Author(s)

P. Barreau, D. Lasseux, H. Berlin & A. Zaitowf

Abstract

Effect of adsorbed polymers on relative permeability and capillary pressure: a pore scale numerical study P. Barreau,* D. Lasseux,* H. Berlin,* A. Zaitowf °Laboratoire "Energetique et Phenomenes de Transfert", ENSAM, 33405 Talence Cedex, France ^Institut Frangais du Petrole, 92506 Rueil-Malmaison, France 1 Introduction Waterflooding is one of the most commonly employed method for oil recovery from underground reservoirs. Due to different factors such as rock heterogeneities and unfavorable viscosity ratio between oil and water, this technique becomes however sometimes inefficient. To remedy the excessive water mobilization, injection of hydrosoluble polymers has been used. The aim of this technique is to place a selective barrier which remains permeable to oil but lowers water mobility (Zaitoun & Kohler\ Broseta & al.^). During a polymer-solution injection, macromolecules are adsorbed on pore walls and three tendencies result (Zaitoun & Kohler^) : i) water mobilit

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