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In a perforating apparatus, a series of explosive charges are mounted on a frangible strap which is pressfit within a frangible carrier which is suspended from a conventional form of wire line tool in such a way that when the charges are detonated the carrier assembly will be completely disintegrate

In a perforating apparatus, a series of explosive charges are mounted on a frangible strap which is pressfit within a frangible carrier which is suspended from a conventional form of wire line tool in such a way that when the charges are detonated the carrier assembly will be completely disintegrated and the wire line tool can be retrieved for subsequent reuse.

대표청구항 ▼

A perforating apparatus adapted for use in a cased well bore comprising: a hollow carrier having an elongated, solid tubular portion provided with an inner wall surface, and opposite end caps disposed in sealed relation to opposite ends of said tubular portion; a charge-mounting, unitary strap inser

A perforating apparatus adapted for use in a cased well bore comprising: a hollow carrier having an elongated, solid tubular portion provided with an inner wall surface, and opposite end caps disposed in sealed relation to opposite ends of said tubular portion; a charge-mounting, unitary strap inserted in said carrier, said strap being of elongated, generally rectangular configuration and of a width substantially corresponding to the internal diameter of said tubular portion and provided with spaced openings substantially along its length, each for insertion of a charge therein, said strap dimensioned for snug-fitting insertion into said carrier; a plurality of explosive charges each having an outer casing of a length substantially corresponding to the internal diameter of said tubular portion, said casing comprising a thin-walled casing portion inserted into one of said openings, said strap and said charges arranged in mutually perpendicular relation to one another and disposed in close-fitting engagement to said inner wall surface of said tubular portion, one end of said casing for each charge provided with an opening for insertion of said blasting chord therethrough; and a blasting cord extending through said carrier and connected to said charges for detonation thereof, said carrier being composed of a frangible material capable of being disintegrated upon detonation of said charges.