High density perforating system

Details High density perforating system High density perforating system

1996-03-08

1997-04-08

Nelson, Peter A.

Ammunition and explosives

Blasting

Detonation wave modifying

102307, 102312, 102313, 102476, F42B 102, F42D 300

Patent

active

056190085

ABSTRACT:
A well perforating apparatus for generating a plurality of material perforating jets. A base has a plurality of recesses or apertures, and a liner is proximate to the base and is indented into each recess or aperture. Explosive charges contact the indented surfaces of the liner to form multiple shaped charges. A detonator activates the explosive material to collapse the liner segments proximate to the explosive charges and to generate a plurality of perforating jets. In one embodiment of the invention, the base initially comprises a planar material that can be formed into a geometric shape for insertion into a cylindrical housing or wellbore. The invention substantially reduces manufacturing costs and is especially useful in permitting a high density shot pattern to be generated by the perforating jets.

REFERENCES:
patent: 2833213 (1958-05-01), Udry
patent: 2876843 (1959-03-01), Huber
patent: 3313234 (1967-04-01), Mohaupt
patent: 3739723 (1973-06-01), Hakala
patent: 4253523 (1981-03-01), Ibsen
patent: 4773299 (1988-09-01), Oestreich et al.
patent: 4850438 (1989-07-01), Regalbuto
patent: 4974515 (1990-12-01), Busch et al.
patent: 5070786 (1991-12-01), Hartman et al.
patent: 5542480 (1996-08-01), Owen et al.

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