53e43ff3-a6e2-c5df-e063-3050940a59b6 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 2026-07-11 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608718 Geophysical monitoring data of the hydro-mechanical-chemical evolution of a synthetic sandstone with carbonate clasts exposed to CO2 during 6-month at reservoir stress conditions 2026-06-05 creation http://data.bgs.ac.uk/id/dataHolding/13608718 This dataset stores geophysical, transport and chemical data collected during a six-month experiment involving CO2-brine-rock interaction with stress, at reservoir conditions. The rock used for the tests was manufactured in the National Oceanography Centre, Southampton, following the procedure described in Falcon-Suarez et al. (2019). The aim was to study the coupled hydro-mechanical-chemical (HMC) phenomena that occurred in sandstone reservoirs containing carbonates, when interacting with CO2 during Carbon Capture and Storage (CCS) operations. The dataset includes results from two brine-CO2 flow-through tests and three intercalated hydromechanical assessments, where elastic (P- and S-wave velocities and attenuations), transport (bulk electrical resistivity and permeability) and axial strain data were collected and analysed together with basic petrophysical properties. Results from a reactive simulation developed using free-software PHREEQC (Parkhurst and Appelo, 2013) are also included. 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), from 2021 to 2025, as part of the projects GASRIP, EHMPRES and FOCUS (NERC grants NE/X003248/1 - FAPESP-EHMPRES, NE/X006271/1 - FOCUS and NE/R013535/1 - GASRIP). References Falcon-Suarez, I.H., Amalokwu, K., Delgado-Martin, J., Callow, B., Robert, K., North, L., Sahoo, S.K., Best, A.I., 2019. Comparison of stress-dependent geophysical, hydraulic and mechanical properties of synthetic and natural sandstones for reservoir characterization and monitoring studies. Geophysical Prospecting 67, 784-803, https://doi.org/10.1111/1365-2478.12699. Parkhurst, D., Appelo, C.A.J., 2013. Description of input and examples for PHREEQC version 3: A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations, Techniques and Methods, Reston, VA, p. 519. https://pubs.usgs.gov/publication/tm6A43 The spreadsheet file includes six sheets with contain information about (Info) the parameters and acronyms used in the file; (Sample_properties) the rock and fluid properties, including petrophysical properties and fluid composition; (BCFT-1 and BCFT-2) the data collected during the brine-CO2 flow-through tests; (HMA tests) the data collected during the hydromechanical assessments before and after BCFT-1, and after BCFT-2; and (Reactive model) the input and outputs from the reactive model performed using PHREEQC. Ismael Himar Falcon-Suarez National Oceanography Centre Marine Geosciences Group, National Oceanography Centre, European Way Southampton SO14 3ZH United Kingdom not available originator Hanif Santyabudhi Sutiyoso National Oceanography Centre Marine Geosciences Group, National Oceanography Centre, European Way, Southampton SO14 3ZH United Kingdom 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/53e43ff3-a6e2-c5df-e063-3050940a59b6.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Resistivity Simulation Permeability Carbon capture and storage BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data data.gov.uk (non-INSPIRE) 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 2027-06-01 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 2021-01-11 2025-01-06 Microsoft Excel spreadsheet (.xlsx) Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item192358 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/4d2f1709-f67a-4491-aa05-003d115e00b4 WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Falcon-Suarez, I. H., Sutiyoso, H. S. (2026). Geophysical monitoring data of the hydro-mechanical-chemical evolution of a synthetic sandstone with carbonate clasts exposed to CO2 during 6-month at reservoir stress conditions. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/4d2f1709-f67a-4491-aa05-003d115e00b4 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 was configured to simulate realistic effective stress conditions of shallow offshore North Sea - like CCS reservoirs, with a differential (confining minus pore pressure) stress equal 20 MPa, at the RPL NOC temperature (20 C) conditions. We measured ultrasonic P- and S-wave velocities and attenuations, axial strains and electrical resistivity for an increasing CO2 saturation during the two brine-CO2 flow-through (BCFT) tests, and the stress-dependency of the same properties plus permeability during a hydromechanical assessment before and after each BCFT test. With the pore fluid collected downstream we developed a reactive model using PHREEQC software. Altogether was combined with porosity and the information collected from thin sections analysis to interpret coupled HMC phenomena.