Evolving thermal conductivity upon formation and decomposition of hydrate in natural marine sediments

Wei, Rupeng; Shi, Kangji; Guo, Xianwei; Tian, Weisheng; Lv, Xiaoyi; Li, Qingping; Zhang, Yi; Zhao, Jiafei; Yang, Lei

doi:10.1016/j.fuel.2021.121141

Cited by 32 publications

(12 citation statements)

References 48 publications

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“…One such technology is using fiber-optic distributed temperature sensing (DTS) systems. These systems can provide high-resolution temperature measurements along a single optical fiber, allowing real-time monitoring of temperature changes within sediment cores during CO 2 injection. , This technology has been used to study the effects of sediment permeability and water saturation on CO 2 hydrate formation and stability . The results have shown that sediment permeability plays a critical role in hydrate formation and stability, with lower permeability sediments exhibiting higher hydrate saturation levels and longer-term stability.…”

Section: Influence Of Sediment Properties On Co2 Hydrate Storagementioning

confidence: 99%

“…69,70 This technology has been used to study the effects of sediment permeability and water saturation on CO 2 hydrate formation and stability. 69 The results have shown that sediment permeability plays a critical role in hydrate formation and stability, with lower permeability sediments exhibiting higher hydrate saturation levels and longer-term stability. Another technology that has been used for in situ monitoring of CO 2 hydrate formation and stability is electrical resistivity tomography (ERT).…”

Section: Comparative Analysis Of Sediment Modificationmentioning

confidence: 99%

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Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Kasala,

Fang,

Wang

et al. 2024

Energy Fuels

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Exploring various strategies for CO 2 hydrate storage in subseafloor saline sediments reveals a promising yet challenging path toward mitigating anthropogenic CO 2 emissions and advancing clean energy development. Research has revealed the efficacy of sediment-specific modifications, including the use of inorganic emulsifiers, L-leucine (an amino acid), and nanoparticle coatings, in enhancing CO 2 hydrate formation stability and storage capacity. These modifications aid in overcoming the challenges posed by the harsh environmental conditions of salinity and sediment heterogeneity, providing increased stability, enhanced CO 2 adsorption efficiency, and reduced induction time. Furthermore, advancements in nanomaterials have introduced nanostructured encapsulation systems capable of confining and stabilizing CO 2 within a solid matrix under fluctuating pressure, temperature, and salinity conditions. Incorporating nanoparticles into polymers and surfactants yields a nanofluid that exhibits increased stability, improved wettability, interfacial tension (IFT) reduction, and elevated CO 2 hydrate storage efficiency, with the synergistic effects of these components playing a critical role. Moreover, innovative thermal and pressure manipulation strategies, alongside the integration of kinetic promoters, have shown significant potential in optimizing CO 2 hydrate formation kinetics and enhancing longterm stability. These strategies involve novel electrical heating systems, pressure management techniques, and chemical additives that collectively contribute to increased hydrate formation rates and gas storage capacities. Despite these promising developments, the field faces several challenges, including optimizing encapsulation materials to match geological characteristics, the long-term stability of CO 2 hydrates under extreme conditions, and scaling laboratory experiments to field applications. Addressing these issues necessitates a multifaceted approach, incorporating empirical data and theoretical insights to design, screen, and formulate effective CO 2 hydrate storage solutions in subseafloor saline sediments.

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Section: Influence Of Sediment Properties On Co2 Hydrate Storagementioning

confidence: 99%

Section: Comparative Analysis Of Sediment Modificationmentioning

confidence: 99%

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Kasala,

Fang,

Wang

et al. 2024

Energy Fuels

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“…The process of GA optimization is described by a flow chart as presented in Figure 2. The genetic method used in EES is based on the Pikaia [41] optimization tool, which is freely available in the public domain. In EES, the number of individuals varies from 16-128.…”

