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ANALYSIS OF FRACTIONAL FLOW FOR TRANSIENT TWO-PHASE FLOW IN FRACTAL POROUS MEDIUM

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China

E-mail Address: lucyluting@163.com

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YONGGANG DUAN

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China

E-mail Address: nanchongdyg@163.com

Corresponding authors.

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QUANTANG FANG

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China

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XIAOLU DAI

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China

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, and

JINSUI WU

Department of Mathematics and Physics, North China Institute of Science and Technology, East Yanjiao, Beijing 101601, P. R. China

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https://doi.org/10.1142/S0218348X16500134Cited by:5 (Source: Crossref)

Abstract

Prediction of fractional flow in fractal porous medium is important for reservoir engineering and chemical engineering as well as hydrology. A physical conceptual fractional flow model of transient two-phase flow is developed in fractal porous medium based on the fractal characteristics of pore-size distribution and on the approximation that porous medium consist of a bundle of tortuous capillaries. The analytical expression for fractional flow for wetting phase is presented, and the proposed expression is the function of structural parameters (such as tortuosity fractal dimension, pore fractal dimension, maximum and minimum diameters of capillaries) and fluid properties (such as contact angle, viscosity and interfacial tension) in fractal porous medium. The sensitive parameters that influence fractional flow and its derivative are formulated, and their impacts on fractional flow are discussed.

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