Through tubing perforating gun

Details Through tubing perforating gun Through tubing perforating gun

2011-08-16

2011-08-16

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Boring with explosion in inaccessible hole

Firing chamber movable in bore relative to carrier or...

C175S004600, C166S297000

Reexamination Certificate

active

07997353

ABSTRACT:
An apparatus for perforating wells has perforating charges and a means for retaining the perforating charges in a first array The first array has a first maximum cross sectional area; and means for expanding the perforating charges into a second three dimensional array The second array has a second maximum cross sectional area larger than the first maximum cross sectional area. Also an apparatus for perforating wells has a plurality of perforating charges and a means for retaining the perforating charges in a first array The first array has a primary axis and a first maximum cross sectional area and the perforating charges having firing directions oriented approximately perpendicular to the primary axis; and means for expanding the perforating charges into a second array, the second array has a second maximum cross sectional area larger than the first.

REFERENCES:
patent: 2690123 (1954-09-01), Kanady
patent: 2883932 (1959-04-01), Caldwell
patent: 2947253 (1960-08-01), Cirilo
patent: 5095801 (1992-03-01), Lopez de Cardenas
patent: 5816343 (1998-10-01), Markel et al.
patent: 6591911 (2003-07-01), Markel et al.
patent: 2004/0206503 (2004-10-01), Bell et al.
Ott, R.E., et al., Simple Method Predicts Downhole Shaped-Charge Gun Performance, SPE Production & Facilities, Aug. 1994, Society of Petroleum Engineers, pp. 171-178, pp. 292-295, SPE 27424 (includes Discussion and Author's Reply).

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