Innovative characterization of tight sandstones from Paleozoic basins in Poland using X-ray computed tomography supported by nuclear magnetic resonance and mercury porosimetry
Innovative characterization of tight sandstones from Paleozoic basins in Poland using X-ray computed tomography supported by nuclear magnetic resonance and mercury porosimetry
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DOI：
10.1016/j.petrol.2018.03.052
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发表时间：
2018-07-01
影响因子：
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通讯作者：
Dohnalik, M.
中科院分区：
文献类型：
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作者：
Krakowska, P.;Puskarczyk, E.;Dohnalik, M.
计算机X射线断层扫描、核磁共振光谱和压汞法是详细描述低孔隙度和低渗透率岩石孔隙空间的关键实验方法。进行了专门用于骨骼参数化的计算，并在致密砂岩上进行了测试，以获得有关孔隙空间结构的定量信息。提出了基于最佳拟合椭球半径的孔喉直径估算方法。应用半变异函数进行孔隙定位可以评价孔隙空间结构的非均质性。与反映由惯性矩计算的孔圆度的参数相比，基于封闭体积和表面积确定的球度是更可信的参数。不可否认的CT优势是可以进行3D孔隙空间可视化，这证实了定量参数的有用性。介绍了一种新的多孔材料检测软件poROSE，用于图像的定性和定量判读。
Computed X-ray tomography, nuclear magnetic resonance spectroscopy and mercury porosimetry are key experimental methods for detailed pore space characterization of low porosity and low permeability rocks. Calculations dedicated to bones parametrization were carried out and tested on tight sandstones in order to get the quantitative information about pore space structure. Innovative approach in estimating pore throat diameter is introduced based on best-fit ellipsoid's radiuses. Application of semivariogram for pores location allows assessing the heterogeneity in pore space structure. Sphericity determined based on enclosed volume and surface area is a more creditable parameter in comparison to parameter reflecting the pore roundness calculated from moments of inertia. Undeniable CT advantage is a possibility to perform 3D pore space visualization what confirmed the usefulness of quantitative parameters. New software poROSE was presented as porous materials examination software for images qualitative and quantitative interpretation.