%0 Journal Article
%T Numerical Calculation of Viscous-Elastic Fluid Flooding Residual Oil Film in the Complex Pore
%A Lili Liu
%A Chao Yu
%A Lihui Wang
%A Lu Liu
%J Open Journal of Fluid Dynamics
%P 147-151
%@ 2165-3860
%D 2013
%I Scientific Research Publishing
%R 10.4236/ojfd.2013.33019
%X <p class=\"MsoNormal\">
	<span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\">In order to
analyze the stress and deformation of different permeability of residual oil
film in the complex pore</span><span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\">,</span><span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\"> </span><span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\">which</span><span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\"> </span><span lang=\"EN-US\" style=\"letter-spacing:-0.1pt;\">are</span><span lang=\"EN-US\"> affected by the visco</span><span lang=\"EN-US\">us-</span><span lang=\"EN-US\">elasticity of the fluid, the hydrodynamic displacement
mechanism is explored from the stand</span><span lang=\"EN-US\">-</span><span lang=\"EN-US\">point
of hydrodynamics, </span><span lang=\"EN-US\">that</span><span lang=\"EN-US\"> is</span><span lang=\"EN-US\">,</span><span lang=\"EN-US\"> the residual oil film displaced by alternating
injection of different concentrations of the polymer solution, viscous-elastic
fluid flow equation is established in the complex pore by choosing continuity
equation, motion equation and the upper convected Maxwell constitutive equation</span><span lang=\"EN-US\">.</span><span lang=\"EN-US\"> The flow field is computed by using the me</span><span lang=\"EN-US\">thod of numerical analysis</span><span lang=\"EN-US\">.</span><span lang=\"EN-US\"> Not only the stress and deformation of residual
oil film on the different permeability of mi</span><span lang=\"EN-US\">c</span><span lang=\"EN-US\">ro pores, but also the analysis of the flooding mechanism
of alternating injection of different concentrations of the po</span><span lang=\"EN-US\">lymer solution </span><span lang=\"EN-US\">is</span><span lang=\"EN-US\"> got. The results show that the larger the viscous-elasticity
of polymer solution is, the bigger the normal deviatoric stress acting on the
residual oil film </span><span lang=\"EN-US\">is;</span><span lang=\"EN-US\"> the distribution of
normal deviatoric stress has the abrupt change. The stronger the viscous-elasticity
of the polymer solution is, the bigger the horizontal stress difference acting
on the residual oil film </span><span lang=\"EN-US\">is and</span><span lang=\"EN-US\"> the more obvious the
deformation is; the high-concentration polymer solution is suitable for
high-permeability micro pores</span><span lang=\"EN-US\">.</span><span lang=\"EN-US\"> Low-concentration
polymer solution is suitable for medium and low-permeability micro pores. Alternating
injection of polymer solution can improve
%K Complex Pore
%K Residual Oil Film
%K Deformation
%K Viscous-Elasticity
%K Permeability
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=37031