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US 2014/0174759 A1Published application
Downhole Tool Centralizing Pistons
AssigneeSchlumberger Technology Corporation
InventorEdward Harrigan
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to setting pistons designed to centralize downhole tools within a wellbore. In one embodiment, a downhole tool includes a probe extendable to engage a wall of a wellbore and a setting piston extendable towards the wall of the wellbore. A roller is coupled to the setting piston and designed to roll circumferentially along the wall to pivot the downhole tool within the wellbore.
Claims20
A downhole tool comprising:
- a probe extendable to engage a wall of a wellbore;
- a setting piston extendable towards the wall of the wellbore;
- and
- a roller coupled to the setting piston and configured to roll circumferentially along the wall to pivot the downhole tool within the wellbore.
1 more element
A method for centralizing a downhole tool comprising:
- extending a probe of the downhole tool to engage a wall of a wellbore;
- extending a setting piston of the downhole tool such that a roller coupled to the setting piston engages the wall;
- and
- rolling the roller circumferentially along the wall to pivot the downhole tool within the wellbore.
1 more element
A downhole tool comprising:
- a probe extendable from a housing of the downhole tool to engage a wall of a wellbore;
- a setting piston extendable from the housing at a location radially opposite the probe;
- and
- a roller coupled to the setting piston and configured to roll circumferentially along the wall to pivot the downhole tool within the wellbore.
1 more element
Dependencies are inferred from the claim text.