کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
205484 461111 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of the effect of particle size on permeability in hydrate-bearing porous media using pore network models combined with CT
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Analysis of the effect of particle size on permeability in hydrate-bearing porous media using pore network models combined with CT
چکیده انگلیسی


• Pore network model with CT provides a nondestructive way of obtaining the porosity.
• Increasing pore and throat radii increases the absolute permeability in hydrates.
• Larger porosity induces a larger water but a smaller gas relative permeability.

Because of the clean burning and minimal pollution generation of natural gas hydrates, they are viewed as premium fuel energy. The gas and water flow is highly dependent on the seepage properties of the hydrate sediments; therefore, the permeability is a key parameter for estimating the gas production of hydrate reservoirs. Pore network models combined with X-ray computed tomography (CT) were proposed to analyze the index properties and percolation characteristics of porous media containing hydrates in our previous study. This study extends our previous investigation into the influences of particle size and porosity on permeability. The results suggest the porosities of hydrate-bearing porous media formed by different-size particles, as calculated by both the pore network models and the volumetric method, are in agreement. Moreover, the hydrate-bearing porous media formed by larger-size particles has larger porosity, smaller capillary pressure, and larger absolute permeability. In addition, under the same degree of water saturation, larger porosity induced a larger water-phase relative permeability, but a smaller gas-phase relative permeability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 163, 1 January 2016, Pages 34–40
نویسندگان
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