Method and apparatus for expanding a welded connection

Details Method and apparatus for expanding a welded connection Method and apparatus for expanding a welded connection

2005-08-30

2005-08-30

Neuder, William (Department: 3672)

Wells

Processes

Assembling well part

C166S384000, C166S207000, C166S242700

Reexamination Certificate

active

06935430

ABSTRACT:
The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion. In another aspect, the present invention provides a method for expanding a non-uniform tubular. In one embodiment, the non-uniform tubular is formed by connecting two misaligned tubulars.

REFERENCES:
patent: 3565192 (1971-02-01), McLarty
patent: 3844007 (1974-10-01), Kojima
patent: 5992329 (1999-11-01), Scheuchzer et al.
patent: 6018859 (2000-02-01), Borzym et al.
patent: 6629567 (2003-10-01), Lauritzen et al.
patent: 2003/0121558 (2003-07-01), Cook et al.
patent: 2004/0045616 (2004-03-01), Cook et al.
patent: WO2004007134 (2004-01-01), None

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