Wells – Processes – Placing or shifting well part
Reexamination Certificate
2006-08-15
2006-08-15
Tsay, Frank (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S207000
Reexamination Certificate
active
07090025
ABSTRACT:
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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Harrall Simon John
Haugen David
Metcalfe Paul David
Tilton Frederick T.
Patterson & Sheridan L.L.P.
Tsay Frank
Weatherford / Lamb, Inc.
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