Apparatus and methods for establishing secondary hydraulics...

Wells – Processes – Perforating – weakening – bending or separating pipe at an...

Reexamination Certificate

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C166S376000, C166S055300

Reexamination Certificate

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06973970

ABSTRACT:
A tool for making a cut inside a downhole tool, including a housing adapted to move in the downhole tool, a plurality of openings in a wall of the housing that provides a passage from inside the housing to an exterior of the housing, a plurality of cutters disposed in the housing that are adapted to protrude from the plurality of openings to the exterior of the housing, wherein the plurality of cutters provides 360 degree cutting regardless of the orientation of the tool, and an actuation mechanism adapted to force the plurality of cutters to protrude through the plurality of openings.

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patent: 4574889 (1986-03-01), Pringle
patent: 4577694 (1986-03-01), Brakhage, Jr.
patent: 4944351 (1990-07-01), Eriksen et al.
patent: 4981177 (1991-01-01), Carmody et al.
patent: 5249630 (1993-10-01), Meaders et al.
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patent: 5564675 (1996-10-01), Hill, Jr. et al.
patent: 5598864 (1997-02-01), Johnston et al.
patent: 6260850 (2001-07-01), Beall et al.
Schlumberger Data Sheet, “TRM-4P-DS and -4HP—DS Series”, pp. 7-8, undated.
Schlumberger Data Sheet, “TRDP/TRSP Series”, pp. 15-16, undated.
Schlumberger Data Sheet, “Shear Sleeve Shifting Tools”, pp. 22, undated.
Camco General Equipment Catalog, “Safety Control Systems”, 1980-1981, pp. 1359-1373.

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