Key words: multistage refracturing, new technologies, optimization of multistage hydraulic fracturing, multistage completion tools activated without using frac balls
This article presents the state of efficiency improvement of working assets development and production recovery of producing wells by means of implementation of multistage refracturing on horizontal wells with ball activated multistage well completion. Possible ways of hydraulic refracturing implementation are considered in four various technologies. Risk analysis, drawbacks and advantages are provided within each recommended method. Special focus is on the technology optimization of multistage hydraulic fracturing. The practice in testing of multistage fracturing in the Company through the technology of multistage completion tools activated without using frac balls is presented, lessons learned, possible ways of optimization and the replication to other geological conditions are also presented in this article.
