Study on Mechanism of Seepage Flow of S/P Flooding Fluid

Han Min Xiao; Su Nan Cong; Ling Hui Sun; Hai Qin Zhang; Lin Song Cheng

doi:10.4028/www.scientific.net/AMM.421.349

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 421Study on Mechanism of Seepage Flow of S/P Flooding...

Study on Mechanism of Seepage Flow of S/P Flooding Fluid

Abstract:

Because plenty of polymers have been added in the surfactant/polymer (S/P) flooding fluid, its viscosity becomes higher. So when S/P flooding fluid flows in the stratum, its threshold pressure gradient is an important influence factor. According to study S/P flooding fluid with different viscosities that flows in different permeability cores, the variation laws of seepage curve have been obtained. The results of the study show that the seepage of S/P flooding exhibits nonlinear seepage in low velocity, and changes gradually to linear flow as the pressure gradient rises. As well, S/P flooding has obvious threshold pressure gradient when its speed is low. The threshold pressure gradient of S/P is related to the permeability of the core and its own viscosity. The higher the viscosity, the lower the permeability of the core, the threshold pressure gradient will be greater.

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Periodical:

Applied Mechanics and Materials (Volume 421)

Pages:

349-353

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.421.349

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Online since:

September 2013

Authors:

Han Min Xiao, Su Nan Cong, Ling Hui Sun, Hai Qin Zhang, Lin Song Cheng

Keywords:

Nonlinear Seepage, Permeability, S/P Flooding, Threshold Pressure Gradient, Viscosity

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