Experience of application of multistage hydraulic fracturing technology in a cased vertical well

This article presents the results of the first multi-stage hydraulic fracturing in a vertical well at a field in the Aktobe region. The field has been developed from the very beginning as one development object. The total height of the deposits in some places reaches 400 m; accordingly, since the start of development, all productive formations were perforated through without segregation. Field trial carried out on a well with perforation with a total thickness of 182 m revealed 4 productive formations. In order to open all productive layers with fractures and involve them in the development, it was decided to use a 4 stage layout with a hydraulic fracturing sleeve system with a repeated opening / closing cycle. As a result, after multi-stage hydraulic fracturing using this technology, a 4-fold increase in oil production was obtained. In the future, it is planned to apply this method to other candidate wells.

multistage hydraulic fracturing, permeability, fracture, conductivity, skin factor, oil content, Upper Permian deposits