Flush mounted tubular patch

Details Flush mounted tubular patch Flush mounted tubular patch

2005-11-14

2008-07-22

Thompson, Kenneth (Department: 3672)

Wells

Processes

Repairing object in well

C166S384000, C166S207000, C138S098000, C029S402090

Reexamination Certificate

active

07401647

ABSTRACT:
Casing or other well tubulars that have failed are repaired in a manner that doesn't reduce the final inside diameter and doesn't further propagate the failure. The tubular needing repair is first expanded on at least one zone above and below the damaged area. This expansion in an undamaged area arrests failure propagation when the damaged area is then expanded. After the damaged area is expanded, the patch coupled preferably with exterior seals is positioned in the expanded zone of the damaged tubular and expanded. The procedure can also be accomplished in a single trip into the well.

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patent: 7017670 (2006-03-01), Hazel et al.
patent: 2002/0145281 (2002-10-01), Metcalfe et al.
patent: 2003/0102127 (2003-06-01), Braddick

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