Reamer shoe

Details Reamer shoe Reamer shoe

2006-01-10

2006-01-10

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Casing shoe type

Reexamination Certificate

active

06983811

ABSTRACT:
A reamer shoe (1) for mounting on a tubing string has a reaming area (5) supporting a plurality of discrete reaming members (6) typically formed as simple geometrical shapes. The reaming members provide complete circumferential coverage of the shoe body (2) but the individual reaming members are non-continuous and do not fully extend either longitudinally along or circumferentially around the reaming area on the shoe body. The invention therefore provides a reamer shoe for reaming a bore in preparation for receiving casing, which is effective on rotation or reciprocation, regardless of direction or speed.

REFERENCES:
patent: 1153311 (1915-09-01), Montgomery
patent: 3011556 (1961-12-01), Best
patent: 3268274 (1966-08-01), Ortloff et al.
patent: 4385669 (1983-05-01), Knutsen
patent: 4467879 (1984-08-01), Burge
patent: 5390750 (1995-02-01), Deken et al.
patent: 5697442 (1997-12-01), Baldridge
patent: 5957223 (1999-09-01), Doster et al.
patent: 2 166 177 (1986-04-01), None
patent: WO 96/28635 (1996-09-01), None
patent: WO 99/37881 (1999-07-01), None
International Search Report dated Mar. 7, 2001, for application serial No. PCT/GB00/04704.

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