Patent ID: 7410001
Filing Date: 2008-08-12
Classification: E21B

Abstract:
1. A method of lining a bore, said method comprising the steps of: locating a first tubular defining a first diameter within a bore; expanding the first tubular to define a second diameter; injecting cement into an annulus formed between the first tubular and a wall of the bore while at least partially excluding the cement being injected from a volume surrounding a lower portion of the first tubular; further expanding the lower portion of the first tubular to define a third diameter, wherein the cement is at least partially excluded from the lower portion at least until the lower portion of the first tubular has been expanded to define the third diameter; locating a second tubular defining a diameter less than the second diameter within the bore such that a portion of the second tubular overlaps the lower portion of the first tubular; expanding the second tubular into engagement with the lower portion of the first tubular that has the third diameter; and further expanding beyond the third diameter at least part of the second tubular overlapping the lower portion of the first tubular.