Pipe running tool

Boring or penetrating the earth – With magazine for successively moving unconnected – oriented...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C175S085000, C166S077510

Reexamination Certificate

active

06938709

ABSTRACT:
A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment.

REFERENCES:
patent: 3193116 (1965-07-01), Kenneday et al.
patent: 3706347 (1972-12-01), Brown
patent: 3766991 (1973-10-01), Brown
patent: 3780883 (1973-12-01), Brown
patent: 3915244 (1975-10-01), Brown
patent: 4274778 (1981-06-01), Putnam et al.
patent: 4403897 (1983-09-01), Willis
patent: 4449596 (1984-05-01), Boyadjieff
patent: 4529045 (1985-07-01), Boyadjieff et al.
patent: 4535852 (1985-08-01), Boyadjieff et al.
patent: 4570706 (1986-02-01), Pugnet
patent: 4605077 (1986-08-01), Boyadjieff
patent: 4709766 (1987-12-01), Boyadjieff
patent: 4781359 (1988-11-01), Matus
patent: 4791997 (1988-12-01), Krasnov
patent: 5036927 (1991-08-01), Willis
patent: 5107940 (1992-04-01), Berry
patent: 5785132 (1998-07-01), Richardson et al.
patent: 5839330 (1998-11-01), Stokka
patent: 6142545 (2000-11-01), Penman et al.
patent: 6276450 (2001-08-01), Seneviratne
patent: 6443241 (2002-09-01), Juhasz et al.
patent: 0285385 (1988-10-01), None
patent: 0311455 (1989-04-01), None
patent: 0525247 (1993-02-01), None
patent: WO 92/11486 (1992-07-01), None
patent: WO 93/07358 (1993-04-01), None
patent: WO 96/18799 (1996-06-01), None
patent: WO 98/11322 (1998-03-01), None
patent: WO 99/30000 (1999-06-01), None
patent: WO 00/52297 (2000-09-01), None
International Search Report relating to corresponding parent International Application No. PCT/US00/05752 dated Sep. 28, 2000.
Kamphorst et al., Casing Running Tool; SPE/IADC 52770; pp. 1-9.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pipe running tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-3421028

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.