Tapered cutting tool for reaming tubular members in well bore

Details Tapered cutting tool for reaming tubular members in well bore Tapered cutting tool for reaming tubular members in well bore

1991-03-21

1992-02-11

Bui, Thuy M.

Wells

Means for perforating, weakening, bending or separating pipe...

Cutter rotates circumferentially of pipe

408144, E21B 2900

Patent

active

050868381

ABSTRACT:
A cutting tool (20) has a tool body (26) positioned within a metal casing (12) for reaming the inner peripheral surface of the casing (12) to a uniform smooth inner diameter. Tool body (26) has a lower end body portion (28), a generally cylindrical intermediate body portion (30), and a reduced diameter upper end body portion (22) connected to intermediate body portion (26) by a sloping shoulder (24). Blades (46, 48) have a single column of cutting elements (50) secured thereto in end to end relation to define an outwardly sloping lower column section (51A) along lower end body section (28), a vertical intermediate column section (51B) along intermediate body portion (30) and an inwardly sloping upper column section (51C) along sloping shoulder (34).

REFERENCES:
patent: 4984488 (1991-01-01), Lunde et al.
patent: 5014778 (1991-05-01), Lunde et al.
patent: 5038859 (1991-08-01), Lunde et al.

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