Abstract

Abstract The number of zones during multi-stage hydraulic fracturing (MSHF) is increased. There have been cases of MSHF with 10 zones. Therefore, along with such important parameters as number of fractures, fracture length, fracture conductivity there is one more important parameter - the order of placing zones in operation in horizontal wells with MSHF. In this paper, the production of multi-stage hydraulic fracturing wells of one JSC Gazpromneft-NNG oilfield is analyzed and necessary calculations are made which allow to substantiate the placing zones in operation of MSHF well gradually from the bottom to the heel, with carrying out the refracturing the previous zone at the transition to next. Both the cumulative production in case of simultaneous and in case of gradually placing zones in operation is made, and the economic evaluation is carried out.

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