| 摘要 |
FIELD: oil production, particularly perforators using direct fluid action, for instance, abrasive jets. ^ SUBSTANCE: perforator comprises hollow body with outer depressions made as two mating planes. One plane has orifice communicated with body interior and adapted to receive jet nozzle. Hard-alloy deflecting plate is in another depression plane. Seat with shutoff member is formed in lower body part. The body has protective plates. Jet nozzles include outlets shaped as elongated conical members. The jet nozzles are installed in orifices by means of nozzle holders provided with conical sections projecting beyond body outline. ^ EFFECT: increased service life and operational efficiency. ^ 1 dwg |
