Marine gas hydrate technology: State of the art and future possibilities for Europe

Klar, Assaf; Deerberg, Görge; Janicki, Georg; Schicks, Judith M.; Riedel, Michael; Fietzek, Peer; Mosch, Thomas; Tinivella, Umberta; Ruiz, Maria De La Fuente; Gatt, P.; Schwalenberg, Katrin; Heeschen, Katja; Bialas, Jörg; Pinkert, Shmulik; Tang, Anh Minh; Kvamme, Bjørn; Spangenberg, Erik; English, Niall J.; Bertrand, Chazallon; Parlaktuna, Mahmut; Sahoo, Sourav K.; Bouillot, Baptiste; Desmedt, Arnaud; Wallmann, Klaus

doi:10.3289/migrate_wg2.2019

Cited by 3 publications

(1 citation statement)

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“…Pressures exceeding 800m depth are typically high enough to maintain CO 2 in a condensed state, which is ideal for maximizing storage capacity . Controlled pressure level conditions during CO 2 injection, pressure cycling techniques, such as cyclic injection and withdrawal of fluids to induce pressure variations, as well as controlled oscillations in pressure levels to optimize the conditions for CO 2 hydrate formation in subseafloor saline sediments, have been identified as crucial factors in promoting efficient CO 2 hydrate formation and ensuring long-term stability . The interplay between pressure and temperature also plays a critical role. , …”

Section: Optimizing Co2 Hydrate Formation and Stability Via Thermal A...mentioning

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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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: Optimizing Co2 Hydrate Formation and Stability Via Thermal A...mentioning

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 Effect of Hydrate Formation Conditions on the Mechanics of Laboratory Methane Hydrate‐Bearing Sediments

Rake,

Pinkert

2024

JGR Solid Earth

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The mechanics of methane hydrate‐bearing sediments (MHBS) have been broadly investigated over recent years in the context of methane‐gas production or climate‐change effects. Their mechanical investigation has mainly been carried out using models constructed from experimental data obtained for laboratory‐formed MHBS. Along with the dominant effects of hydrate saturation and morphology within the host soil pores, this study recognizes the effective pressure at which the hydrate is formed as a key factor in the MHBS mechanics. A state‐of‐the‐art experimental study has been conducted in order to isolate the effect of the hydrate formation pressure, for use as a model parameter. Two generalized mechanical prediction models that incorporate the effect of the hydrate formation pressure are developed in this work: (a) an analytical shear strength prediction, and (b) an empiric graphical model for predicting volumetric changes along a given stress path. The models are related to a novel data representation which enables the analysis of a few individual test outcomes as a whole, through a volume‐change mapping that describes the complex influence of the volumetric effect of hydrate in MHBS, under combined hydrostatic and deviatoric loading scenarios. In this study, we delve into a specific configuration of hydrate morphology, hydrate saturation, and host soil type, enabling a distinctive fundamental geotechnical investigation and the development of a conceptual modeling approach. The paper describes the approaches by which the MHBS properties can be extracted for other MHBS samples (than those examined in this work) having different host soils and hydrate pore‐space morphologies.

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Dilation Behavior of Gas-Saturated Methane-Hydrate Bearing Sand

Pinkert

2019

Energies

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The geotechnical properties of methane-hydrate-bearing sediments (MHBS) are commonly investigated in the laboratory by using artificial hydrate formations in sandy specimens. Analyses of MHBS saturated with gas or water (in addition to methane-hydrate) showed significant mechanical differences between the two pore-filling states. This paper discusses the unique dilatancy behavior of gas-saturated MHBS, with comparison to water-saturated test results of previously-published works. It is shown that the significant compaction of gas-saturated samples is related to internal tensile forces, which are absent in water-saturated samples. The conceptual link between the internal tensile forces and the compaction characteristics is demonstrated through mechanical differences between pure sand and cemented sand. The paper establishes the link between internal adhesion in gas-saturated MHBS and the unique dilation response by using a stress–dilatancy analysis.

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Marine gas hydrate technology: State of the art and future possibilities for Europe

Cited by 3 publications

References 0 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

The Effect of Hydrate Formation Conditions on the Mechanics of Laboratory Methane Hydrate‐Bearing Sediments

Dilation Behavior of Gas-Saturated Methane-Hydrate Bearing Sand

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Marine gas hydrate technology: State of the art and future possibilities for Europe

Cited by 3 publications

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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

The Effect of Hydrate Formation Conditions on the Mechanics of Laboratory Methane Hydrate‐Bearing Sediments

Dilation Behavior of Gas-Saturated Methane-Hydrate Bearing Sand

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Product

Resources

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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