Impacts of Methane on Carbon Dioxide Storage in Brine Formations

Soltanian, Mohamad Reza; Amooie, Mohammad Amin; Cole, David R.; Darrah, Thomas H.; Graham, David E.; Pfiffner, Susan M.; Phelps, Tommy J.; Moortgat, Joachim

doi:10.1111/gwat.12633

Cited by 36 publications

(18 citation statements)

References 45 publications

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“…It is proving extremely important to develop devices equipped with low cost commercial sensors capable of detecting and measuring the concentrations of the atmospheric gases. CO 2 and methane (CH 4 ), due to their greenhouse effects and the potential gas leakages in water wells, can severely endanger human and animal health [15].…”

Section: Introductionmentioning

confidence: 99%

An Intelligent IoT-Based Food Quality Monitoring Approach Using Low-Cost Sensors

et al. 2019

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The evolution of multipurpose sensors over the last decades has been investigated with the aim of developing innovative devices with applications in several fields of technology, including in the food industry. The integration of such sensors in food packaging technology has paved the way for intelligent food packaging. These integrated systems are capable of providing reliable information about the quality of the packed products during their storage period. To accomplish this goal, intelligent packs use a variety of sensors suited for monitoring the quality and safety of food products by recording the evolution of parameters like the quantity of pathogen agents, gases, temperature, humidity and storage period. This technology, when combined with IoT, is able to provide a lot more information than conventional food inspection technologies, which are limited to weight, volume, color and aspect inspection. The original system described in this work relies on a simple but effective method of integrated food monitoring, right at the client home, suitable for user prepared vacuum-packed foods. It builds upon the IoT concept and is able to create a network of interconnected devices. By using this approach, we are able to combine actuators and sensing devices also providing a common operating picture (COP) by sharing information over the platforms. More precisely, our system consists of gas, temperature and humidity sensors, which provide the essential information needed for evaluating the quality of the packed product. This information is transmitted wirelessly to a computer system providing an interface where the user can observe the evolution of the product quality over time.

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Section: Introductionmentioning

confidence: 99%

An Intelligent IoT-Based Food Quality Monitoring Approach Using Low-Cost Sensors

et al. 2019

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“…CH 4 can affect the gas plume and migration, with implications for storage integrity (Soltanian et al, 2018). In our experiments, CH 4 , being more buoyant and insoluble, may facilitate the formation of smaller bubbles than if the gas had a greater proportion of CO 2 (McGinnis et al, 2011).…”

Section: Accepted Manuscriptmentioning

confidence: 67%

“…We used methane, CH 4 , as a tracer. CH 4 is a common constituent of CO 2 from various capture sources A C C E P T E D M A N U S C R I P T (Porter et al, 2015) and of reservoir fluids (Soltanian et al, 2018) as it is very expensive to separate completely from the CO 2 stream. Furthermore, it is present at trace levels in the atmosphere, and could therefore readily act as a low-cost tracer that could aid identification, attribution and quantitation of leaked CO 2 see e.g.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

An experimental investigation into quantifying CO2 leakage in aqueous environments using chemical tracers

et al. 2019

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Chemical tracers can be an effective means of detecting, attributing and quantifying any leaks to the surface from geological CO 2 stores. CO 2 release experiments have found it difficult to ascertain the fate, or quantify the volume of CO 2 without the application of tracers. However, a significant proportion of global CO 2 storage capacity is located offshore, and the marine environment poses constraints that could limit the success of using tracers. These constraints include uncertainties in the behaviour of tracers in marine sediments and the water column and sampling challenges. However, to date there have been few experimental investigations to address these uncertainties. Here, we used a benchtop experimental setup to explore how effectively methane, a common constituent of captured CO 2 and of reservoir fluids, can aid the quantitation of CO 2 leakage in aqueous environments. The experiment simulated gas leakage into sediments that mimic the seabed, and we measured the partitioning of co-released gases under different environmental conditions and injection rates. We find that the style of seepage and the fate of the CO 2 are affected by the presence of a sand layer and the injection rate. We discuss the implications for leak monitoring approaches, including how tracers may be used to quantify the leak rates and fate of CO 2 in aqueous environments. Our work contributes to ongoing efforts to develop robust offshore monitoring system that will assure operators, regulatory bodies and the public of CO 2 storage integrity.

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“…The objective is to allow the use of accurate equations of state, such as cubic-plus-association 38 , that consider the self-association of polar water molecules as well as cross-association with molecules such as . The latter is of particular interest in the context of geological sequestration 58 . Conversely, the effect of salinity on, e.g., solubilities in water, pH changes, and -rock interactions requires consideration of aqueous geochemistry.…”

Section: Discussionmentioning

confidence: 99%

A higher-order finite element reactive transport model for unstructured and fractured grids

Moortgat

Amooie

et al. 2020

Sci Rep

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This work presents a new reactive transport framework that combines a powerful geochemistry engine with advanced numerical methods for flow and transport in subsurface fractured porous media. Specifically, the PhreeqcRM interface (developed by the USGS) is used to take advantage of a large library of equilibrium and kinetic aqueous and fluid-rock reactions, which has been validated by numerous experiments and benchmark studies. Fluid flow is modeled by the Mixed Hybrid Finite Element (FE) method, which provides smooth velocity fields even in highly heterogenous formations with discrete fractures. A multilinear Discontinuous Galerkin FE method is used to solve the multicomponent transport problem. This method is locally mass conserving and its second order convergence significantly reduces numerical dispersion. In terms of thermodynamics, the aqueous phase is considered as a compressible fluid and its properties are derived from a Cubic Plus Association (CPA) equation of state. The new simulator is validated against several benchmark problems (involving, e.g., Fickian and Nernst-Planck diffusion, isotope fractionation, advection-dispersion transport, and rock-fluid reactions) before demonstrating the expanded capabilities offered by the underlying FE foundation, such as high computational efficiency, parallelizability, low numerical dispersion, unstructured 3D gridding, and discrete fraction modeling.

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Impacts of Methane on Carbon Dioxide Storage in Brine Formations

Cited by 36 publications

References 45 publications

An Intelligent IoT-Based Food Quality Monitoring Approach Using Low-Cost Sensors

An Intelligent IoT-Based Food Quality Monitoring Approach Using Low-Cost Sensors

An experimental investigation into quantifying CO2 leakage in aqueous environments using chemical tracers

A higher-order finite element reactive transport model for unstructured and fractured grids

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