Abstract
In order to clarify a displacement mechanism of fossil oil in crust by polymer solution, the polymer flow in undulating slit channel filled by a Newtonian fluid was experimentally examined. This study used a machine oil for the displaced fluid. The fluids injected into the channel were aqueous solutions of polyacrylamide (PAA) with two concentration and a solution of PAA(0.01wt%PAA) using an aqueous solution of 88wt% Glycerine as a solvent. In the undulating channel, the immiscible flow of a polymer solution with a Newtonian fluid was observed. The configuration of an interface between both fluids was related to the Theological property of polymer solution. It was found that the efficiency of displacement was affected by the channel geometry.
