An investigation into co2–brine–cement–reservoir rock interactions for wellbore integrity in co2 geological storage
| Autor: | Montserrat Recasens, M. Mercedes Maroto-Valer, Harshit Agrawal, Mojgan Hadi Mosleh, Jim Buckman, Qi Liu, Sevket Durucan, Amir Jahanbakhsh, Anna Korre, Nazia Mubeen Farooqui |
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| Přispěvatelé: | Engineering & Physical Science Research Council (EPSRC) |
| Rok vydání: | 2021 |
| Předmět: |
wellbore integrity
Technology Control and Optimization Materials science Composite number Energy Engineering and Power Technology Mineralogy 09 Engineering CO2 geological storage CO2–brine-cement–reservoir rock interaction permeability chemical and petrophysical characterisation Brining Electrical and Electronic Engineering Porosity Engineering (miscellaneous) Cement 02 Physical Sciences Renewable Energy Sustainability and the Environment Petrophysics Building and Construction Petroleum reservoir Permeability (earth sciences) Inductively coupled plasma Energy (miscellaneous) |
| Zdroj: | Energies; Volume 14; Issue 16; Pages: 5033 Energies, Vol 14, Iss 5033, p 5033 (2021) Jahanbakhsh, A, Liu, Q, Hadi Mosleh, M, Agrawal, H, Mubeen Farooqui, N, Buckman, J, Recasens, M, Maroto-Valer, M, Korre, A & Durucan, S 2021, ' An Investigation into CO 2 –Brine–Cement–Reservoir Rock Interactions for Wellbore Integrity in CO 2 Geological Storage ', Energies, vol. 14, no. 16, 5033 . https://doi.org/10.3390/en14165033 |
| DOI: | 10.3390/en14165033 |
| Popis: | Geological storage of CO2 in saline aquifers and depleted oil and gas reservoirs can help mitigate CO2 emissions. However, CO2 leakage over a long storage period represents a potential concern. Therefore, it is critical to establish a good understanding of the interactions between CO2–brine and cement–caprock/reservoir rock to ascertain the potential for CO2 leakage. Accordingly, in this work, we prepared a unique set of composite samples to resemble the cement–reservoir rock interface. A series of experiments simulating deep wellbore environments were performed to investigate changes in chemical, physical, mechanical, and petrophysical properties of the composite samples. Here, we present the characterisation of composite core samples, including porosity, permeability, and mechanical properties, determined before and after long-term exposure to CO2-rich brine. Some of the composite samples were further analysed by X-ray microcomputed tomography (X-ray µ-CT), X-ray diffraction (XRD), and scanning electron microscopy–energy-dispersive X-ray (SEM–EDX). Moreover, the variation of ions concentration in brine at different timescales was studied by performing inductively coupled plasma (ICP) analysis. Although no significant changes were observed in the porosity, permeability of the treated composite samples increased by an order of magnitude, due mainly to an increase in the permeability of the sandstone component of the composite samples, rather than the cement or the cement/sandstone interface. Mechanical properties, including Young’s modulus and Poisson’s ratio, were also reduced. |
| Databáze: | OpenAIRE |
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