Expander for expanding a tubular element

Details Expander for expanding a tubular element Expander for expanding a tubular element

2006-09-26

2006-09-26

Tsay, Frank S. (Department: 3672)

Wells

Expansible anchor or casing

C166S210000

Reexamination Certificate

active

07111679

ABSTRACT:
An expander for radially expanding a tubular element by axial movement of the expander through the tubular element is provided. The expander comprising an expander member having a front part of a first cross-sectional size; a rear part of a second cross-sectional size larger than the first cross-sectional size; and an intermediate part arranged between said front part; and, rear part and having a cross-sectional size varying between said first and second cross-sectional sizes. The expander member is provided with fluid supply means for supplying pressurized fluid to the inner surface of the tubular element at a location opposite the intermediate part when the expander member is arranged in the tubular element.

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