Methods and apparatus for expanding tubulars

Wells – Processes – Placing or shifting well part

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C166S207000, C166S384000

Reexamination Certificate

active

07017669

ABSTRACT:
The present invention provides methods and apparatus for expanding a first, smaller diameter tubular into frictional contact with a second, larger diameter tubular or wellbore. In an embodiment, annular formations formed on an inner surface of a split ring engage an outer surface of the smaller tubular. In one aspect, the smaller diameter tubular is provided with an annular recess there around, the annular recess including recessed grooves formed there around. Therefore, the split ring is disposable within the annular recess and the annular formations formed on the split ring are constructed and arranged to fit within the recessed grooves of the annular recess of the tubular. An outer surface of the split ring is provided with teeth or some other grip-enhancing material or formation. The split ring also includes a split portion permitting the ring to expand in diameter as that portion of the tubular is expanded in diameter.

REFERENCES:
patent: 341327 (1886-05-01), Fay
patent: 2670797 (1954-03-01), Armentrout
patent: 2812025 (1957-11-01), Teague et al.
patent: 2864450 (1958-12-01), Burns
patent: 3627066 (1971-12-01), Johnson
patent: 4696606 (1987-09-01), Herron
patent: 5240076 (1993-08-01), Cromar et al.
patent: 5335736 (1994-08-01), Windsor
patent: 5803176 (1998-09-01), Blizzard, Jr. et al.
patent: 6513600 (2003-02-01), Ross
patent: 6564870 (2003-05-01), Grigsby et al.
patent: 6675901 (2004-01-01), Johnson et al.
patent: 6848510 (2005-02-01), Bixenman et al.
patent: 2001/0045289 (2001-11-01), Cook et al.
patent: 0 961 007 (1999-12-01), None
patent: WO 94/18429 (1994-08-01), None
patent: WO 00/37766 (2000-06-01), None
patent: WO 02/25059 (2002-03-01), None
PCT International Search Report, International Application No. PCT/GB 03/01895, dated Aug. 29, 2003.

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

Methods and apparatus for expanding tubulars does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for expanding tubulars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for expanding tubulars will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3534995

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