At the moment, the issue of reducing water cut during the development of carbonate fractured reservoirs is relevant. In the work, the object of the study is the carbonate deep reservoirs of the R. Trebs field. According to the field development analysis, there are production wells with sharp unpredictable breakthrough of injected water.In order to increase the coverage of pay zones by waterflooding, it is necessary to use methods aimed at limiting the filtration of injected water into water-flooded intervals.High formation temperature and mineralization of formation water are complicating factors in the selection of the injection profile alignment (runway) technology.Taking into account the criteria specified in the work, potential candidates for testing the technology were selected for the runway.The article analyzed the advantages and disadvantages of the existing runway methods used when exposed to injection wells. The criteria for the applicability of various technologies based on the use of: polymer/gel compositions, emulsion compositions, including reverse emulsions, injection of aqueous salt solutions, silicate, thermotropic and complex reagents are highlighted. Technologies and compositions based on water-soluble polymers that form viscoelastic compositions when crosslinkers of various nature are added are recognized as the most promising for the conditions of the fractured reservoir of the Trebs field.Particular attention is paid to laboratory experiments aimed at studying the physical and chemical properties of crosslinked polymer systems, conducting filtration experiments, determining the applicability of the technology for the geological and physical conditions of the study object.According to the results of physicochemical experiments, such parameters as the time of dissolution of reagents, compatibility with formation water, time and temperature of gelling were determined. Based on the shear test, rheological parameters of the investigated polymer systems are determined. Testing was carried out to determine the conditions under which the crosslinked polymer composition breaks down.Filtration experiments were carried out on linear and volumetric models of the formation using core material from the Trebs field to determine the reagent with the highest colmating abilities calculated from the residual resistance factor.