| US 7,380,839 B2 | ||
| Sealing expandable tubing | ||
| Peter Ellington, Aberdeen (United Kingdom); Simon John Harrall, Houston, Tex. (US); Paul David Metcalfe, Banchory (United Kingdom); and Iain Cameron MacAulay, Aberdeen (United Kingdom) | ||
| Assigned to Weatherford/Lamb, Inc., Houston, Tex. (US) | ||
| Filed on Jul. 22, 2004, as Appl. No. 10/897,328. | ||
| Claims priority of application No. 0317395.2 (GB), filed on Jul. 25, 2003. | ||
| Prior Publication US 2005/0127672 A1, Jun. 16, 2005 | ||
| Int. Cl. F16L 15/00 (2006.01); F16L 13/14 (2006.01) | ||
| U.S. Cl. 285—333 [285/334; 285/355; 285/382.1; 285/382.2; 285/382.4] | 51 Claims |
| 1. Expandable tubing comprising:
first and second expandable tubulars coupled together with a gap between the tubulars in a pre expansion position; and
a seal located between radially overlapping portions of the first and second tubulars in a post expansion position in which
the gap is increased relative to the pre expansion position, wherein the seal maintains sealing between the first and second
tubulars in both pre and post expansion positions of the tubulars.
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