Boring or penetrating the earth – Processes
Reexamination Certificate
2008-01-15
2008-01-15
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Processes
C175S107000, C175S106000
Reexamination Certificate
active
07318489
ABSTRACT:
A hydraulic motor for use in subterranean drilling operations in which a drive fluid within a first reservoir is forced through the motor by a high pressure working fluid, such as drilling mud, the drive fluid entering a second reservoir upon exiting the motor. Upon a change in valving, the drive fluid in the second reservoir is forced through the motor by the high pressure working and back into the first reservoir.
REFERENCES:
patent: 3743013 (1973-07-01), Harbonn
patent: 3901033 (1975-08-01), McAlister
patent: 3921500 (1975-11-01), Silcox
patent: 3937599 (1976-02-01), Thureau et al.
patent: 4016719 (1977-04-01), Yavnai
patent: RE29526 (1978-01-01), Jeter
patent: 4098359 (1978-07-01), Birdwell
patent: 4211291 (1980-07-01), Kellner
patent: 4462469 (1984-07-01), Brown
patent: 4483411 (1984-11-01), Mifsud
patent: 4514834 (1985-04-01), Hanson et al.
patent: 4541241 (1985-09-01), Schulze
patent: 4702343 (1987-10-01), Paulsson
patent: 4745846 (1988-05-01), Eickmann
patent: 4805727 (1989-02-01), Hardee
patent: 4845982 (1989-07-01), Gilbert
patent: 5382760 (1995-01-01), Staron
patent: 6085862 (2000-07-01), Tenghamn
patent: 6230823 (2001-05-01), Sieniawski
patent: 2001/0020218 (2001-09-01), Cosma
patent: 2002/0070368 (2002-06-01), Rountree
patent: 2003/0056990 (2003-03-01), Oglesby
patent: 2003/0116969 (2003-06-01), Skinner
patent: 2004/0245019 (2004-12-01), Hartwick
patent: 2005/0194130 (2005-09-01), Best et al.
patent: 2006/0266526 (2006-11-01), Ocalan et al.
patent: 1109034 (2001-06-01), None
patent: 82/01738 (1982-05-01), None
Best Bruno
Van Riet Egbert Jan
Andrews David
Bagnell David
Shell Oil Company
LandOfFree
Hydraulic motor arrangement and method of operating 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 Hydraulic motor arrangement and method of operating a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic motor arrangement and method of operating a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2778215