METHOD FOR CONDUCTING HYDRAULIC FRACTURING IN INCLINED-DIRECTIONAL OIL WELL OPERATING SINGLE PRODUCT RESERVOIR Russian patent published in 2021 - IPC E21B43/26 E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, in particular, for the implementation of hydraulic fracturing in an inclined-directional well that has opened and operates one productive reservoir. A method is proposed for conducting hydraulic fracturing in an inclined-directional oil producing well operating one productive reservoir, including the following stages: the well is capped; downhole equipment is extracted from the well; an arrangement consisting of (from bottom to top): a plug, a lower mechanical packer, a hydraulic fracturing port, an upper hydraulic packer, a mechanical coupling locator, a hydraulic emergency adapter, a connecting element with a tubing string is lowered into the well on the tubing string; the mechanical action packer is activated, after which the hydraulic action packer is activated; through the arrangement, the breakdown liquid with the proppant is injected under pressure, as a result of which the liquid passes through the port and technological fractures of the hydraulic fracturing are created in the productive formation, filled with the proppant; after hydraulic fracturing, gel disintegration and failure of the hydraulic packer, the solution with viscous bundles is pumped through the annulus space for circulation in order to wash out the proppant residues from the inter-packer space for subsequent development of the well.

EFFECT: ensuring the implementation of large-volume hydraulic fracturing in an inclined-directional well, making it possible to optimize the time cycle of measures during hydraulic fracturing.

1 cl, 7 dwg