Downhole device

Details Downhole device Downhole device

2011-01-11

2011-01-11

Gay, Jennifer H (Department: 3672)

Wells

Guide for device or conduit

On sucker or pump rod

C166S241100, C166S241500, C175S076000, C175S325300

Reexamination Certificate

active

07866384

ABSTRACT:
The invention relates to a downhole device for incorporation into a downhole string and movement in a wellbore. The device comprises a body member, at least one roller arranged on the device to engage the inner surface of the wellbore and means to orient the device in the wellbore. The means to orient the device are provided on the or each roller. Preferably the means to orient the device comprise a projecting portion provided on the or each roller which projects radially outwardly from the body member. The projecting portion can be an eccentrically-shaped portion of the or each roller.

REFERENCES:
patent: 4620802 (1986-11-01), Harrel et al.
patent: 4793412 (1988-12-01), Rivas et al.
patent: 6684965 (2004-02-01), Bakke
patent: 7395881 (2008-07-01), McKay et al.
patent: 2002/0139538 (2002-10-01), Young et al.
patent: 2003/0075321 (2003-04-01), Hall
patent: 2004/0055786 (2004-03-01), Maguire et al.
patent: 1 231 866 (1988-01-01), None
patent: 2275284 (1994-08-01), None
patent: WO 01/40615 (2001-06-01), None
patent: WO 2005/111368 (2005-11-01), None

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