Pore Space Quantification and Distribution in an Organic-rich Shale


Physical porosity is a crucial property in shales as it controls the storage capacity to a large extent and forms the transport system. Imaging the visible pore space, the associated mineralogy, and organic matter provide insight into the relevant phases for storage and transport and allow for upscaling. However, it is a challenge to measure the physical porosity in a representative way and at high resolution because of sample heterogeneity as well as small pore sizes, which are typically below the micrometer in those fine-grained rocks. Using our BIB-SEM technology we are able to assess the sample heterogeneity and image the typical pores at nanometer scale resolution, commonly employing a pixel size of 15 nanometer, in a representative way. Moreover, core damage like cracks can be quantified and corrected for bulk porosity and permeability measurements.


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Pore Space Quantification and Distribution in an Organic-rich Shale