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The impact of heterogeneity on the capillary trapping of CO2 in the Captain Sandstone

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Title: The impact of heterogeneity on the capillary trapping of CO2 in the Captain Sandstone
Authors: Harris, C
Jackson, SJ
Benham, GP
Krevor, S
Muggeridge, AH
Item Type: Journal Article
Abstract: A significant uncertainty which remains for CO2 sequestration, is the effect of natural geological heterogeneities and hysteresis on capillary trapping over different length scales. This paper uses laboratory data measured in cores from the Goldeneye formation of the Captain D Sandstone, North Sea in 1D numerical simulations to evaluate the potential capillary trapping from natural rock heterogeneities across a range of scales, from cm to 65m. The impact of different geological realisations, as well as uncertainty in petrophysical properties, on the amount of capillary heterogeneity trapping is estimated. In addition, the validity of upscaling trapping characteristics in terms of the Land trapping parameter is assessed. The numerical models show that the capillary heterogeneity trapped CO2 saturation may vary between 0 and 14% of the total trapped saturation, depending upon the geological realisation and petrophysical uncertainty. When upscaling the Land model from core-scale experimental data, using the maximum experimental Land trapping parameter could increase the expected heterogeneity trapping by a factor of 3. Conversely, depending on the form of the imbibition capillary pressure curve used in the numerical model, including capillary pressure hysteresis may reduce the heterogeneity trapping by up to 70%.
Issue Date: 1-Dec-2021
Date of Acceptance: 21-Oct-2021
URI: http://hdl.handle.net/10044/1/93101
DOI: 10.1016/j.ijggc.2021.103511
ISSN: 1750-5836
Publisher: Elsevier
Start Page: 1
End Page: 12
Journal / Book Title: International Journal of Greenhouse Gas Control
Volume: 112
Copyright Statement: © 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Sponsor/Funder: BP International Limited
Funder's Grant Number: CW148775
Keywords: Science & Technology
Technology
Green & Sustainable Science & Technology
Energy & Fuels
Engineering, Environmental
Engineering, Chemical
Science & Technology - Other Topics
Engineering
CO2 Sequestration
Capillary trapping
Heterogeneity
Imbibition
SMALL-SCALE HETEROGENEITY
RELATIVE PERMEABILITY
MULTIPHASE FLOW
2-PHASE FLOW
PRESSURE
STORAGE
RESERVOIRS
HYSTERESIS
DRAINAGE
BEHAVIOR
Science & Technology
Technology
Green & Sustainable Science & Technology
Energy & Fuels
Engineering, Environmental
Engineering, Chemical
Science & Technology - Other Topics
Engineering
CO2 Sequestration
Capillary trapping
Heterogeneity
Imbibition
SMALL-SCALE HETEROGENEITY
RELATIVE PERMEABILITY
MULTIPHASE FLOW
2-PHASE FLOW
PRESSURE
STORAGE
RESERVOIRS
HYSTERESIS
DRAINAGE
BEHAVIOR
Energy
04 Earth Sciences
05 Environmental Sciences
09 Engineering
Publication Status: Published
Open Access location: https://www.sciencedirect.com/science/article/pii/S1750583621002632
Article Number: ARTN 103511
Online Publication Date: 2021-11-06
Appears in Collections:Earth Science and Engineering



This item is licensed under a Creative Commons License Creative Commons