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Clathrate hydrates of natural gases

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TLDR
In this paper, the authors compared the properties of hydrates and ice with those of natural gas and showed the effect of thermodynamic inhibitors on the formation of hydrate formation and dissolution process.
Abstract
PREFACE Overview and Historical Perspective Hydrates as a Laboratory Curiosity Hydrates in the Natural Gas Industry Hydrates as an Energy Resource Environmental Aspects of Hydrates Safety Aspects of Hydrates Relationship of This Chapter to Those That Follow Molecular Structures and Similarities to Ice Crystal Structures of Ice Ih and Natural Gas Hydrates Comparison of Properties of Hydrates and Ice The What and the How of Hydrate Structures Hydrate Formation and Dissociation Processes Hydrate Nucleation Hydrate Growth Hydrate Dissociation Estimation Techniques for Phase Equilibria of Natural Gas Hydrates Hydrate Phase Diagrams for Water + Hydrocarbon Systems Three-Phase (LW-H-V) Equilibrium Calculations Quadruple Points and Equilibrium of Three Condensed Phases (LW-H-LHC) Effect of Thermodynamic Inhibitors on Hydrate Formation Two-Phase Equilibrium: Hydrates with One Other Phase Hydrate Enthalpy and Hydration Number from Phase Equilibrium Summary and Relationship to Chapters Which Follow A Statistical Thermodynamic Approach to Hydrate Phase Equilibria Statistical Thermodynamics of Hydrate Equilibria Application of the Method to Analyze Systems of Methane + Ethane + Propane Computer Simulation: Another Microscopic-Macroscopic Bridge Summary Experimental Methods and Measurements of Hydrate Properties Experimental Apparatuses and Methods for Macroscopic Measurements Measurements of the Hydrate Phase Data for Natural Gas Hydrate Phase Equilibria and Thermal Properties Summary and Relationship to Chapters that Follow References Hydrates in the Earth The Paradigm Is Changing from Assessment of Amount to Production of Gas Sediments with Hydrates Typically Have Low Contents of Biogenic Methane Sediment Lithology and Fluid Flow Are Major Controls on Hydrate Deposition Remote Methods Enable an Estimation of the Extent of a Hydrated Reservoir Drilling Logs and/or Coring Provide Improved Assessments of Hydrated Gas Amounts Hydrate Reservoir Models Indicate Key Variables for Methane Production Future Hydrated Gas Production Trends Are from the Permafrost to the Ocean Hydrates Play a Part in Climate Change and Geohazards Summary Hydrates in Production, Processing, and Transportation How Do Hydrate Plugs Form in Industrial Equipment? How Are Hydrate Plug Formations Prevented? How Is a Hydrate Plug Dissociated? Safety and Hydrate Plug Removal Applications to Gas Transport and Storage Summary of Hydrates in Flow Assurance and Transportation APPENDICES INDEX

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Formation of methane hydrate from polydisperse ice powders.

TL;DR: An improved theory of the hydrate growth in a polydisperse ensemble of randomly packed ice spheres is developed to provide a quantitative interpretation of the data in terms of kinetic model parameters.
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An inward and outward natural gas hydrates growth shell model considering intrinsic kinetics, mass and heat transfer

TL;DR: In this article, the gas consumption value increased with the rise of water cut and the total water conversion rate not only depended on the water cuts, but also related to several other factors, two of which were the amount of the dissolved gas and the surface/volume ratio of the particles.
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Carbon dioxide hydrate kinetics in porous media with and without salts

TL;DR: In this paper, the formation and dissociation of CO2 hydrate in marine environments were studied in Toyoura sand (100-500μm), pure water, saltwater of 1.5-5-wt, 3-wt% and natural seawater at formation pressure of 3.5 -5-MPa.
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Mixed hydrates of methane and water‐soluble hydrocarbons modeling of empirical results

TL;DR: In this paper, the hydrate disappearance conditions in the water-methane-water-soluble hydrocarbon system were measured and modeled, and the minimum pressure is about 5-6 mol % hydrocarbon relative to water, independent of temperature and applied hydrocarbon, with the composition almost equal to the ratio between the number of large cages and water molecules.
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An accurate model to predict the thermodynamic stability of methane hydrate and methane solubility in marine environments

TL;DR: In this article, an accurate thermodynamic model is proposed to predict the thermodynamic stability of methane hydrate in marine environments and methane concentration needed to form hydrate, in the absence of gas phase.
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