of the physical-, (bio)chemical-, and microbiological properties of soils, the integration of these different perspectives into a unified theory, its upscaling to the macroscopic scale, and, eventually, the development of new approaches to measure macroscopic soil characteristics. At this stage, significant progress has been achieved on the physical front, and to a lesser extent on the (bio)chemical one as well, both in terms of experiments and modeling. With regard to the microbial aspects, although a lot of work has been devoted to the modeling of bacterial and fungal activity in soils at the pore scale, the appropriateness of model assumptions cannot be readily assessed because of the scarcity of relevant experimental data. For significant progress to be made, it is crucial to make sure that research on the microbial components of soil systems does not keep lagging behind the work on the physical and (bio)chemical characteristics. Concerning the subsequent steps in the program, very little integration of the various disciplinary perspectives has occurred so far, and, as a result, researchers have not yet been able to tackle the scaling up to the macroscopic level. Many challenges, some of them daunting, remain on the path ahead. Fortunately, a number of these challenges may be resolved by brand new measuring equipment that will become commercially available in the very near future.

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“…However, in most cases, a part of the microscopic pore space could not be captured by NMR or micro-CT. This is where SEM imaging has been used for improving the result and also resolving the issues of the microporous phase in CT images [28][29][30]. Therefore, the existing models are based more on the intragranular pores rather than the precise pore space characteristic.…”

Section: Introductionmentioning

confidence: 99%

Fractal Properties of Various Clay Minerals Obtained from SEM Images

et al. 2021

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Clay minerals significantly alter the pore size distribution (PSD) of the gas hydrate-bearing sediments and sandstone reservoir rock by adding an intense amount of micropores to the existing intragranular pore space. Therefore, in the present study, the internal pore space of various clay groups is investigated by manually segmenting Scanning Electron Microscopy (SEM) images. We focused on kaolinite, smectite, chlorite, and dissolution holes and characterized their specific pore space using fractal geometry theory and parameters such as pore count, pore size distribution, area, perimeter, circularity, and density. Herein, the fractal properties of different clay groups and dissolution holes were extracted using the box counting technique and were introduced for each group. It was observed that the presence of clays complicates the original PSD of the reservoir by adding about 1.31-61.30 pores/100 μm2 with sizes in the range of 0.003-87.69 μm2. Meanwhile, dissolution holes complicate the pore space by adding 4.88-8.17 extra pores/100 μm2 with sizes in the range of 0.06-119.75 μm2. The fractal dimension ( D ) and lacunarity ( L ) values of the clays’ internal pore structure fell in the ranges of 1.51-1.85 and 0.18-0.99, respectively. Likewise, D and L of the dissolution holes were in the ranges of, respectively, 1.63-1.65 and 0.56-0.62. The obtained results of the present study lay the foundation for developing improved fractal models of the reservoir properties which would help to better understand the fluid flow, irreducible fluid saturation, and capillary pressure. These issues are of significant importance for reservoir quality and calculating the accurate amount of producible oil and gas.

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Micro-CT and FIB–SEM imaging and pore structure characterization of dolomite rock at multiple scales

Cited by 48 publications

References 30 publications

FIB-SEM Three-Dimensional Tomography for Characterization of Carbon-Based Materials

FIB-SEM Three-Dimensional Tomography for Characterization of Carbon-Based Materials

Emergent Properties of Microbial Activity in Heterogeneous Soil Microenvironments: Different Research Approaches Are Slowly Converging, Yet Major Challenges Remain

Fractal Properties of Various Clay Minerals Obtained from SEM Images

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