Mechanical Analysis of Stress Acted on Residual Oil Film by Polymer Solution

Abstract

Abstract: By means of continuity equation, momentum equation, constitutive equation and Polyflow (a software for calculation of fluid dynamics), the stress acted on residual oil film by polymer solution at oil-wet rock surface is calculated. The results show that the bigger the viscoelasticity of polymer solution, the greater the stress acted on the residual oil-film, and the more favorable to the oil-film deformation; the bigger the flow channel width, the greater the deviatoric stress acting on the oil-film, the more favorable to the oil displacement efficiency enhancement.

Key words: polymer solution, oil film, stress, viscoelasticity

CLC Number:

TE357.431

LIU Li-li, WANG Li-hui, ZHANG Ying, LIU Shu-qi. Mechanical Analysis of Stress Acted on Residual Oil Film by Polymer Solution[J]. Xinjiang Petroleum Geology, 2010, 31(5): 533-535.

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Mechanical Analysis of Stress Acted on Residual Oil Film by Polymer Solution

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