Experimental rig to improve the geophysical and geomechanical understanding of CO2 reservoirs
Experimental rig to improve the geophysical and geomechanical understanding of CO2 reservoirs
We intend to perform experiments that simulate real Carbon Capture and Storage (CCS) conditions in the laboratory, and hence provide the necessary knowledge to interpret field seismic surveys. Primarily, our research is focused on determining seismic rock properties (i.e., wave velocities and attenuation) of real and artificial 50 mm diameter brine-CO2-bearing sandstone and sand samples that are representative host rocks of real CCS scenarios. Accordingly, we have integrated into a new triaxial cell system both an ultrasonic pulse-echo method for accurate velocity (± 0.3%) and attenuation (± 0.1 dB cm-1) measurements, and an electrical resistivity tomography (ERT) method to monitor homogeneity of pore fluid distribution within the samples. The use of ERT provides calibration data for field scale techniques (such as marine controlled source electromagnetic surveying) but also allows measurements of bulk resistivity, fluid diffusion monitoring, flow pathway characterization, and determination of the relative permeability for different brine/brine-CO2 ratios. By simultaneously measuring ultrasonic P- and S-wave velocities and electrical resistivity, we also provide data for joint inversion of seismic and electric field data. Furthermore, the stress-strain behaviour of the sample is continuously monitored with the aid of electrical gauges, so that we deal consistently and simultaneously with the geophysical and geomechanical response of the reservoir when submitted to CO2 injections.
75-81
Falcon-Suarez, Ismael
9e8022b5-8799-4326-8d5b-0ed46de3b25a
North, Laurence
65837b6b-40f1-4a1c-ba66-ec6ff2d7f84b
Best, Angus
cad03726-10f8-4f90-a3ba-5031665234c9
4 December 2014
Falcon-Suarez, Ismael
9e8022b5-8799-4326-8d5b-0ed46de3b25a
North, Laurence
65837b6b-40f1-4a1c-ba66-ec6ff2d7f84b
Best, Angus
cad03726-10f8-4f90-a3ba-5031665234c9
Falcon-Suarez, Ismael, North, Laurence and Best, Angus
(2014)
Experimental rig to improve the geophysical and geomechanical understanding of CO2 reservoirs.
Energy Procedia, 59, .
(doi:10.1016/j.egypro.2014.10.351).
Abstract
We intend to perform experiments that simulate real Carbon Capture and Storage (CCS) conditions in the laboratory, and hence provide the necessary knowledge to interpret field seismic surveys. Primarily, our research is focused on determining seismic rock properties (i.e., wave velocities and attenuation) of real and artificial 50 mm diameter brine-CO2-bearing sandstone and sand samples that are representative host rocks of real CCS scenarios. Accordingly, we have integrated into a new triaxial cell system both an ultrasonic pulse-echo method for accurate velocity (± 0.3%) and attenuation (± 0.1 dB cm-1) measurements, and an electrical resistivity tomography (ERT) method to monitor homogeneity of pore fluid distribution within the samples. The use of ERT provides calibration data for field scale techniques (such as marine controlled source electromagnetic surveying) but also allows measurements of bulk resistivity, fluid diffusion monitoring, flow pathway characterization, and determination of the relative permeability for different brine/brine-CO2 ratios. By simultaneously measuring ultrasonic P- and S-wave velocities and electrical resistivity, we also provide data for joint inversion of seismic and electric field data. Furthermore, the stress-strain behaviour of the sample is continuously monitored with the aid of electrical gauges, so that we deal consistently and simultaneously with the geophysical and geomechanical response of the reservoir when submitted to CO2 injections.
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Published date: 4 December 2014
Organisations:
Marine Geoscience
Identifiers
Local EPrints ID: 398069
URI: http://eprints.soton.ac.uk/id/eprint/398069
ISSN: 1876-6102
PURE UUID: 6430980c-bd6b-4b4c-a5d3-c89f2d0a7af6
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Date deposited: 15 Jul 2016 13:55
Last modified: 15 Mar 2024 01:28
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Author:
Ismael Falcon-Suarez
Author:
Laurence North
Author:
Angus Best
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