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Low temperature and high pressure dramatically thicken the gas hydrate stability zone in rapidly formed sedimentary basins
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New Insights into the Occurrence and Implications of Mobile Water in Gas Hydrate Systems
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Implementation of a Numerically Stable Algorithm for Capillary Hysteresis in Gas Hydrate Deposits
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Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates
Abstract Surfactants are often used to stabilize aqueous dispersions. For example, surfactants can be used to prevent hydrate particles from forming large plugs that can clog, and sometimes rupture pipelines. Changes in oil composition, however dramatically affect the performance of said surfactants. In this work we demonstrate that aromatic compounds, dissolved in the hydrocarbon phase, can have both synergistic and antagonistic effects, depending on their molecular structure, with respect to surfactants developed to prevent hydrate agglomerations. While monocyclic aromatics such as benzene were found to disrupt the structure of surfactant films at low surfactant density, they are expelled from the interfacial film at high surfactant density. On the other hand, polycyclic aromatics, in particular pyrene, are found to induce order and stabilize the surfactant films both at low and high surfactant density. Based on our simulation results, polycyclic aromatics could behave as natural anti-agglomerants and enhance the performance of the specific surfactants considered here, while monocyclic aromatics could, in some cases, negatively affect performance. Although limited to the conditions chosen for the present simulations, the results, explained in terms of molecular features, could be valuable for better understanding synergistic and antagonistic effects relevant for stabilizing aqueous dispersions used in diverse applications, ranging from foodstuff to processing of nanomaterials and advanced manufacturing.
Dynamic 3D imaging of gas hydrate kinetics using synchrotron computed tomography
Abstract not provided
Probabilistic Predictions of Gas Hydrate Formation near Blake Ridge using Dakota and PFLOTRAN.
Abstract not provided.
Probabilistic Predictions of Offshore Gas Hydrate and Submarine Permafrost Distribution Along the Alaskan North Slope.
Abstract not provided.
Efficient Predictions of Global Free Gas and Gas Hydrate Formation using K-means Clustering.
Abstract not provided.