METHOD AND SYSTEM FOR HYDRAULIC FRACTURING Russian patent published in 2018 - IPC E21B43/26 E21B34/14 

FIELD: mining.

SUBSTANCE: hydraulic fracturing operation is done in open hole without annular space isolation. Annular space is spanned by extendable members that are located behind isolation valves. Given group of telescopic members can be uncovered and the annular space is spanned by extendable members that are located behind isolation valves. Hydraulic fracturing fluid under pressure can be pumped through telescopically extended pipelines and fracturing the required section of the formation. In a proper formation, cementing is not needed to maintain wellbore integrity. Extendable members can optionally have screens. Normally, the nature of the formation is such that gravel packing is also not required. Production string can be inserted into the string with the telescoping devices and the formation portions of interest can be produced through the selectively exposed extendable members.

EFFECT: technical result is to increase the efficiency of hydraulic fracturing of formation.

18 cl, 8 dwg