09a1e071-e9d3-610b-e063-0937940a7855 English nonGeographicDataset non geographic dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-05-30 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608125 Effect of porosity and clays on geophysical and transport properties of sandstone exposed to CO2 injection: Influence of rock heterogeneities on CO2 storage monitoring (NERC Grants NE/X003248/1, NE/X006271/1) 2023-10-19 creation http://data.bgs.ac.uk/id/dataHolding/13608125 This dataset gathers the data collected during a brine:CO2 flow-through experiments conducted on three sandstones with similar mineralogical compositions (major minerals) but different porosity, clay-size fraction and clay mineralogy. The aim was to study the effect of such heterogeneities on interpretation of geophysical data. Geophysical and transport data were collected before, during and after exposing each sample to CO2, and analysed with basic petrophysical properties. The tests were conducted in the high-pressure, room-temperature (20°C) experimental setup for multi-flow-through tests in the Rock Physics Laboratory at the National Oceanography Centre, Southampton (NOCS), during 2022, as part of the OASIS, EHMPRES and FOCUS projects with funding from the Research Council of Norway (RCN grant no. 280472 - OASIS) and the Natural Environment Research Council (NERC grants NE/X003248/1 - FAPESP-EHMPRES, and NE/X006271/1 - FOCUS). To simulate the specific effective stress conditions of the target CO2 storage reservoir in Aurora (Aker et al., 2021), northern North Sea, the confining and pore pressure conditions of the reservoir were accommodated to our lab temperature conditions. We measured ultrasonic P- and S-wave velocities and attenuations, axial strains and electrical resistivity for an increasing CO2 saturation. The degree of brine saturation was inferred from the electrical resistivity using the modified Archie’s empirical relationship to account for the contribution of clay minerals, based on the Waxman–Smits–Juhasz model (see further details in, e.g., Falcon-Suarez et al. (2021)). We refer to Falcon-Suarez et al. (2020) for further information about the experimental rig and the CO2 injection protocol. Ismael Falcon Suarez National Oceanography Centre United Kingdom not available originator Nazmul Haque Mondol University of Oslo and Norwegian Geotechnical Institute not available originator Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey United Kingdom not available pointOfContact notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/09a1e071-e9d3-610b-e063-0937940a7855.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Carbon dioxide Permeability Resistivity Carbon capture and storage BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data Citable Data dataCentre NERC_DDC otherRestrictions restricted The dataset has been formally approved by BGS for access by external clients under a BGS Digital Data Licence, issued via BGS's IPR Section. The dataset must not be provided to, or be accessible by, an external client until the IPR Section confirms that signed licence documentation is in place. Refer to the IPR Section (DigitalLE@bgs.ac.) if further advice is required.. Constraint applies until 2024-05-15 otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" English geoscientificInformation 2022-01-09 2023-01-08 Microsoft Excel witheld Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item182705 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/256981dc-245b-410a-90a4-5f0138583a65 WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Falcon-Suarez, I., Mondol, N.H. (2024). Effect of porosity and clays on geophysical and transport properties of sandstone exposed to CO2 injection: Influence of rock heterogeneities on CO2 storage monitoring. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/256981dc-245b-410a-90a4-5f0138583a65 information nonGeographicDataset non geographic dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The experiment involved three steady state brine-CO2 flow-through (BCFT) tests (one per sample) to replicate CO2 storage conditions at North Sea-like reservoirs and evaluate geophysical monitoring techniques. The data include ultrasonic P- and S-wave velocities and their respective attenuation factors (at 600 kHz), axial strains, and electrical resistivity and brine and CO2 flow rates, all normalized with respect to the samples pore volume. Before and after the BCFT, under dry and brine saturated conditions, ultrasonic and transport (permeability when dry; resistivity when wet) properties of the samples were measured along an effective stress path to analyse changes in the hydromechanical properties of the rock samples triggered by CO2 injection.