An Analytical TOOLBOX for the Characterization of Chalks and Other Fine-Grained Rock Types within Enhanced Oil Recovery Research and Its Application—A Guideline

Udo Zimmermann, Mona Wetrhus Minde, Merete Vadla Madland and Tine Vigdal Bredal
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Udo Zimmermann: Department of Energy Resources, University of Stavanger, 4036 Stavanger, Norway
Mona Wetrhus Minde: The National IOR Centre of Norway, University of Stavanger, 4036 Stavanger, Norway
Merete Vadla Madland: Division of Research, University of Stavanger, 4036 Stavanger, Norway
Tine Vigdal Bredal: Department of Energy Resources, University of Stavanger, 4036 Stavanger, Norway

Energies, 2022, vol. 15, issue 11, 1-12

Abstract: Analyses of fine-grained rocks like shales, cherts, and specifically chalk are challenging with regards to spatial resolution. We propose a “toolbox” to understand mineralogical alteration in chalk, especially those induced by non-equilibrium fluids or polymers and silicates during production of hydrocarbons. These data are fundamental in experiments related to improved/enhanced oil recovery (IOR/EOR) research with the aim to increase hydrocarbon production in a sustainable and environmentally friendly process. The ‘toolbox’ methods analyse rock–fluid or polymer–rock interaction and can be applied to any fine-grained rock type. In our ‘toolbox’, we include methods for routine analysis and evaluate the economic side of the usage together with the complexity of application and the velocity of data acquisition. These methods are routine methods for identification and imaging of components at the same time by chemical or crystallographic means and here applied to petroleum geology. The ‘toolbox’ principle provides a first workflow to develop a road map with clear focus on objectives for maximizing EOR. Most importantly, the methods provide a robust dataset that can identify mineralogical properties and alterations in very fine-grained rocks over several scales (nanometer-decimeter).

Keywords: petroleum geosciences; reservoir characterization; enhanced oil recovery; chalk and fine-grained rocks; rock-fluid chemical interactions; electron microscopy; ion microscopy; Raman spectroscopy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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