Modeling Methane-hydrate Formation in Marine Sediments
Lili Zheng, Hui Zhang, Mingyu Zhang, Prasad Kerkar, Devinder Mahajan, 2009. "Modeling Methane-hydrate Formation in Marine Sediments", Natural Gas Hydrates—Energy Resource Potential and Associated Geologic Hazards, T. Collett, A. Johnson, C. Knapp, R. Boswell
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In this chapter, we review knowledge critical to simulating hydrate formation and dissociation in marine sediments. The advantages and disadvantages of existing numerical models are summarized. An advanced computational model (meshless-particle-based model) is introduced to simulate fluid flow, heat and mass transfer, and hydrate formation at the pore level. In the model, the spatial distribution and uncertainty of porosity and variation of permeability with hydrate formation can be predicted. The model has been tested for different crystal growth kinetics. The pore-level simulation results may help us understand the quantity and distribution of methane hydrate within the confines of a pore space.
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In September 2004, the American Association of Petroleum Geologists (AAPG) convened a Hedberg Research Conference in Vancouver, British Columbia, Canada titled "Natural Gas Hydrates: Energy Resource Potential and Associated Geologic Hazards." As a continuation of the Hedberg Research Conference in Vancouver, the conveners of the conference and the editors of this Memoir have worked with more than 150 authors and coauthors to prepare this Memoir on gas hydrates. This publication follows the goals of the Hedberg conference; however, the contents of this Memoir were expanded to include all aspects of gas hydrates in nature. This Memoir contains 39 individual contributions, ranging from long topical summaries to shorter focused research papers. This Memoir has been published in two parts, with digital versions of all the complete research papers included on the enclosed CD. The hardcopy portion of the Memoir includes abstracts and several key figures for each of the contributions along with a complete copy of a gas hydrate technical review. The digital portion of this Memoir has been organized into a series of topical sections consisting of review articles, marine gas hydrate papers, and gas hydrate laboratory and modeling studies. Because of the rapidly emerging worldwide interest in gas hydrates, this comprehensive treatise on the geology of gas hydrates will be valuable to both the gas hydrate research community and exploration/development geologists working in arctic and deep marine environments.