Debris reduction perforating apparatus

Details Debris reduction perforating apparatus Debris reduction perforating apparatus

2008-04-22

2008-04-22

Wright, Giovanna C (Department: 3672)

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

C166S055000, C166S297000, C175S004600

Reexamination Certificate

active

07360587

ABSTRACT:
A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An energy absorbing charge holder (104) has a gas expansion region and a detonating cord receiving area to receive the detonating cord therein (116). The energy absorbing charge holder (104) also has a plurality of charge receiving locations that closely receive the shaped charges (102) therein such that upon detonation of the shaped charges (102), energy is transferred from the cases of the shaped charges (102) to the energy absorbing charge holder (104), thereby reducing fragmentation of the cases.

REFERENCES:
patent: 4191265 (1980-03-01), Bosse-Platiere
patent: 4428440 (1984-01-01), McPhee
patent: 4583602 (1986-04-01), Ayers
patent: 4643097 (1987-02-01), Chawla et al.
patent: 5837925 (1998-11-01), Nice
patent: 6371219 (2002-04-01), Collins et al.
patent: 6464019 (2002-10-01), Werner et al.
patent: 2005/0235859 (2005-10-01), Myers et al.
patent: 2006/0102352 (2006-05-01), Walker
patent: 2 398 092 (2004-08-01), None
Patents Act 1977; Search Report under Section 17; Jan. 6, 2006; 1 page.

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