Selectable output well perforator and method for producing...

Ammunition and explosives – Blasting – Detonation wave modifying

Reexamination Certificate

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C102S476000, C089S001150

Reexamination Certificate

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07546806

ABSTRACT:
Various shaped charges and methods of operation produce multiple jets in various profiles by employing multiple initiation points to address various earthen formations and producing different types of perforations in well bores. The shaped charge device includes a configuration of components wherein multiple detonation tracks are used to allow selective initiation and operation. Dual or quad initiation may be provided to initiate operation.

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patent: 5229542 (1993-07-01), Bryan et al.
patent: 5479860 (1996-01-01), Ellis
patent: 5792977 (1998-08-01), Chawla
patent: 5939663 (1999-08-01), Walters et al.
patent: 6925924 (2005-08-01), Baker et al.

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