Methods and apparatus for reforming and expanding tubulars...

Details Methods and apparatus for reforming and expanding tubulars... Methods and apparatus for reforming and expanding tubulars...

E - Fixed Constructions

21

B

E21B 29/00 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2465933

The present invention provides a method and apparatus for deforming a tubular body, running the tubular body through a restriction in a wellbore, reforming the tubular body, and expanding at least a portion of the tubular body past its elastic limit. In one aspect, the present invention provides a method for forming a substantially monobore well involving deforming a tubular body, running the tubular body below a restricted inner diameter portion, reforming the tubular body, and expanding at least a portion of the tubular body past its elastic limit. The restricted inner diameter portion may comprise a casing string previously disposed within the wellbore or a casing patch. The at least the portion of the tubular body expanded past its elastic limit may be a lower portion of the tubular body. Subsequent tubular bodies may be reformed and expanded below previous tubular bodies.

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