FIELD: oil and gas industry.
SUBSTANCE: invention refers to drilling and operating of oil, gas and pressure wells, particularly to facility for secondary formation exposing by means of creation of lengthwise perforation apertures in cased (operational) columns and by means of forming filtration channels in bottom hole zone. The jet head for the hydro mechanical perforator has a channel producing a jet; the said channel is designed with a conic converging nozzle, which forms a boosting chamber 2, connected with a cylinder portion 1 of the jet head channel. Approach angle of the conic nozzle is 13°-14°. The length of the boosting chamber 2 is 1.3-1.7 of the channel diameter of the jet head.
EFFECT: creation of laminar mode of motion of liquid facilitating efficiency and reliability of jet head operation.
2 dwg
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