Section: Genetic and Direct Algorithmmentioning

confidence: 99%

Modelling, Analysis and Entropy Generation Minimization of Al2O3-Ethylene Glycol Nanofluid Convective Flow inside a Tube

et al. 2022

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Entropy generation is always a matter of concern in a heat transfer system. It denotes the amount of energy lost as a result of irreversibility. As a result, it must be reduced. The present work considers an investigation on the turbulent forced convective heat transfer and entropy generation of Al2O3-Ethylene glycol (EG) nanofluid inside a circular tube subjected to constant wall temperature. The study is focused on the development of an analytical framework by using mathematical models to simulate the characteristics of nanofluids in the as-mentioned thermal system. The simulated result is validated using published data. Further, Genetic algorithm (GA) and DIRECT algorithm are implemented to determine the optimal condition which yields minimum entropy generation. According to the findings, heat transfer increases at a direct proportion to the mass flow, Reynolds number (Re), and volume concentration of nanoparticles. Furthermore, as Re increases, particle concentration should be decreased in order to reduce total entropy generation (TEG) and to improve heat transfer rate of any given particle size. A minimal concentration of nanoparticles is required to reduce TEG when Re is maintained constant. The highest increase in TEG with nanofluids was 2.93 times that of basefluid. The optimum condition for minimum entropy generation is Re = 4000, nanoparticle size = 65 nm, volume concentration = 0.2% and mass flow rate = 0.54 kg/s.

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“…It is also difficult to achieve a perfect replica of the reservoir in the laboratory. In addition, various sand particles will also show different thermal conductivities, resulting in varying reservoir characteristics. , …”

Section: Introductionmentioning

confidence: 99%

“…In addition, various sand particles will also show different thermal conductivities, resulting in varying reservoir characteristics. 31,32 A large number of experiments have been carried out in laboratory to simulate hydrate exploitation; yet the results could be quite different. Among the many varying conditions, the difference of the reactor is considered to play a major role.…”

Section: ■ Introductionmentioning

confidence: 99%

Progress on Laboratory-Scale Reactors for Simulating Gas Production from Hydrate Reservoir

et al. 2021

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Enormous laboratory efforts have been made to establish a better understanding of gas production behaviors from hydrate reservoirs. This involves an artificial synthesis and decomposition of hydrate samples in various reactors. The reactors should play a crucial role in the behaviors of hydrate formation and decomposition as well as their feasibility to scale-up. Therefore, a comprehensive summary of the current equipment is necessary. In this work, typical reactors used to study gas production behaviors from hydrate-containing sediments are introduced, involving their sizes, sensors, pressure and temperature controlling systems, and special features; the significant findings based on these reactors are also discussed. Through the results of laboratory experiments, the state of hydrate reservoirs and the changes in their characteristics during the production process can be understood; this may involve the kinetics of hydrate decomposition and its influencing factors and the seepage process of multiphase flow in sediments. Consequently, the primary control factors and control methods that affect the gas production rate and environmental safety can be given. The real-time measurement of hydrate reservoir temperature, pressure, sonic velocity, resistivity, stress, and other parameters can be determined; thus, the research on natural gas hydrate in the laboratory requires very strict equipment for support. Nevertheless, the space of the indoor simulated reactors was limited; the diameter of the largest reactor was no more than 2 m, which is not comparable to the actual reservoir. Therefore, it is still very challenging to upscale the laboratory findings to guide the on-site operation; multiscale approaches involving numerical simulation are of crucial importance as well.

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Evolving thermal conductivity upon formation and decomposition of hydrate in natural marine sediments

Cited by 32 publications

References 48 publications

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Modelling, Analysis and Entropy Generation Minimization of Al2O3-Ethylene Glycol Nanofluid Convective Flow inside a Tube

Progress on Laboratory-Scale Reactors for Simulating Gas Production from Hydrate Reservoir

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Evolving thermal conductivity upon formation and decomposition of hydrate in natural marine sediments

Cited by 32 publications

References 48 publications

Comprehensive Review and Perspectives of CO2 Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO2 Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Modelling, Analysis and Entropy Generation Minimization of Al2O3-Ethylene Glycol Nanofluid Convective Flow inside a Tube

Progress on Laboratory-Scale Reactors for Simulating Gas Production from Hydrate Reservoir

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Product

Resources

About

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies