The article deals with the methodological approach to the research results correction of the rocks mechanical properties of the Turonian age based on the replacement of commonly used models of continuum mechanics for theoretical models of granulated solids mechanics. This method effectiveness is considered by the example of the Yuzhno-Russkoye field of the West Siberian Petroleum Province for producing interval T 1-2 dedicated to the Turonian Stage of Upper Cretaceous Series. Results correction of laboratory experiments of rocks strength properties is carried out that allows increasing the accuracy of their determination and improving the quality of geomechanical model of rocks that form the borehole for subsequent hydraulic fracturing design, and analyzing the bore hole stability correctly.

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Summary In fields where conventional production methods are applied to effectively recover hydrocarbons, well stimulation is a method to obtain additional production or to increase it at later stages of development. Therefore, well stimulation methods and technologies may be improved during field development after evaluating their influence on hydrocarbon recovery. In the case of hard-to-recover reserves for which economically feasible production requires application of well stimulation methods, these technologies should be designed to the maximum extent in the initial stages of field development and subjected to minor adjustments in future. This paper reviews the approach to screening horizontal well completion and stimulation technologies in low-temperature and low-permeable gas reservoirs with minor formation overpressure. It also describes trial application of oil-based frac technology in a vertical pilot well and its adaptation to multi-zone horizontal well conditions.

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