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Metadata Files

Data Publication

Effect of porosity and clays on geophysical and transport properties of sandstone exposed to CO2 injection: Influence of rock heterogeneities on CO2 storage monitoring

Falcon-Suarez, Ismael | Mondol, Nazmul Haque

NERC EDS National Geoscience Data Centre

(2024)

Descriptions

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.

Keywords


Originally assigned keywords
CO2 storage
ultrasonic waves
electrical resistivity
axial strains
permeability
effective pressure

Corresponding MSL vocabulary keywords
electrical resistivity
permeability

MSL enriched keywords
Measured property
electrical properties
electrical resistivity
permeability
sedimentary rock
sandstone
porosity
Measured property
porosity
minerals
silicate minerals
phyllosilicates
clay
unconsolidated sediment
clastic sediment
clay
liquid phase
salt brine
Ancillary equipment
acoustic measurement - active source
ultrasonic imaging equipment
pore fluid pressure
elastic wave velocity
S-wave
Ancillary equipment
model structure monitoring (3D)
acoustic measurement - active source
ultrasonic imaging equipment
elastic wave velocity
S-wave
measured property
carbon (C)
carbon dioxide

MSL enriched sub domains i

rock and melt physics
analogue modelling of geologic processes
geochemistry

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citedData/catalogue/256981dc-245b-410a-90a4-5f0138583a65.html

Source publisher

NERC EDS National Geoscience Data Centre


DOI

10.5285/256981dc-245b-410a-90a4-5f0138583a65


Creators

Falcon-Suarez, Ismael

National Oceanography Centre

Mondol, Nazmul Haque

University of Oslo | Norwegian Geotechnical Institute


Citation

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 [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/256981DC-245B-410A-90A4-5F0138583A65


Dates

Available:

2024

Submitted:

2023-10-19


Funding References

Funder name: Natural Environment Research Council

Funder identifier: https://doi.org/10.13039/501100000270

Funder identifier type: Crossref Funder ID

Award number: NE/X003248/1

Award uri: https://gotw.nerc.ac.uk/list_full.asp?pcode=NE%2FX003248%2F1

Award title: FAPESP-Enhancing Hydro-Mechanical Predictions of CO2-REactive Storage reservoirs from geophysical monitoring (EHMPRES)

Funder name: Natural Environment Research Council

Funder identifier: https://doi.org/10.13039/501100000270

Funder identifier type: Crossref Funder ID

Award number: NE/X006271/1