Cyclic water injection belongs to the group of EOR methods but the incremental recovery from its impact is poor and is comparable with accuracy of the total production measurement. So application of such treatment we call advanced waterflood.

Physical mechanism of oil recovery increase by cyclic water injection is a well-established phenomenon although the theory does not define the location of wells with periodical injection, amplitudes of injection variation and duration of cycles. In this paper the authors describe the framework of investigation for determination of the unknown parameters on the basis of streamline reservoir simulation.

The streamline calculation gives comprehensive visualization and quantitative description of the process and makes apparent the search of effective variant of the technology. The calculations were performed on the South-Usanovskoe formation of Urnenskoe oil field.

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