METHOD FOR TREATING A WELL HAVING A PLURALITY OF PERFORATED INTERVALS (VARIANTS)

摘要

The claimed invention relates to methods for stimulating an inflow of oil and/or gas from a well bore with a plurality of perforated intervals. According to the claimed method, a hydraulic fracturing fluid is pumped into a well containing a plurality of perforated intervals in order to create and propagate a hydraulic fracture in at least one of the perforated intervals; next, a suspension containing an insoluble degradable material and oppositely charged polyelectrolytes and/or precursors thereof is pumped into the well; furthermore, a degradable viscous phase, which is immiscible with the hydraulic fracturing fluid, is formed from the oppositely charged polyelectrolytes and/or precursors thereof; and a degradable plug is formed in at least one of the perforated intervals, the fracture or the well bore; and the hydraulic fracturing fluid stream is diverted into the next perforated interval with subsequent degradation of the plug in at least one of the perforated intervals, the fracture or the well bore during a required period of time. According to a different variant of the claimed method, a suspension containing an insoluble degradable material, a charged surfactant, and an oppositely charged polyelectrolyte and/or precursor thereof is pumped into the well.