The purpose of the study is to justify selection of a certain EOR technology based on the results of its practical application. The results of the study are needed to plan economically effective operation of TATNEFT Company in the short term. The paper describes processes taking place in a reservoir when different chemical agents have been injected. Positive and negative factors affecting the efficiency of technologies are described; results of different technologies in the same initial conditions are evaluated. The authors analyze the performance of different EOR technologies in the same area and in the same well.
