Oil well perforators

Details Oil well perforators Oil well perforators

2011-08-02

2011-08-02

Wright, Giovanna C (Department: 3672)

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

C166S055200, C175S004600, C102S476000

Reexamination Certificate

active

07987911

ABSTRACT:
An oil and gas well shaped charge perforator is provided comprising a housing, a high explosive, and a liner with a further insert liner where the high explosive is positioned between the liner and the housing. In use the high explosive will collapse the liner and insert causing two cutting jets to form. The insert may substantially cover the surface area of the liner or it may over only partially cover the liner, such as the apical portion of the liner or the base portion of liner. Alternatively the insert may be varied in thickness across the surface area of the liner. Typically the thickness of the liner may be between 1 and 10% of the liner diameter and the thickness of the insert may be between 1 and 200% of the thickness of the liner. The insert may be produced during the manufacture of the liner, but preferably the liner will be a retro fitted item.

REFERENCES:
patent: 3025794 (1962-03-01), Lebourg et al.
patent: 4498367 (1985-02-01), Skolnick et al.
patent: 4766813 (1988-08-01), Winter et al.
patent: 5522319 (1996-06-01), Haselman et al.
patent: 6021714 (2000-02-01), Grove et al.
patent: 6668726 (2003-12-01), Lussier
patent: 2002/0112564 (2002-08-01), Leidel et al.
patent: 2002/0162474 (2002-11-01), Pratt et al.
patent: 2003/0037692 (2003-02-01), Liu
patent: 2005/0011395 (2005-01-01), Langan et al.
patent: 2007/0056462 (2007-03-01), Bates et al.
patent: 2007/0214991 (2007-09-01), Ronn et al.
patent: 23 06 859 (1974-08-01), None
patent: 2927556 (1985-05-01), None
patent: 196 30 339 (1997-01-01), None
patent: 437 992 (1991-07-01), None
patent: 1 124 433 (2002-09-01), None
patent: 1241433 (2002-09-01), None
patent: 2 116 298 (1983-09-01), None
patent: 2 298 910 (1996-09-01), None
patent: 2 303 687 (1997-02-01), None
patent: 2303687 (1997-02-01), None
patent: 2 333 825 (1999-08-01), None
patent: 2 389 888 (2003-12-01), None
International Search Report mailed Mar. 6, 2006.
United Kingdom Search Report dated Mar. 7, 2006.
Written Opinion of the International Searching Authority, received May 7, 2007.

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