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US 8,739,891 B2Granted
Stroker device
AssigneeAker Well Service AS
InventorsKarl Einar Ferkingstad, Arne Motland, Rune Bjørndal
Life of this patent
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Abstract
A stroker device for use in a borehole in the ground includes an actuator arranged for displacing a tool in a longitudinal direction of the borehole, and grippers arranged to anchor the stroker to the wall of the borehole, alternatively to a pipe wall, wherein the stroker is provided with driving wheels or driving belts for propulsion.
Claims2
A stroker device for use in a borehole located in the ground, said stroker device comprising:
- an actuator having a actuator being arranged to displace a tool in a longitudinal direction of the borehole;
- a gripper module with grippers being forced to a wall of the borehole or pipe wall to prevent displacement of the stroker device;
- a propulsive module having a first and a second set of driving wheels being mutually rotated approximately 90 degrees about the longitudinal axis of the stroker device for driving the stroker device to an operation location;
- a hydraulic module for commonly supplying hydraulic pressure fluid to the actuator, the grippers and the propulsive module;
- a control module for commonly controlling at least the grippers and the propulsive module simultaneously;
- and
- a power module for commonly supplying power to at least the grippers and the propulsive module.
4 more elements
Dependencies are inferred from the claim text.