Experimental Studies on Gas drive and Gas-and-Water Oil Displacement

Abstract

A b s t r a c tFlooding is presently the most-commonly used EOR method. However, in fields with complicated geological structure and high-viscosity oil this method does not always produce the expected result. On the other hand, worker agents injected into the formation for residual oil displacement, moving along highly permeable sections penetrate the producer wells. This leads to premature flooding and low permeability oil-bearing zones remain aloof from development. This article presents test results obtained under laboratory conditions for air displacement, gas-water drive, surfactant solution with gas displacement through homogeneous and heterogeneous porous media under different attitude of bed. Experimental studies are aimed at maximum penetration of the working agent injected both in high permeability and low permeability zones for enhanced extraction of residual oil.