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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v21.i4.30
pages 329-341

REPRESENTING PORE SHAPES BY APPROPRIATE POLYGONS IN PORE NETWORK MODELS

Jian Hou
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, China; School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China
Bei Wei
School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China
Kang Zhou
School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China
Qingjun Du
School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China

RESUMO

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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