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US 6,935,429 B2Granted
Flash welding process for field joining of tubulars for expandable applications
AssigneeWeatherford/Lamb, Inc.
InventorRobert P. Badrak
Life of this patent
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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.
Claims23
A method of well completion, comprising:
- connecting an end of a first expandable tubular to an end of a second expandable tubular using a flash welding process;
- lowering the connected tubulars into a wellbore;
- and
- expanding at least a portion of the tubulars.
1 more element
A method of completing a well, comprising:
- disposing a housing around an end of a first tubular to be joined with an end of a second tubular;
- providing the housing with a non-flammable gas;
- connecting the first expandable tubular to the second expandable tubular using a flash welding process;
- and
- expanding at least a portion of the tubulars.
2 more elements
An apparatus for connecting a first expandable tubular to a second expandable tubular, comprising:
- a housing disposable around an end of the first and second tubulars;
- one or more sealing elements disposable within each of the tubulars;
- a conductive member connected to each end of the tubulars;
- and
- a translational member for moving the first tubular toward the second tubular.
2 more elements
Dependencies are inferred from the claim text.