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Investigation of caprock integrity due to pressure build-up during high-volume injection into the Utsira formation

Gasda, Sarah Eileen; Wangen, Magnus; Bjørnarå, Tore Ingvald; Elenius, Maria
Peer reviewed, Journal article
Published version
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Gasda_Bj%C3%B8rnar%C3%A5_etal%282017%29.pdf (6.208Mb)
URI
http://hdl.handle.net/11250/2451678
Date
2017
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  • NGI articles [970]
Original version
Energy Procedia. 2017, 114 3157-3166.   10.1016/j.egypro.2017.03.1444
Abstract
In this work, we investigate the pressure-limited storage capacity of the Utsira formation. We employ the use of a simple capacity estimate based on maximum sustainable pressure. Here, the pressure during injection or post-injection cannot exceed the least compressive stress at the base of the caprock at any location. Given the global capacity estimate, large-scale simulations are performed to determine if the global capacity can be reasonably attained given local injectivity constraints and long-term CO2 trapping. We find that the Utsira can withstand injection rates over 100 Mt/y for 50 years, which is equivalent to 8.3 Gt of CO2.
Journal
Energy Procedia

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