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)
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.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2023-10-19
- Maintenance and update frequency
- notApplicable
- GEMET - INSPIRE themes, version 1.0
- BGS Thesaurus of Geosciences
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- Carbon dioxide
- NGDC Deposited Data
- Permeability
- Resistivity
- Carbon capture and storage
- Keywords ()
- Keywords
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- NERC_DDC
- Limitations on Public Access
- otherRestrictions
- Other constraints
- restricted
- Use constraints
- otherRestrictions
- Other constraints
- 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.
- Other constraints
- Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Topic category
-
- Geoscientific information
- Begin date
- 2022-01-09
- End date
- 2023-01-08
Spatial Reference System
No information provided.
Distribution Information
- Data format
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MS Excel
()
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MS Excel
()
- Resource Locator
- Data
- Resource Locator
- Digital Object Identifier (DOI)
- Resource Locator
- Data
- Resource Locator
- Digital Object Identifier (DOI)
- Quality Scope
- nonGeographicDataset
- Other
- non geographic dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
- See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
- See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
- 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.
Metadata
- File identifier
- 09a1e071-e9d3-610b-e063-0937940a7855 XML
- Metadata Language
- English (en)
- Resource type
- nonGeographicDataset
- Hierarchy level name
- non geographic dataset
- Metadata Date
- 2024-04-24
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
British Geological Survey
Environmental Science Centre,Keyworth
,
NOTTINGHAM
,
NOTTINGHAMSHIRE
,
NG12 5GG
,
United Kingdom
+44 115 936 3100