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ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508
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REPRESENTING PORE SHAPES BY APPROPRIATE POLYGONS IN PORE NETWORK MODELS
ABSTRAKT
Three new shape characterization techniques for the pore network model are developed so that capillary behavior can be predicted more accurately. Given a shape factor and inscribed radius, the C-T-Q (circles, arbitrary triangles, and quadrangles) characterization is proposed based on the C-T-S (circles, arbitrary triangles, and squares) characterization. Instead of squares, irregular quadrangles are used to represent pore shapes. The nonunique convex polygon characterization technique uses a pore's area and perimeter to create a mathematical model. The area and perimeter are kept exactly the same as those of the actual shape. Finally, given the inscribed radius, area, and perimeter, the polygon's shape characterization is improved by treating concave cross sections specifically. Compared with the traditional method, the new methods can describe capillary behavior more accurately and can be used to make the structure of a pore network model more realistic.
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Wei Bei, Hou Jian, Lei Zhongqing, Wang Huiyu, A hybrid method to segment the pores and throats of micromodels, Arabian Journal of Geosciences, 12, 23, 2019. Crossref