Apparatus and methods for expanding tubulars in a wellbore
AssigneeWeatherford/Lamb, Inc.
InventorsNeil A. A. Simpson, David Haugen
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Abstract
The present invention relates to methods and apparatus for expanding tubulars in a wellbore. In one aspect of the invention, an expansion tool with hydraulically actuated, radially expandable members is disposed on a string of coil tubing. In another aspect of the invention the apparatus is utilized to expand a tubular lining a lateral wellbore into contact with a window of a larger tubular lining a central wellbore.
Claims13
An apparatus for expanding a tubular in a wellbore, comprising:
- a tubular run-in string to transport the apparatus into the wellbore and to provide fluid thereto;
- and
- an expander tool, disposable in the tubular, the expander tool rotatable and having a plurality of elements extendable radially therefrom, the elements extendable with the application of pressurized fluid.
An apparatus for expanding a tubular, the apparatus comprising:
- a tubular run-in string;
- a rotatable expander tool disposed on the run-in string and locatable in the tubular, the expander tool including:
- a body with at least one opening formed in a wall thereof;
- and
- at least one roller assembly disposed within the body, the assembly including at least one radially extendable roller arranged to extend from the opening with the application of a pressurized fluid to contact the inside wall of the tubular therearound;
- and
- a mud motor disposed on the run-in string and operable with the pressurized fluid for providing rotation to the expander tool.
An apparatus for expanding a tubular in a wellbore, the apparatus comprising:
- a rotatable expander tool having a body with at least one opening formed in a wall thereof and at least one roller assembly disposed within the body, the tool including at least one hydraulically actuatable, radially extendable roller arranged to contact the inside wall of the tubular therearound;
- a housing disposed above the expander tool, the housing including:
- a hydraulically actuatable slip assembly disposed therein and having slip members extendable radially from the housing to engage the wall of a tubular therearound;
- at least one pump therein for actuating the slip assembly and the expander tool;
- at least one source of pressurisable fluid in communication with the expander tool, the slip assembly and the at least one pump;
- at least one motor for operating the at least one pump and for providing rotation to the expander tool.
Dependencies are inferred from the claim text.