APPLICATION OF FLOW DIVERTING SEALING BIOBALLS DURING MULTISTAGE HYDRAULIC FRACTURING

The relevance of the study is caused by the need to optimize multistage hydraulic fracturing that will ensure correspondence of the parameters of completed wells with multistage hydraulic fracture and its expected parameters by selective isolation of interlayers to conduct selective hydraulic fracturing of each well zone. This will allow subsurface users to enhance the process profitability and increase wells daily production rate that will also lead to a positive economic effect. The main aim is to analyze the technology results and application example of flow diverting balls BioBalls on well no. 9101 of the Shaim oilfield, highlight the advantages of this method for multistage hydraulic fracturing. Objects: perforation flow diverting sealing balls BioBalls and its effectiveness for perforations isolation. Methods: determining the infectivity profiles of target intervals, comparing the rock pressure of the productive formations to determine the fracture initiating point, analyzing the hydraulic fracturing performance parameters to establish correspondence with the design data, comparing operation parameters of well no. 9101 before and after the multistage hydraulic fracturing to determine the effectiveness of the process, monitoring of well operation to determine operating modes in three months after the process. Results. The paper presents the characteristic of balls BioBalls and geological and physical characteristics of isolation objects; the infectivity profile of the target intervals under the injection is determined; correspondence of the multistage hydraulic fracturing effectiveness and design parameters is obtained; the time of the multistage hydraulic fracturing process is determined; the results of the multistage hydraulic fracturing process using flow diverting balls BioBalls are obtained, which demonstrates the effectiveness of the method in these conditions, namely the transfer of well no. 9101 to the existing well stock, an increase in oil production rates and a decrease in water cut.