FIELD: oil and gas production, particularly equipment to perform perforating works in oil and gas wells.
SUBSTANCE: charging unit comprises case 1 with seats adapted to guide shaped charges 2 and charge activating means. The case is made as tube. Shaped charges are oriented in pairs inside the case. Two charges of one pair are at 180° one with respect to another. Charge seats for neighboring lower shaped charge pairs are arranged in the case so that the first charge seat in upper shaped charge pair is shifted at obtuse or oblique angle with respect to the first charge seat for lower shaped charge pair.
EFFECT: increased cumulative effect.
4 cl, 2 dwg
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|---|---|---|---|
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|
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RU2766463C1 |
