Stroke control tool for subterranean well hydraulic actuator assembly
AssigneeAgip Oil US L.L.C.
InventorTimothy Lee Dean
Life of this patent
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Abstract
A stroke control tool for controlling the position of a subterranean well hydraulically actuated double acting piston and cylinder actuator assembly. The tool includes hydraulic fluid measuring means positioned adjacent the well and is connected to the actuator by relatively inelastic hydraulic lines so that the volume of fluid communicating between the measuring means and the actuator can accurately be measured for determining the position of the actuator.
Claims15
A stroke control tool for controlling the position of a subterranean well hydraulically actuated double acting piston and cylinder actuator assembly in which the position of the piston relative to the cylinder is moved by remotely controlled first and second hydraulic lines connected to opposite sides of the piston comprising,
- hydraulic fluid measuring means positioned adjacent the well and connected to at least one of the first and second lines for receiving hydraulic fluid, and
- said measuring means connected to the piston and cylinder assembly by a relatively inelastic hydraulic line whereby the volume of fluid communicating between the measuring means and the piston and cylinder assembly can be accurately measured by the measuring means for determining the position of the piston and cylinder assembly.
Dependencies are inferred from the claim text.