4.7 Article

Pore-scale analysis of formation damage; A review of existing digital and analytical approaches

Journal

ADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume 288, Issue -, Pages -

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ELSEVIER
DOI: 10.1016/j.cis.2020.102345

Keywords

Formation damage; Electron microscopy; XRD; Computed tomography; NMR

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This study aims to fill the gap in the literature by investigating the main mechanisms and experimental methods related to formation damage in porous media. A focus is placed on modern and nondestructive analytical methods, which provide robust identification of damage processes when used in combination.
Formation damage is one of the most challenging problems that occurs during the lifetime of a well. Despite numerous previous studies, an organized review of the literature that introduces and describes the digital and analytical approaches developed for formation damage analysis is lacking. This study aims to fill this gap through briefly describing the main mechanisms behind formation damage in porous media as well as investigating the main related experimental methods with an emphasis on novel imaging techniques. Specifically, there will be a focus on a number of modern and nondestructive analytical methods, such as dry/cryogenic Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), CT-scanning (both using adapted medical scanners and the use of high-resolution micro-CT instruments) and Nuclear Magnetic Resonance (NMR), which obtain outstanding results for the identification of formation damage mechanisms. These approaches when used in combination provide a robust identification of damage processes, while they reduce the risk of operational mistakes for decision makers through visualization of the distribution, severity, and nature of the damage mechanisms. (C) 2020 Elsevier B.V. All rights reserved.

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