METHOD FOR TREATMENT OF THE BOTTOMHOLE FORMATION ZONE (OPTIONS) Russian patent published in 2022 - IPC E21B43/248 E21B43/18 

FIELD: bottomhole formation zone treating methods.

SUBSTANCE: inventions group is proposed: a method for treating the bottomhole formation zone (options). The method for treatment of the bottomhole formation zone includes the delivery of gas generating charges to the productive formation interval and burning in it. The method also includes the subsequent removal from the interval of the productive formation of the well fluid with bridging elements that have entered it from the bottomhole formation zone. For treatment, a well is selected with a pay formation thickness of at least 1.5 m and a clay content of not more than 10%, with a minimum distance to the oil-water contact surface of 4 m, with a gradual decrease in productivity over 4 months by at least 20%. The method also includes determining the location of the zone with increased hydraulic resistance and its size. The method also includes calculating the volume of explosions from the condition of formation of at least three cracks with a length exceeding the length of the zone of increased hydraulic resistance in the bottomhole zone by at least 33%. Also, the method includes putting the well into operation with an increase in reservoir production by at least 10% of the value before treatment.

EFFECT: increasing the efficiency of treatment of the bottomhole formation zone by taking into account the location of the zone with increased hydraulic resistance and its size.

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