Boring or penetrating the earth – Automatic control – In response to drilling fluid circulation
Reexamination Certificate
2005-03-16
2008-08-05
Gay, Jennifer H (Department: 3676)
Boring or penetrating the earth
Automatic control
In response to drilling fluid circulation
C175S025000
Reexamination Certificate
active
07407019
ABSTRACT:
A method of dynamically controlling open hole pressure within a wellbore having a drill string positioned therein. The method comprising the steps of pumping a fluid down the drill string, into an annulus formed by the drill string and the interior of the wellbore, and then subsequently up the annulus to the surface of the ground; selectively applying wellhead pressure to the annulus through selectively pumping an additional quantity of the fluid or a quantity of a secondary fluid across the annulus; and, controlling the application of wellhead pressure applied to the annulus by controlling one, or both, of (a) the operation of a wellhead pressure control choke, and (b) the flow rate of the additional quantity of fluid or the secondary fluid pumped across the annulus, to thereby maintain open hole pressure within a desired range.
REFERENCES:
patent: 2947318 (1960-08-01), Odom
patent: 3470971 (1969-10-01), Dower
patent: 3497020 (1970-02-01), Kammerer
patent: 3534822 (1970-10-01), Campbell et al.
patent: 3747698 (1973-07-01), Chapman
patent: 3786878 (1974-01-01), Chapman
patent: 3946559 (1976-03-01), Stevenson
patent: 3970335 (1976-07-01), Curington
patent: 4243252 (1981-01-01), Johnson
patent: 4565086 (1986-01-01), Orr, Jr.
patent: 4887464 (1989-12-01), Tannenbaum et al.
patent: 5355967 (1994-10-01), Mueller
patent: 5586609 (1996-12-01), Schuh
patent: 5720356 (1998-02-01), Gardes
patent: 5865261 (1999-02-01), Cooper
patent: 5873420 (1999-02-01), Gearhart
patent: 6065550 (2000-05-01), Gardes
patent: 6352129 (2002-03-01), Best
patent: 6374925 (2002-04-01), Elkins et al.
patent: 6415877 (2002-07-01), Fincher et al.
patent: 6457540 (2002-10-01), Gardes
patent: 6527062 (2003-03-01), Elkins et al.
patent: 6607042 (2003-08-01), Hoyer
patent: 6904981 (2005-06-01), van Riet
patent: 6920942 (2005-07-01), Koederitz
patent: 7037408 (2006-05-01), Wilborn et al.
patent: 7044239 (2006-05-01), Pinckard et al.
patent: 7134489 (2006-11-01), Van Riet
patent: 7185719 (2007-03-01), van Riet
patent: 2002/0007968 (2002-01-01), Gardes
patent: 2002/0011333 (2002-01-01), Ward
patent: 2002/0066571 (2002-06-01), Schubert et al.
patent: 2002/0108783 (2002-08-01), Elkins et al.
patent: 2002/0112888 (2002-08-01), Leuchtenberg
patent: 2003/0024737 (2003-02-01), Chang et al.
patent: 2003/0079912 (2003-05-01), Leuchtenberg
patent: 2003/0168258 (2003-09-01), Koederitz
patent: 2003/0196804 (2003-10-01), Riet
patent: 2004/0065440 (2004-04-01), Farabee et al.
patent: 2004/0144565 (2004-07-01), Koederitz
patent: 2004/0178003 (2004-09-01), Riet
patent: 2004/0238180 (2004-12-01), McGee
patent: 2006/0086538 (2006-04-01), Riet
patent: WO2005/017308 (2005-02-01), None
UK Search Report in Connection With Foreign Application Corresponding to the Above Identified US Patent Application.
Uk Patent Application, No. 2323870, Oct. 7, 1998.
PCT Published Application No. WO 99/49172, Sep. 30, 1999.
PCT Published Application No. WO 00/75477, Dec. 14, 2000.
PCT Published Application No. WO 00/4269, Jan. 27, 2000.
PCT Published Application No. WO 99/42696, Aug. 26, 1999.
Graham Robert
Kinder Joe
Gay Jennifer H
Merek & Blackmon & Voorhees, LLC
Stephenson Daniel P
Weatherford Canada Partnership
LandOfFree
Method of dynamically controlling open hole pressure in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of dynamically controlling open hole pressure in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of dynamically controlling open hole pressure in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4009670