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- W2945752073 abstract "Although computed tomography (CT-Scanning) has been regularly applied to core analyses in petroleum geology, there is still a need to improve our ways to document porosity and porosity distribution in the entire pore scale spectrum, from the tens of nanometer to the meter-scale. Porosity imaging is particularly crucial for complex and heterogeneous rocks such as hydrothermally altered and fractured carbonates. The present work proposes an improved method using medical-CT to reliably estimate reservoir porosity. An in-house core-flooding setup allowed to analyse several individual core samples, scanned simultaneously (dry and saturated), as well as continuous core sections up to 1.5 m long. Without any prior knowledge of samples, three-dimensional alignment and subtraction of the two data sets (dry and saturated states) results in the generation of 3D porosity matrices. The methodology tested on a large set of reference core material shows a strong correlation between conventional gas porosimetry techniques and porosity from CT-scan. The added value of the porosity measurements by CT-scan is, first of all, the generation of 3D images of pore network, allowing to assess spatial attributes of macropores, their distribution and connectivity. Secondly, the CT-scan method also provides continuous porosity profile at the millimetric scale. Both developments are crucial for the understanding of reservoir rock properties." @default.
- W2945752073 created "2019-05-29" @default.
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- W2945752073 date "2019-11-01" @default.
- W2945752073 modified "2023-10-18" @default.
- W2945752073 title "Continuous porosity characterization: Metric-scale intervals in heterogeneous sedimentary rocks using medical CT-scanner" @default.
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- W2945752073 doi "https://doi.org/10.1016/j.marpetgeo.2019.04.039" @default.
- W2945752073 hasPublicationYear "2019" @default.
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