FIELD: oil and gas production industry. SUBSTANCE: this is used in tapping of productive beds. This reliable device has body with unit for initiation of impact-acting detonation, and striker connected by rod with its driving unit which is brought into operation due to difference of pressure above and below piston. Striker driving unit is provided with detent in the form of collet comb with stop towards side opposite to rod stroke. Body in length of rod stroke value has corresponding recesses. EFFECT: high efficiency. 1 dwg
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Authors
Dates
1998-01-20—Published
1992-09-04—Filed