High density perforating gun system

Details High density perforating gun system High density perforating gun system

1996-10-01

1998-07-28

Dang, Hoang C.

Boring or penetrating the earth

Boring with explosion in inaccessible hole

Concave-shaped charge

102310, 166 551, E21B 43117

Patent

active

057851301

ABSTRACT:
A high density perforating gun having a carrier housing tube and an interior charge holder tube through which are mounted zinc alloy shaped charges in a phased relationship between about 135 and 145 degrees. The 135 to 145 degree phased relationship provides for an 18 shot per foot perforating gun system. The shaped charges of selected length are inserted into the carrier housing tube and held in place by fastener rings fitted to fastener ring slots. The nose ends of the shaped charges are fitted with ears to receive a detonating cord. This positions the primer cord in tension and generally coaxially with the carrier housing tube to prevent charge interference and assure sequential detonation.

REFERENCES:
patent: 4726431 (1988-02-01), Oestreich et al.
patent: 4844170 (1989-07-01), Gill
patent: 4960171 (1990-10-01), Parrott et al.
patent: 5007486 (1991-04-01), Ricles
patent: 5392857 (1995-02-01), Behrmann
patent: 5619008 (1997-04-01), Chawla et al.
patent: 5648635 (1997-07-01), Lussier et al.

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