Roller reamer

Details Roller reamer Roller reamer

2006-01-25

2010-02-16

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S323000

Reexamination Certificate

active

07661489

ABSTRACT:
This invention describes a reaming tool (10) for attachment to a drill string having a body (12) that has connection means (14a,14b) at either end for attachment to a drill string, at least one roller reamer (16) rotatably mounted to the body (12), and at least one channel (18) extending on the body positioned to intersect with the roller reamer (16). This ensures that flushing fluid flow is directed to each roller reamer (16).

REFERENCES:
patent: 2128416 (1938-08-01), Howard et al.
patent: 3306379 (1967-02-01), Kloesel, Jr. et al.
patent: 4189012 (1980-02-01), Garrett
patent: 4231437 (1980-11-01), Swersky et al.
patent: 4480704 (1984-11-01), May et al.
patent: 4497384 (1985-02-01), Hart
patent: 4793425 (1988-12-01), White
patent: 5190379 (1993-03-01), White
patent: 5649603 (1997-07-01), Simpson et al.
patent: 5868212 (1999-02-01), McManus
patent: 7000713 (2006-02-01), Crooks
patent: WO 2004/042184 (2004-05-01), None

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