Abstract
The feasibility study of pilot industrial works efficiency of cyclic steam and water injec-tion of 6 cells of the of the Karazhanbas field Western section is carried out. The assess-ment was carried out on the basis of a comparison of technical and economic indicators for two versions of pilot tests: the first one implies the use of the technology of cyclic steam and water injection into the formation, the second one is predictive and implies the continuation of water injection. In the first pair of cells involved, where two steam injection cycles and one water injection cycle were implemented at the analysis date, each subsequent cycle shows an increase in oil growth relative to the base version with cold water injection. The observed positive dynamics of oil production in the reacting wells is the result of the evidence of two processes occurring in the reservoir at this time - thermal (decrease of oil viscosity, increase of mobility, decrease of skin factor) and dynamic (increase of res-ervoir pressure caused by a significant increase of compensation.) Feasibility study of cyclic injection and injection of water in the Western section of Karazhanbas oil field allows to conclude that the cyclic steam and water injection is more preferable as compared with the water injection version.
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