Geo-electrical Characterisation for CO2 Sequestration in Porous Media

Rabiu, Kazeem O.; Abidoye, Luqman K.; Das, Diganta Bhusan

doi:10.1007/s40710-017-0222-2

Cited by 10 publications

(23 citation statements)

References 37 publications

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“…Laboratory demonstrations and mathematical simulations of geoelectrical monitoring system were well demonstrated in the works of Abidoye and Das [36,37], Abidoye and Bello [35], Rabiu et al [38], Lamert et al [39] and Dethlefsen et al [40]. Abidoye and Das [36,37] and Rabiu et al [38] used unconsolidated porous media of silicate and carbonate soil samples in a sample holder of 10 cm diameter and 4 cm height. They performed simultaneous measurements of bulk relative permittivity (ε b ) and electrical conductivity (σ b ) measurements using three-pin time domain reflectometry probes (TDR probes), which was connected to the wave generator, TDR100 reflectometer (Campbell Scientific Ltd., Shepshed, UK).…”

Section: Geophysical Techniquesmentioning

confidence: 92%

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Tracking CO2 Migration in Storage Aquifer

Abidoye¹,

Das²

2018

Carbon Capture, Utilization and Sequestration

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Monitoring technologies for CO 2 in geological carbon sequestration are based upon the physico-chemical and electromagnetic properties of the CO 2 -water/brine and rock system as well as the induced events such as micro-seismicity. As CO 2 migrates in the subsurface, its interactions with elements like rock, water/brine can be used to track its presence and direction. For deep subsurface storage of CO 2 , methods like electrical resistivity tomography (ERT), seismicity, capillary pressure and relative permeability as well as geochemical measurements can be reliably employed in monitoring CO 2 . Other methods like membrane-sensor technique and gas accumulation chamber are mainly suitable for shallow geological sequestration. However, prior to the full-scale deployment, it is necessary to understand the principles of operations and limitations of the adopted technologies as well as obtain experimental and practical information from them. In the field application, pre-injection baseline assessment is necessary followed by critical assessments during the storage process and post-injection period. Accuracy in leakage quantification and identification of sinks are also important. Factors that can influence the results of these technologies include fluctuations of pressure, temperature, initial salinity level, initial pH level, porosity, fluid properties, porosity, tortuosity, pore size distribution, wettability, reservoir mineralogy and surface chemistry.

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Section: Geophysical Techniquesmentioning

confidence: 92%

“…From their results, it can be inferred that the geoelectrical techniques are highly dependent on water saturation. Furthermore, Rabiu et al [38] performed similar investigations with the inclusion of basalt as porous medium. Similar findings were recorded.…”

Section: Geophysical Techniquesmentioning

confidence: 95%

Tracking CO2 Migration in Storage Aquifer

Abidoye¹,

Das²

2018

Carbon Capture, Utilization and Sequestration

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“…Electric fields are generated in the atmosphere due to thunderstorms. All materials (e.g., soil) also have electric properties, e.g., electrical permittivity and conductivity (Hummel 1998;Rabiu et al 2017).…”

Section: Ohm's Lawmentioning

confidence: 99%

Fundamentals of Physics for Environmental and Medical Professionals

Chandrappa

Das

2020

Environmental Health - Theory and Practice

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Knowledge of physics has been widely used in engineering and medical sciences. Movement of pollutants in the environment, separation of pollutants from waste streams, design and use of instruments required in medical and environmental fields, and spread of pathogens in air/water/soil need understanding of the fundamentals of physics. Knowledge of branches of physics such as electricity, radiation, mechanics, and heat transfer is also required by both medical and environmental professionals. This chapter discusses the fundamentals of physics, which are often the bases of environment and medical sciences.

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“…Therefore, if monitoring sensors are situated at lower depth of the reservoir (i.e., 200-400 m), the sensor can detect the gaseous CO 2 when there is leakage. A wide range of geoelectrical monitoring methods have been developed to monitor the movement and storage of injected supercritical CO 2 (Rabiu et al 2017;Abidoye and Das 2015a), yet there is an outstanding need to find out whether this robust tool can track gaseous CO 2 efficiently and effectively.…”

Section: Introductionmentioning

confidence: 99%

Geoelectrical characterisation of CO2–water systems in porous media: application to carbon sequestration

et al. 2020

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Carbon sequestration is a promising method for the reduction of carbon dioxide (CO2) emissions as it permits the storage of compressed CO2 in the subsurface. The carbon sequestration sites must be monitored to detect potential leaks; one possible method involves the monitoring of geoelectrical properties such as electrical conductivity (σb) and dielectric constant (εb). This investigation focuses on using a time domain reflectometry (TDR) sensor to determine the influence of different factors on the measurements of the electrical conductivity (σb) and dielectric constant (εb) of a porous rock reservoir in relation to the soil water saturation (Sw). The factors investigated were presence of surfactant, salt concentration, pH and rock type which are unique to a given storage site. A number of dynamic two-phase flow experiments were performed using gaseous CO2. It was found that salt concentration, rock type and presence of a surfactant had a notable effect on the σb–Sw and εb–Sw relationships. Higher salt concentrations were found to give higher values for σb and εb for given Sw values. Limestone was found to result in the highest values of both σb and εb for any given Sw, followed by silica and basalt samples. The presence of a surfactant resulted in higher values for σb at higher Sw values and lower values for σb at lower Sw values compared to the case when no surfactant was present. Surfactant presence also resulted in lower values for εb at given Sw values. Initial pH values (with silica sand) were found to have no significant effect on the σb–Sw and εb–Sw relationships. The measurements of σb and εb indicate that the use of TDR presents a viable monitoring option. Furthermore, statistical analysis using non-linear regression was carried out on the experimental results and the model shows a good reliability in the prediction of the monitoring process in geological carbon sequestration.

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Geo-electrical Characterisation for CO2 Sequestration in Porous Media

Cited by 10 publications

References 37 publications

Tracking CO2 Migration in Storage Aquifer

Tracking CO2 Migration in Storage Aquifer

Fundamentals of Physics for Environmental and Medical Professionals

Geoelectrical characterisation of CO2–water systems in porous media: application to carbon sequestration

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