Key words: well logging, Y-tool, horizontal wells, multi-stage hydraulic fracturing.
Western Siberian and Volga region oil fields, as a rule, are characterized with low reservoir pressure and exploitation by the method of mechanized extraction, that does not allow to assess the productivity in steady mode of fluid output (extraction) (flow rate), that is easily implemented in gushing wells. That’s why, geophysical surveys (GS) are performed in overhaul periods, after stopping the well and extraction borehole equipment глушения скважин (поменял структуру предложения чуток). In that case, is sufficiently disrupted work mode of well and reservoir, depression and flow rate created with GS does not correspond to the operating mode. Increasing the number of horizontal wells shows the urgency of the problem of assessing the efficiency of the multistage hydraulic fracturing. To eliminate these restrictions can be applied the technology of ESP bypasses (Y-Tool), where the borehole equipment is delivered on the CT below the depth of descent pump in horizontal wellbore interval.
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