METHOD OF WELL COMPLETION Russian patent published in 2015 - IPC E21B43/117 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and is intended for opening of the production deposits in oil and gas wells by creation of the perforation channels and additional treatment of the channel area by the chemical agent. Method of wells completion includes initiation of the explosive charge from the recess located in the charge end opposite to side of the charge initiation, the recess is lined with inert material, throwing, acceleration and compression of the cumulative lining material by the products of the explosive detonation, its collision at the central line of the charge, and creation of the cumulative jet During the cumulative lining throwing and compression it is under additional action due to forced interaction of the cumulative lining and one or several additional bodies, their collision and sliding of parts of the cumulative lining material relatively to the additional bodies with simultaneous rotation of parts of the cumulative lining material, collision of parts of the cumulative lining material on the central line of the charge with the cumulative jet creation. Additional body or additional bodies are made out of chemically active substance with density not exceeding the density of the cumulative lining material. The cumulative charge is installed in the casing string, the chemically active substance of the additional body is initiated during its throwing by the products of the explosive detonation and interaction with the cumulative lining, perforation channel is made in the casing string and surrounding production deposit by the created cumulative jet with simultaneous injection of the chemically active substance by the created cumulative jet, and filtration area in the production deposit surrounding the perforation channel increases through the entire length.

EFFECT: increased productivity of the oil wells, and deconsolidation of the perforation channel.

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