Abstract
The paper reviews the feasibility of oil recovery increase in embedded-ingomogeneous reservoir with hydrodynamically isolated layers of various permeability applying chemical agents. As the chemical agents, electrical-chemical modified natural water (catolyte) and catolyte-based polyacrylamide agent (PAA) are used. For oil recovery increase of the inhomogeneous reservoirs, an ecologically safe catolyte with all the properties characteristic for the alkali is applied. For the alignment of displacement front in the layers of different permeability and the flooding decrease of high-permeable reservoir, the polyacrylamide is used. This combined method was previously conducted in homogenous model and showed high efficiency. It allowed testing the method of oil displacement in embedded-ingomogeneous reservoir model. The effectiveness is achieved using catolyte and catoly- te-based PAA solutions in embedded-inhomogeneous reservoir in oil displacement process. Due to this, the low-permeability la-yer is much more involved into the process and the oil recovery factor increases.
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