STUDY ON GAS AND GAS-AND-WATER OIL DISPLACEMENT USING VARIOUS VERSION WATER-GAS BLENDS IN HOMOGENEOUS AND HETEROGENEOUS POROUS MEDIUM
Flooding 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 eventually leads to a decrease in oil production. Therefore we need to ensure the injected working fluid penetration into the high permeability as well as low permeability zones and extracting the residual oil to the maximum extent. With this purpose this article presents test results obtained under laboratory conditions at different bedding of homogeneous and heterogeneous porous medium with air displacement interlayers, as well as by injecting water and air through various porous media at a regular form (batching) with water-gas, SAA-gas mixtures in various options.