Shaped charge perforating device

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With wall engaging packer or anchor

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Details

166 551, 175 46, E21B 4311

Patent

active

045836027

ABSTRACT:
An improved small diameter, high density shaped charge perforating apparatus is provided. The perforating apparatus includes an elongated carrier member having a plurality of shaped charge receiving stations spirally located therealong. The anterior and dorsal sections of the shaped charges extend outside the outer diameter of the carrier member and a length of helically wound detonator cord passes through an axial aperture in the dorsal section to retain the shaped charges in the carrier member. An alignment member is connected to one end of the carrier member to prevent rotational movement of the carrier member within the gun body and aligns the axis of perforation for each shaped charge with spotfaces on recesses in the periphery of the gun body.

REFERENCES:
patent: 2256419 (1941-09-01), Tinnerman
patent: 2402153 (1944-03-01), Elliott
patent: 2433231 (1945-10-01), Martin
patent: 2565788 (1947-08-01), Tow
patent: 2649046 (1953-08-01), Davis
patent: 2680406 (1949-03-01), Austin
patent: 2742857 (1956-04-01), Turechek
patent: 2750885 (1956-06-01), Schlumberger
patent: 2764938 (1956-10-01), Harcus
patent: 2980017 (1961-04-01), Castel
patent: 3175617 (1965-03-01), North
patent: 3346056 (1967-10-01), Bohn
patent: 3666030 (1972-05-01), Bohn et al.
patent: 3773119 (1973-11-01), Shore
patent: 4194577 (1980-03-01), Vann
patent: 4467878 (1984-08-01), Ibsen
WELEX, "Spiral Jet Perforator", Halliburton Company, Feb. 1981.

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