FIELD: oil and gas production.
SUBSTANCE: unit retaining position of booster and detonating cord in device for transfer of detonation consists of bushing in form of cylinder portion with axial orifice, and of disk with orifice and collar inside orifice. The unit is equipped with a nut with an internal conic shaped portion. A cylinder portion on the end counter relative to the disk has a leaf-type collet. On external side of the cylinder portion there is made thread whereon there is screwed the nut enveloping the leaf-type collet with internal conic-shaped portion.
EFFECT: increased reliability of retaining position of booster and detonation cord.
7 cl, 10 dwg
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