Downhole impeller device

Details Downhole impeller device Downhole impeller device

2006-09-06

2008-11-25

Dang, Hoang (Department: 3672)

Wells

Processes

Cleaning or unloading well

C166S173000, C166S177700, C175S323000, C175S324000

Reexamination Certificate

active

07455113

ABSTRACT:
A downhole impeller device for use within a well, comprising: a body connectable to a drill string and having an external diameter smaller than the well diameter so as to form an annulus between the body and the well; and one or more impeller members extending from the outer surface of the body such that rotation of the or each impeller member impels drilling fluid within the annulus.

REFERENCES:
patent: 2246418 (1941-06-01), Froome et al.
patent: 3085639 (1963-04-01), Fitch
patent: 3194331 (1965-07-01), Arnold
patent: 4049066 (1977-09-01), Richey
patent: 4248411 (1981-02-01), Wagster et al.
patent: 4747452 (1988-05-01), Clark
patent: 4811800 (1989-03-01), Hill et al.
patent: 5040620 (1991-08-01), Nunley
patent: 5937957 (1999-08-01), Swietlik
patent: 6056073 (2000-05-01), Boulet
patent: 6227291 (2001-05-01), Carmichael et al.
patent: 6349779 (2002-02-01), Gilbert
patent: 6575239 (2003-06-01), Allen
patent: 6695058 (2004-02-01), French
patent: 2001/0030046 (2001-10-01), Haseloh
patent: 2412393 (2005-09-01), None

Affiliated with

Also associated with

Rating

Downhole impeller device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole impeller device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole impeller device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4030086