Boring or penetrating the earth – With tool shaft detail – Means other than tool structure to induce fluent flow
Reexamination Certificate
2011-07-26
2011-07-26
Stephenson, Daniel P (Department: 3676)
Boring or penetrating the earth
With tool shaft detail
Means other than tool structure to induce fluent flow
C175S339000, C175S340000
Reexamination Certificate
active
07984772
ABSTRACT:
In one aspect of the invention, a downhole centrifugal drilling fluid separator has a bore within a tubular body comprising a central axis. The bore is formed to receive drilling fluid comprising particulate matter. At least one fin rigidly fixed within the bore and at least one port formed in a wall of the tubular body. As the drilling fluid flows through the tubular body the at least one fin creates a rotary motion within the drilling fluid forcing a portion of the particulate matter away from the central axis and through the at least one port in the tubular body.
REFERENCES:
patent: 3094175 (1963-06-01), Jackson
patent: 3400819 (1968-09-01), Burdyn
patent: 4103749 (1978-08-01), Erickson
patent: 4245710 (1981-01-01), Dolezal et al.
patent: 4436166 (1984-03-01), Hayatdavoudi et al.
patent: 4475603 (1984-10-01), Hayatdavoudi
patent: 4488607 (1984-12-01), Hayatdavoudi et al.
patent: 4512420 (1985-04-01), Hayatdavoudi et al.
patent: 4515229 (1985-05-01), Drummond et al.
patent: 4587024 (1986-05-01), Hayatdavoudi
patent: 4646858 (1987-03-01), Strickland
patent: 4670161 (1987-06-01), Hayatdavoudi
patent: 4673045 (1987-06-01), McCullough
patent: 4688650 (1987-08-01), Hayatdavoudi et al.
patent: 5143162 (1992-09-01), Lyon et al.
patent: 5303784 (1994-04-01), Awdujewski et al.
patent: 5355967 (1994-10-01), Mueller et al.
patent: 5490571 (1996-02-01), Hanns et al.
patent: RE39292 (2006-09-01), Latos et al.
patent: 2005/0284641 (2005-12-01), Watkins
patent: 2007/0027036 (2007-02-01), Polizzotti et al.
patent: 2010/0175869 (2010-07-01), Cobb
Dahlgren Scott S.
Fox Joe
Hall David R.
Lundgreen David
Stephenson Daniel P
Townsend, III Philip W.
Wilde Tyson J.
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