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US 8,555,956 B2Granted
Linear induction motor-operated downhole tool
AssigneeSchlumberger Technology Corporation
InventorsAnthony F. Veneruso, David McCalvin, Dwayne May, Fabien Cens
Life of this patent
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Abstract
A tool that is usable with a well includes a tool operator and a linear induction motor, which actuates the tool operator.
Claims25
A tool usable with a well, comprising:
- a tool operator;
- a linear induction motor to actuate the tool operator;
- and
- a controller to cause the linear induction motor to apply a first force to the tool operator to transition the tool to a predetermined state and apply a second force smaller than the first force to the tool operator to maintain the tool in the predetermined state.
1 more element
A method usable with a well, comprising:
- operating a linear induction motor to actuate an operator of a tool located downhole in the well, the operating comprising controlling the induction motor to apply a first force to the operator to transition the tool to a predetermined state and apply a second force smaller than the first force to the operator to maintain the tool in the predetermined state.
A system usable with a well, comprising:
- a valve element;
- a valve operator to transition the valve element from a first state to a second state;
- a linear induction motor to actuate the valve operator to regulate whether the valve element is in the first state or the second state;
- and
- a controller to cause the linear induction motor to apply a first force to the valve operator to transition the valve element from the first state to the second state and apply a second force smaller than the first force to the valve operator to maintain the valve element in the second state.
2 more elements
Dependencies are inferred from the claim text.